TROYANOSYVIRUS
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CVE-2026-23961

MEDIUM
5.3

Descripcion

Mastodon is a free, open-source social network server based on ActivityPub. Mastodon allows server administrators to suspend remote users to prevent interactions. However, some logic errors allow already-known posts from such suspended users to appear in timelines if boosted. Furthermore, under certain circumstances, previously-unknown posts from suspended users can be processed. This issue allows old posts from suspended users to occasionally end up on timelines on all Mastodon versions. Additionally, on Mastodon versions from v4.5.0 to v4.5.4, v4.4.5 to v4.4.11, v4.3.13 to v4.3.17, and v4.2.26 to v4.2.29, remote suspended users can partially bypass the suspension to get new posts in. Mastodon versions v4.5.5, v4.4.12, v4.3.18 are patched.

Detalles CVE

Puntuacion CVSS v3.15.3
SeveridadMEDIUM
Vector CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Vector de ataqueNETWORK
ComplejidadLOW
Privilegios requeridosNONE
Interaccion usuarioNONE
Publicado1/22/2026
Ultima modificacion2/2/2026
Fuentenvd
Avistamientos honeypot0

Productos afectados

joinmastodon:mastodon

Debilidades (CWE)

CWE-863

Referencias

https://github.com/mastodon/mastodon/releases/tag/v4.3.18(security-advisories@github.com)
https://github.com/mastodon/mastodon/releases/tag/v4.4.12(security-advisories@github.com)
https://github.com/mastodon/mastodon/releases/tag/v4.5.5(security-advisories@github.com)
https://github.com/mastodon/mastodon/security/advisories/GHSA-5h2f-wg8j-xqwp(security-advisories@github.com)

Correlaciones IOC

Sin correlaciones registradas

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