CVE-2026-63447Disclosure(oisf / suricata)

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.5 until 8.0.6, the FTP parser in src/app-layer-ftp.c can continue allocating transactions after app-layer.protocols.ftp.max-tx is reached while processing one large chunk of FTP command data. The oversized transaction list is repeatedly processed with quadratic complexity after the too_many_transactions event, allowing crafted FTP traffic to degrade packet processing, reduce monitoring visibility, or cause denial of service. This issue is fixed in version 8.0.6.

oisf CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Patch / fix

Vendor / third-party advisories

https://github.com/OISF/suricata/security/advisories/GHSA-w394-3g33-3jg9

Other references

Weakness type (CWE)

CWE-407

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

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

suricata

Threat summary

2 mentions across 2 observed days
Momentum state: stable

What's happening

Technical details provided in 1 signal
Disclosure: 2 classified signals
Peaked 1d ago at 1 mentions (2026-09-19); latest day: 1
2 total mentions across 2 days

Affected systems

Vendors

oisf

Products

suricata

1 version affected across 1 product

Deep dive

Activity timeline2 mentions / 2d

Signal classification1 categories

Disclosure

2100.0%

Referenced assets2 URLs

By indicator

Full discourse2 posts

Hugo | DevOps | Cybersecurity 🇱🇻@HugoValters40d
Disclosure
CVE-2026-63447: Suricata FTP parser DoS, CVSS 7.5. Crafted FTP traffic causes quadratic processing that degrades packet inspection. No patch yet. Apply mitigations and watch for updates. https://www.valtersit.com/cve/CVE-2026-63447 #CVE #infosec #Suricata #Suricata #CVEALERT #CVE #infosec #Linux #XSS #valtersit #snippet #SysAdmin #cybersecurity #devsecops #devops #developer #100daysofcode #git #github #gitlab #redteam #blueteam #ethicalhacker #cybersecurityawareness #cybersecuritynews #cybersecuritytips #python #hacker #kali #ubuntu #debian #docker
Post summary
The text announces CVE-2026-63447, a Suricata FTP parser DoS with CVSS 7.5, and describes the vulnerability mechanism. It notes no patch is available and provides only general mitigation advice.
0000037
1.1K followersView on X
CVE@CVEnew45d
Disclosure
CVE-2026-63447 Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.5 until 8.0.6, the FTP parser in src/ap… https://www.cve.org/CVERecord?id=CVE-2026-63447
Post summary
The text announces CVE-2026-63447 affecting Suricata versions 8.0.5 through 8.0.6 within the FTP parser component, referencing the official CVE record without providing exploitation details, patches, or PoCs.
00000740
58.1K 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	oisf	suricata	8.0.5	-	-

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