CVE-2026-49049Active Exploitation(ollyo / helix3)

HIGHCVSS 7.5 · HIGH

Exploitation ongoing with high activity in latest observed window (5 mentions)

Immediate actions

Patch ollyo helix3 systems immediately
Assume compromise if assets are exposed
Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft

Recommended action window: Immediate (within 24h)

NVD description

The Helix3 plugin for Joomla exposes an ajax handler task, that allows unauthenticated attackers to delete arbitrary files, write arbitrary JSON files and update template parameters.

ollyo CVEs Back to dashboard

7.8/ 10 priority

Sources & remediation

Other references

https://www.joomshaper.com/

Weakness type (CWE)

CWE-284

Priority

HIGH

Exploitation

ACTIVE

PoC

YES

Patch

AVAILABLE

Momentum

RISING

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

helix3

Threat summary

Active exploitation appears in 7 classified signals
Public PoC and exploit tooling are both present
Patch or workaround signal is available
16 mentions across 10 observed days

What's happening

Active exploitation reported across 7 signals
Exploit tool or code specified in 4 signals
PoC mentioned or linked in 8 signals
Patch or workaround mentioned in 2 signals
Technical details provided in 9 signals
Disclosure: 3 classified signals
Peaked at 5 mentions on most recent observed day (2026-08-19)
16 total mentions across 10 days

Affected systems

Vendors

ollyo

Products

helix3

Deep dive

Activity timeline16 mentions / 10d

Signal classification3 categories

Active Exploitation

743.8%

PoC

637.5%

Disclosure

318.8%

Referenced assets10 URLs

By indicator

Classification over time

Date	Total	Labels

2026-06-29	2	Disclosure2
2026-07-03	1	Active Exploitation1
2026-07-04	1	Active Exploitation1
2026-07-05	1	Active Exploitation1
2026-07-08	1	Active Exploitation1
2026-07-10	2	PoC2
2026-07-21	1	Active Exploitation1
2026-07-24	1	Active Exploitation1
2026-08-14	1	Disclosure1
2026-08-19	5	Active Exploitation1PoC4

