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RUSTSEC-2025-0135Published

matrix-sdk-base: Denial of service due to custom `m.room.join_rules` events

Exact source revision recorded 24 Oct 2026 13:19:54 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

osv · RUSTSEC-2025-0135

Published

The matrix-sdk-base crate is unable to handle responses that include custom m.room.join_rules values due to a serialization bug. This can be exploited to cause a denial-of-service condition, if a user is invited to a room with non-standard join rules, the crate's sync process will stall, preventing further processing for all rooms.

Source published
8 Dec 2025 12:00:00 UTC
Source modified
12 Oct 2026 18:00:07 UTC
Observed here
24 Oct 2026 13:19:54 UTC
Source terms
OSV · upstream source license applies

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · OSV · upstream source license applies. Source text is retained; field grouping and change labels are provided by ChangeIntel.

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Sources read 10 Nov 12:38 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current

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