🛡️ CVE-2026-21889 — weblate

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. Rated impact: confidentiality low, integrity none, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
• Attack requirements: None — no deployment-specific condition has to hold.
• Privileges required: Low — an ordinary user account is enough.
• User interaction: None — nobody has to be tricked into anything.
• Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
• Integrity impact: None.
• Availability impact: None.

Weakness class

CVE-2026-21889 is classified as CWE-284: Improper Access Control. The software does not restrict an action to the actors that should be allowed to perform it.

Affected software

CVE-2026-21889 is recorded against 1 package.

• weblate (fixed in 5.15.2)

Timeline and source

Published on 14 January 2026 and last revised on 7 July 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 (Web)
github.com (Package)

Other advisories for this package

weblate has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2025-68279 (8.0 High, published 7 Jul 2026)
• CVE-2026-50127 (published 7 Jul 2026)
• CVE-2025-49134 (2.0 Low, published 7 Jul 2026)
• CVE-2025-47951 (4.9 Medium, published 7 Jul 2026)
• CVE-2024-39303 (2.0 Low, published 7 Jul 2026)
• CVE-2025-68398 (9.5 Critical, published 29 Jun 2026)
• openSUSE-SU-2026:11051-1 (published 17 Jun 2026)
• openSUSE-SU-2026:10929-1 (published 1 Jun 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-284: Improper Access Control) in other software:

• CVE-2022-29160 (2.0 Low, published 12 Jul 2026)
• CVE-2022-45438 (published 7 Jul 2026)
• CVE-2016-0757 (published 6 Jul 2026)
• CVE-2000-1212 (published 2 Jul 2026)
• CVE-2002-0170 (8.0 High, published 2 Jul 2026)
• CVE-2022-31231 (5.9 Medium, published 22 May 2026)
• CVE-2023-24215 (9.1 Critical, published 18 May 2026)
• CVE-2023-21968 (3.7 Low, published 8 May 2026)

Details

Affected Packages

References