Full discourse16 posts

dbugs@ptdbugs81d
PoC
A PoC/exploit has been discovered for vulnerability CVE-2026-49049 PT ID: PT-2026-53282 Vendor: Joomla Product: Helix3 extension for Joomla (http://joomshaper.com) Description: The Helix3 plugin for Joomla exposes an ajax handler task, that allows unauthenticated attackers to delete arbitrary files, write arbitrary JSON files and update template parameters. References: • https://dbugs.ptsecurity.com/vulnerability/PT-2026-53282 • https://github.com/Dr-D25/CVE-2026-49049 #dbugs_vuln
Post summary
A PoC and exploit code for CVE-2026-49049 have been released, demonstrating unauthenticated file deletion and configuration manipulation in the Helix3 Joomla plug‑in.
0201431.1K
3.4K followersView on X
VECERT Analyzer@VECERTRadar86d
Active Exploitation
🚨 CYBER INTELLIGENCE ALERT: ANATOMY OF AUTOMATED DEFACING AND FILE UPLOADING CAMPAIGNS EXPLOIT LIFECYCLE BASED ON CVE-2026-49049 VULNERABILITY [CATEGORY: DEFENSIVE ADVISORY / ATTACK TAXONOMY / BEHAVIORAL MAPPING / SOURCE: FORENSIC INFOGRAPHIC] An educational and preventative alert is issued that breaks down the operational lifecycle employed by threat actors in global web defacement and unauthorized file upload campaigns. The analyzed ecosystem tracks the use of low-tech automation tools that exploit the referenced vulnerability CVE-2026-49049 to compromise platforms on a massive and scalable scale. 🧬 ANATOMY OF THE ATTACK: BEHAVIORAL BREAKDOWN OF THE OPERATIONAL FLOW According to the methodological flow detailed in the infographic diagram, malicious actors execute the campaign through six sequential and automated stages: Preparation: The attacker sets up a local execution environment on their terminal (e.g., via the Windows command prompt). In this phase, they prepare the necessary artifacts: a control script developed in Python (e.g., http://h.py) and the plain text file or payload that will be injected into the victims' servers (e.g., 1.txt). Target Selection: A structured target list is created in a text file (targets.txt). The script is designed to target a common path or endpoint shared by multiple architectures (such as configuration subdirectories like /target/path.json), allowing it to scan hundreds of domains without modifying the code's internal logic. Automation: The Python script performs an iterative loop (python http://h.py 1.txt). It sequentially reads each line of the target list and executes automated HTTP requests en masse to force a file upload by exploiting the validation flaw in the CVE-2026-49049 vulnerability. Script Results: The tool processes the attempts in real time and generates a status log in the console to classify the results. The workflow quickly distinguishes between failed attempts ([Failed]) and those where the web perimeter allowed the injection and returned a positive status of successful upload ([Uploaded]). Public Validation: Once the injection is confirmed, the attacker performs external visual verification by directly accessing the affected URL from a standard web browser. This confirms that the defacement marker (shell marker or defacement message) is publicly accessible on the internet. Propaganda and Attribution: Finally, to promote themselves, gain a reputation in underground forums, or exert psychological pressure, the threat actor captures screenshots of the active defacement and shares the verified links through messaging channels and applications (such as public Telegram channels). 📉 TECHNICAL IMPACT AND RISK ASSESSMENT 🛡️ Impact on Web Integrity: Unauthorized modification of content within production directories, altering the appearance, institutional trust, or messages of the legitimate website. 👤 Reputational Exposure: Public defacement erodes the trust of users, customers, and business partners in the organization's ability to safeguard its digital assets. 🛡️ RECOMMENDED CONTROLS AND DEFENSIVE MITIGATION (SOC) To neutralize the attack vector documented in the infographic, engineering teams and system administrators are urged to deploy the following preventative guidelines: 🔄 Rigorous CMS Updates: Keep the core of content management systems (CMS) and all third-party plugins or extensions strictly updated to patch the CVE-2026-49049 vulnerability. 🚫 Write Permission Restrictions: Implement least privilege policies on the web server's file system, blocking execute and write permissions on public folders (such as image directories or shared uploads). 👁️ Unusual Route Monitoring: Continuously audit perimeter traffic logs to identify concurrent scans or automated operations targeting key application endpoints or uploading unusual files. #CyberSecurity #CVE202649049 #AttackerAnatomy #Defacement #Automation #ThreatIntelligence #FileUploadVulnerability #PythonExploitation #CMSHardening #WebSecurity #InfosecAdvisory #VECERT #DefensiveControls
Post summary
The alert documents an active, global campaign that exploits CVE-2026-49049 via an automated Python script to upload files and deface websites, providing a PoC, detailed attack flow, and remediation guidance.
000522.2K
42.1K followersView on X
Directoratul Național de Securitate Cibernetică@DNSC_RO88d
Active Exploitation
🚨 ALERTĂ - Vulnerabilitate exploatată activ în Joomla (Helix3) ⚠️ CVE-2026-49049 este o vulnerabilitate de tip “Improper Access Control (CWE-284)” care afectează framework-ul Helix3 pentru Joomla. 👉 Citiți alerta: https://www.dnsc.ro/citeste/alerta-vulnerabilitate-exploatata-activ-in-joomla-helix3 #DNSC #Alert #CyberSecurity https://t.co/e3axpSO72R
Post summary
CVE‑2026‑49049, an Improper Access Control flaw in the Helix3 Joomla framework, is being actively exploited; the post offers no PoC, exploit code, or patch information.
03030396
4.7K followersView on X
pdnuclei-bot@pdnuclei_bot46d
Disclosure
🚨 CVE-2026-49049 - high 🚨 JoomShaper Helix3 <=3.1.0 - Unauthenticated Arbitrary JSON File Write > JoomShaper Helix3 template framework versions 1.0 through 3.1.0 for Joomla expose an ... 👾 https://cloud.projectdiscovery.io/library/CVE-2026-49049 @pdnuclei #NucleiTemplates ...
