CVE-2026-21889 Weblate leaks information via screenshots
Unauthenticated attackers can access sensitive screenshots by guessing filenames due to missing access controls in Weblate.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-21889?
CVE-2026-21889 is a low-severity missing authorization vulnerability in WeblateOrg weblate, published on 14 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Weblate is a web based localization tool. Prior to 5.15.2, the screenshot images were served directly by the HTTP server without proper access control. This could allow an unauthenticated user to access screenshots after guessing their filename. This vulnerability is fixed in 5.15.2.
Weakness: CWE-284
Which versions are affected by CVE-2026-21889?
3 open source packages ship an affected version, including weblate. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
weblate PyPI | All versions | 5.15.2 |
weblate PyPI | All versions | 5.15.2 |
weblate PyPI | All versions | 5.15.2 |
Linux distribution packages (1)
weblate openSUSE:Tumbleweed | All versions | 5.16-1.1 |
Products include Weblate Weblate.
How do I fix CVE-2026-21889?
Upgrade weblate to 5.15.2 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-21889 being exploited?
There is no known exploitation of CVE-2026-21889 in the wild and no public exploit code.
Other vulnerabilities in WeblateOrg weblate
- CVE-2025-68398 Weblate has git config file overwrite vulnerability that leads to remote code execution
- CVE-2026-34393 Weblate: Privilege escalation in the user API endpoint
- CVE-2026-33435 Weblate: Remote code execution during backup restoration
- CVE-2026-34242 Weblate: Arbitrary File Read via Symlink
- CVE-2025-68279 Weblate has an arbitrary file read via symbolic links
Sources
Also known as GHSA-3g2f-4rjg-9385, PYSEC-2026-2037, openSUSE-SU-2026:10240-1.