CVE Watch11 sept 2026

CVE-2026-45057

matrix-sdk-ui provides GUI-centric utilities on top of matrix-rust-sdk. The message edit validation logic in the `matrix-sdk-ui` crate prio

CVSS

4.9

Medio

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 11 sept 2026 · Última mod.: 11 sept 2026 · CWE-345

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

matrix-sdk-ui provides GUI-centric utilities on top of matrix-rust-sdk. The message edit validation logic in the `matrix-sdk-ui` crate prior to 0.17.0 is missing a check: when replacing an encrypted event, the replacement event itself is not required to be encrypted. This enables a malicious homeserver administrators (or actors with equivalent power) to impersonate or spoof messages as if they were sent by a victim user. `matrix-sdk-ui` 0.17.0 fixes the message edit validation logic to align with the algorithm for replacement events[^1] described in the Matrix specification. No known workarounds are available.

Referencias oficiales

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