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CVE-2026-49953

6.5 Moyenne

Publiée le 15/06/2026 à 22:16 · Modifiée le 17/06/2026 à 12:55 · Analyse NVD reportée · Source : disclosure@vulncheck.com

Description

Discuz! X5.0 releases 20260320 through 20260610 contains a CAPTCHA bypass vulnerability that allows unauthenticated remote attackers to defeat challenge controls by exploiting limited complexity and predictable character sets in generated CAPTCHA images. Attackers can train a custom optical character recognition model against collected CAPTCHA samples to reliably predict challenge text, bypassing protections on login, registration, and other functionality from automated abuse.

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Produits concernés

Scores CVSS

VersionScoreSourceVecteur
4.0 6.9 Moyenne disclosure@vulncheck.com CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
3.1 6.5 Moyenne disclosure@vulncheck.com CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Faiblesses (CWE)

Références

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