CVE-2026-42609Disclosure(getgrav / grav)

LOWCVSS 8.1 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch getgrav grav systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a business logic vulnerability in the Grav Admin Panel allows a low-privileged user (with only user creation permissions) to overwrite existing accounts, including the primary administrator. By creating a new user with a username that already exists, the system updates the existing account's metadata and permissions instead of rejecting the request. This leads to a Denial of Service (DoS) on administrative functions and Privilege De-escalation of the root account. This vulnerability is fixed in 2.0.0-beta.2.

getgrav CVEs Back to dashboard

0.5/ 10 priority

Sources & remediation

Patch / fix

Exploit / PoC references

Weakness type (CWE)

CWE-269CWE-285CWE-639CWE-837

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

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

grav

Threat summary

Patch or workaround signal is available
4 mentions across 2 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 4 signals
Disclosure: 3 classified signals
Peaked 1d ago at 3 mentions (2026-05-11); latest day: 1
4 total mentions across 2 days

Affected systems

Vendors

getgrav

Products

grav

1 version affected across 1 product

Deep dive

Activity timeline4 mentions / 2d

Signal classification2 categories

Disclosure

375.0%

Patch

125.0%

Referenced assets3 URLs

By indicator

Classification over time

Date	Total	Labels

2026-05-11	3	Disclosure3
2026-05-27	1	Patch1

Full discourse4 posts

DFIR Lab@DFIR_Lab135d
Patch
🚨 HIGH SEVERITY: CVE-2026-42609 (CVSS 8.1) Grav CMS Admin Panel vulnerability allows low-priv users to overwrite admin accounts via username collision. Affects versions < 2.0.0-beta.2. Upgrade immediately. #CVE #Vulnerability #PatchNow https://t.co/X9jVZzgiGm
Post summary
The tweet alerts that CVE‑2026‑42609 allows low‑privilege users to overwrite admin accounts via username collision in Grav CMS, urging an immediate upgrade to mitigate the risk.
0000044
30 followersView on X
Vulmon Vulnerability Feed@VulmonFeeds150d
Disclosure
CVE-2026-42609 Business Logic Vulnerability in Grav Admin Panel Allows Account Overwrite https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-42609
Post summary
The post reports a Business Logic vulnerability (CVE‑2026‑42609) in Grav’s admin panel that permits account overwrite, with details hosted on Vulmon.
0000047
4.0K followersView on X
Infoflowcloud@infoflowcloud151d
Disclosure
🚨*CVE* CVE-2026-42609 Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a business logic vulnerability in the Grav Admin Panel allows a low-privileged user (with only user creation… https://www.cve.org/CVERecord?id=CVE-2026-42609 ----- Traducción: CVE-2026-42609 Gra… http://infoflow.cloud`
Post summary
The post announces CVE‑2026‑42609, describing a business logic flaw in Grav’s Admin Panel that lets low‑privileged users create accounts. No PoC, exploit, or patch information is provided.
0000025
77 followersView on X
CVE@CVEnew151d
Disclosure
CVE-2026-42609 Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a business logic vulnerability in the Grav Admin Panel allows a low-privileged user (with only user creation… https://www.cve.org/CVERecord?id=CVE-2026-42609
Post summary
The snippet reports a business‑logic flaw (CVE‑2026‑42609) in Grav’s Admin Panel that permits low‑privileged users with user‑creation rights to exploit older versions (prior to 2.0.0‑beta.2); it provides limited technical details but no PoC, exploit, or patch information.
00000106
57.5K followersView on X

CPE platform detail2 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

2 of 2 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	getgrav	grav	-	-	-
App	getgrav	grav	2.0.0	-	-

Explore more

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What researchers are saying

CVE-2026-42609

DFIR Lab[verified]@DFIR_LabPatch

The tweet alerts that CVE‑2026‑42609 allows low‑privilege users to overwrite admin accounts via username collision in Grav CMS, urging an immediate upgrade to mitigate the risk.

Vulmon Vulnerability Feed@VulmonFeedsDisclosure

The post reports a Business Logic vulnerability (CVE‑2026‑42609) in Grav’s admin panel that permits account overwrite, with details hosted on Vulmon.

Infoflowcloud@infoflowcloudDisclosure

The post announces CVE‑2026‑42609, describing a business logic flaw in Grav’s Admin Panel that lets low‑privileged users create accounts. No PoC, exploit, or patch information is provided.

CVE@CVEnewDisclosure

The snippet reports a business‑logic flaw (CVE‑2026‑42609) in Grav’s Admin Panel that permits low‑privileged users with user‑creation rights to exploit older versions (prior to 2.0.0‑beta.2); it provides limited technical details but no PoC, exploit, or patch information.