CVE-2026-33220 Weblate: JavaScript localization CDN add-on allows arbitrary local file read outside the repository
Attackers can read arbitrary local files outside the repository via the translation memory API if the CDN add-on is enabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-33220?
CVE-2026-33220 is a medium-severity path traversal vulnerability in WeblateOrg weblate, published on 15 Apr 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Weblate is a web based localization tool. In versions prior to 5.17, the translation memory API exposed unintended endpoints, which in turn didn't perform proper access control. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can disable this feature as the CDN add-on is not enabled by default.
Which versions are affected by CVE-2026-33220?
3 open source packages ship an affected version, including weblate and Weblate. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
weblate PyPI | All versions | 5.17 |
weblate PyPI | All versions | 5.17 |
Weblate PyPI | All versions | 5.17 |
Products include Weblate Weblate.
How do I fix CVE-2026-33220?
Upgrade weblate to 5.17 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-33220 being exploited?
There is no known exploitation of CVE-2026-33220 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-mqph-7h49-hqfm, PYSEC-2026-153.