Post summary
CVE-2026-49049 is newly disclosed: JoomShaper Helix3 versions 1.0 through 3.1.0 for Joomla allow unauthenticated arbitrary JSON file writes; no exploitation or patch information is provided.
00021280
1.3K followersView on X
EcuCERT@EcuCERT_EC69d
Active Exploitation
Se detectó una campaña de Defacement que explota las vulnerabilidades CVE-2026-48907, CVE-2026-48908 y CVE-2026-49049 en Joomla!, dirigida a portales institucionales de Ecuador. Mas información: https://www.ecucert.gob.ec/wp-content/uploads/2026/07/Al-2026-037-Campana-de-Defacement-en-Portales-Institucionales-Basados-en-Joomla-en-Ecuador.pdf #PorUnEcuadorCiberseguro @Arcotel_ec @CsirtCEDIA @CsirtEPN https://t.co/hvVTFt35KM
Post summary
Spanish tweet reports an active defacement campaign exploiting CVE-2026-48907, CVE-2026-48908, and CVE-2026-49049 on Joomla! portals in Ecuador, linking to a detailed ICERT report.
02010295
2.0K followersView on X
VulDB 🛡@vuldb87d
Active Exploitation
Our CTI team identified a lot of activities targeting joomshaper Helix3 Extension (CVE-2026-49049) https://vuldb.com/vuln/374640/cti
Post summary
CTI reports numerous targeting activities for CVE‑2026‑49049, suggesting ongoing exploitation in the wild, though no PoC, exploit code, or technical details are shared.
01010171
2.3K followersView on X
Lyrie.ai@lyrie_ai41d
PoC
13:50 UTC: Thread live on @lyrie_ai. 0day Intel: A PoC/exploit has been discovered for vulnerability CVE-2026-49049
Post summary
A proof‑of‑concept/exploit for CVE‑2026‑49049 has reportedly been discovered, but no accompanying technical details, patches, or evidence of active exploitation are provided.
10000148
324 followersView on X
Lyrie.ai@lyrie_ai41d
Active Exploitation
16:36 UTC: First exploit attempt in the wild. 0day Intel: A PoC/exploit has been discovered for vulnerability CVE-2026-49049
Post summary
A first wild exploit attempt for CVE-2026-49049 has been reported, with a PoC discovered, indicating active exploitation activity.
10000145
324 followersView on X
Lyrie.ai@lyrie_ai41d
PoC
13:47 UTC: GPT-5 enrichment complete. 67 words. 1 citations. 0day Intel: A PoC/exploit has been discovered for vulnerability CVE-2026-49049
Post summary
A proof‑of‑concept/exploit has been discovered for CVE-2026-49049, but the snippet offers no further details, no evidence of active exploitation, and no patch or technical specifics.
1000044
324 followersView on X
Lyrie.ai@lyrie_ai41d
PoC
13:36 UTC: CVE-2026-49049 disclosed. A PoC/exploit has been discovered for vulnerability CVE-2026-49049 PT ID: PT-2026-53282 Vendor: Joomla Product: Helix3
Post summary
A PoC/exploit for CVE-2026-49049 has been disclosed, indicating the vulnerability is known, but no active exploitation, patch, or technical details are provided.
10000169
324 followersView on X
Lyrie.ai@lyrie_ai41d
PoC
13:39 UTC: Lyrie Sentinel flagged it. 0day Intel: A PoC/exploit has been discovered for vulnerability CVE-2026-49049
Post summary
A Proof of Concept/exploit for CVE-2026-49049 has been identified, but no further technical, patch, or exploitation details are provided.
1000041
324 followersView on X
ASPL hosting@ASPLhosting66d
Active Exploitation
En esta tanda cubrimos tres vectores de explotación activa: - wp2shell (CVE-2026-63030 y CVE-2026-60137, WordPress core): /wp-json/batch/v1 y parámetros REST - SP Page Builder (CVE-2026-48908): tarea asset.uploadCustomIcon - Helix3 (CVE-2026-49049): manejador AJAX com_ajax
Post summary
The post lists three CVEs with active exploitation vectors, providing technical details but no exploitation code or patches, indicating ongoing real‑world attacks.
10000145
129 followersView on X
ThreatWire@ThreatWire_81d
PoC
🚨 CVE-2026-49049: A PoC has been released for the Helix3 extension for Joomla, allowing unauthenticated attackers to delete arbitrary files, write JSON files, and modify template settings. 🔗 https://github.com/Dr-D25/CVE-2026-49049 #CyberSecurity #CVE #Joomla #ThreatWire
Post summary
A PoC demonstrating unauthenticated file deletion and configuration tampering in the Helix3 Joomla extension has been published, but the text provides no proof of active exploitation or patch availability.
00010105
69 followersView on X
CCB Alert@CCBalert83d
Active Exploitation
Warning: Critical unauthenticated file deletion vulnerability #CVE-2026-49049 (CVSS: 7.5) affecting the #Helix3 plugin for #Joomla is now #ActivelyExploited. This can lead to full site compromise. Remember to update ALL of your Joomla plugins regularly! #Patch #Patch #Patch
Post summary
The Helix3 plugin for Joomla is affected by CVE-2026-49049, a critical unauthenticated file deletion flaw that is currently being actively exploited, allowing full site compromise; users are urged to patch promptly.
01000416
7.2K followersView on X
Infoflowcloud@infoflowcloud91d
Disclosure
🚨*CVE* CVE-2026-49049 The Helix3 plugin for Joomla exposes an ajax handler task, that allows unauthenticated attackers to delete arbitrary files, write arbitrary JSON files and update temp… https://www.cve.org/CVERecord?id=CVE-2026-49049 ----- Traducción: CVE-2026-49049 El … http://infoflow.cloud`
Post summary
A new CVE (CVE-2026-49049) affecting Joomla’s Helix3 plugin is disclosed, granting unauthenticated attackers file deletion, JSON file writing, and temp updates; no PoC, exploit details, or patch are mentioned.
0001098
89 followersView on X
CVE@CVEnew91d
Disclosure
CVE-2026-49049 The Helix3 plugin for Joomla exposes an ajax handler task, that allows unauthenticated attackers to delete arbitrary files, write arbitrary JSON files and update temp… https://www.cve.org/CVERecord?id=CVE-2026-49049
Post summary
This post announces CVE-2026-49049, a flaw in Joomla's Helix3 plugin that lets unauthenticated attackers delete and modify files via an exposed AJAX handler.
00001981
57.7K followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	ollyo	helix3	-	joomla\!	-

