CVE-2021-41055

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-10-11 · updated 2026-06-17

Description

Gajim 1.2.x and 1.3.x before 1.3.3 allows remote attackers to cause a denial of service (crash) via a crafted XMPP Last Message Correction (XEP-0308) message in multi-user chat, where the message ID equals the correction ID.

Affected products

Gajim: from 1.2.0 before 1.3.3 — fixed in 1.3.3

How to fix

Upgrade to a fixed version: Gajim 1.3.3. Check the vendor advisory for mitigations.

References

https://dev.gajim.org/gajim/gajim/-/issues/10638
https://dev.gajim.org/gajim/gajim/-/tags/gajim-1.3.3
https://dev.gajim.org/gajim/gajim/-/issues/10638
https://dev.gajim.org/gajim/gajim/-/tags/gajim-1.3.3

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