🛡️ CVE-2026-34393 — weblate

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-269 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Weblate: Privilege escalation in the user API endpoint

Impact

The user patching API endpoint didn't properly limit the scope of edits.

Patches

  • https://github.com/WeblateOrg/weblate/pull/18687

References

Thanks to @tikket1 and @DavidCarliez for reporting this via GitHub. We received two individual reports for this.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-34393 is classified as CWE-269: Improper Privilege Management. Privileges are assigned, dropped or restored incorrectly, leaving an actor with more access than intended.

Affected software

CVE-2026-34393 is recorded against 1 package.

  • weblate (fixed in 5.17)

Timeline and source

Published on 16 April 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from OSV.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)
github.com (Web)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-269
Public Exploit ✅ No
Source OSV
Published 2026-04-16
Updated 2026-08-12
Modified 2026-06-17

Affected Packages

Software From version Fixed in
weblate — 5.17

Similar Threats

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