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What researchers are saying

CVE-2026-49049

dbugs[verified]@ptdbugsPoC

A PoC and exploit code for CVE-2026-49049 have been released, demonstrating unauthenticated file deletion and configuration manipulation in the Helix3 Joomla plug‑in.

VECERT Analyzer[verified]@VECERTRadarActive Exploitation

The alert documents an active, global campaign that exploits CVE-2026-49049 via an automated Python script to upload files and deface websites, providing a PoC, detailed attack flow, and remediation guidance.

Lyrie.ai[verified]@lyrie_aiPoC

A proof‑of‑concept/exploit for CVE‑2026‑49049 has reportedly been discovered, but no accompanying technical details, patches, or evidence of active exploitation are provided.

Lyrie.ai[verified]@lyrie_aiActive Exploitation

A first wild exploit attempt for CVE-2026-49049 has been reported, with a PoC discovered, indicating active exploitation activity.

Lyrie.ai[verified]@lyrie_aiPoC

A proof‑of‑concept/exploit has been discovered for CVE-2026-49049, but the snippet offers no further details, no evidence of active exploitation, and no patch or technical specifics.

Lyrie.ai[verified]@lyrie_aiPoC

A PoC/exploit for CVE-2026-49049 has been disclosed, indicating the vulnerability is known, but no active exploitation, patch, or technical details are provided.

Lyrie.ai[verified]@lyrie_aiPoC

A Proof of Concept/exploit for CVE-2026-49049 has been identified, but no further technical, patch, or exploitation details are provided.

Directoratul Național de Securitate Cibernetică@DNSC_ROActive Exploitation

CVE‑2026‑49049, an Improper Access Control flaw in the Helix3 Joomla framework, is being actively exploited; the post offers no PoC, exploit code, or patch information.