CVE-2023-3434: QRC Handler without Input Validation in Jami

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-07-14 · updated 2026-06-17
Weakness: CWE-20

Description

Improper Input Validation in the hyperlink interpretation in Savoir-faire Linux's Jami (version 20222284) on Windows. This allows an attacker to send a custom HTML anchor tag to pass a string value to the Windows QRC Handler through the Jami messenger.

Affected products

Savoir-faire Linux Jami: 20222284

References

https://blog.blacklanternsecurity.com/p/Jami-Local-Denial-Of-Service-and-QRC-Handler-Vulnerabilities
https://git.jami.net/savoirfairelinux/jami-client-qt/-/wikis/Changelog#nightly-january-10
https://review.jami.net/c/jami-client-qt/+/23569
https://blog.blacklanternsecurity.com/p/Jami-Local-Denial-Of-Service-and-QRC-Handler-Vulnerabilities
https://git.jami.net/savoirfairelinux/jami-client-qt/-/wikis/Changelog#nightly-january-10
https://review.jami.net/c/jami-client-qt/+/23569

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