Description
Vvveb before 1.0.9.0 contains an authentication bypass vulnerability in generateCookie() in system/user/user.php that uses loose comparison to validate MD5 cookie hashes. Unauthenticated attackers can brute-force cookie values until the server's MD5 computation yields a 0e magic hash, then forge persistent cookies for account takeover.
Published: 2026-11-13
Score: 9.2 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 13 Nov 2026 09:45:00 +0000

Type Values Removed Values Added
Description Vvveb before 1.0.9.0 contains an authentication bypass vulnerability in generateCookie() in system/user/user.php that uses loose comparison to validate MD5 cookie hashes. Unauthenticated attackers can brute-force cookie values until the server's MD5 computation yields a 0e magic hash, then forge persistent cookies for account takeover.
Title Vvveb before 1.0.9.0 Cookie Forgery via PHP Type Juggling in generateCookie()
First Time appeared Vvveb
Vvveb vvveb
Weaknesses CWE-287
CPEs cpe:2.3:a:vvveb:vvveb:*:*:*:*:*:*:*:*
Vendors & Products Vvveb
Vvveb vvveb
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Vvveb Vvveb
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-13T09:36:03.862Z

Reserved: 2026-11-10T21:25:31.550Z

Link: CVE-2026-126377

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses