CVE-2025-68934

MEDIUM

6.5

Descricao

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, authenticated users can submit crafted payloads to /drafts.json that cause O(n^2) processing in Base62.decode, tying up workers for 35-60 seconds per request. This affects all users as the shared worker pool becomes exhausted. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. Lowering the max_draft_length site setting reduces attack surface but does not fully mitigate the issue, as payloads under the limit can still trigger the slow code path.

Detalhes CVE

Pontuacao CVSS v3.16.5

SeveridadeMEDIUM

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosLOW

Interacao do usuarioNONE

Publicado1/28/2026

Ultima modificacao1/30/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

discourse:discourse

Fraquezas (CWE)

CWE-770

Referencias

https://github.com/discourse/discourse/security/advisories/GHSA-vwjh-vrx9-9849(security-advisories@github.com)

Correlacoes IOC

Sem correlacoes registradas

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