CVE-2026-33220
Weblate: JavaScript localization CDN add-on allows arbitrary local file read outside the repository
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Weblate: JavaScript localization CDN add-on allows arbitrary local file read outside the repository
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.
- Record
CVE-2026-33220- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N - Weakness
- CWE-22, CWE-200
- Updated
- 2026-11-02
EUVDEUVD-2026-23000
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.
- Record
EUVD-2026-23000- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-mqph-7h49-hqfm
Weblate: JavaScript localization CDN add-on allows arbitrary local file read outside the repository
Impact
The translation memory API exposed unintended endpoints, which in turn didn't do proper access control.
Patches
Workarounds
The CDN add-on is not enabled by default.
References
Thanks to @spbavarva for reporting this responsibly via GitHub.
- Record
GHSA-mqph-7h49-hqfm- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N - Weakness
- CWE-22, CWE-200
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-33220- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N - Weakness
- CWE-22, CWE-200
- Updated
- 2026-11-02
OSV
Weblate: JavaScript localization CDN add-on allows arbitrary local file read outside the repository
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.
- Record
CVE-2026-33220- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N - Weakness
- CWE-200, CWE-22
- Updated
- 2026-11-02
OSVGHSA-mqph-7h49-hqfm
Weblate: JavaScript localization CDN add-on allows arbitrary local file read outside the repository
Impact
The translation memory API exposed unintended endpoints, which in turn didn't do proper access control.
Patches
Workarounds
The CDN add-on is not enabled by default.
References
Thanks to @spbavarva for reporting this responsibly via GitHub.
- Record
GHSA-mqph-7h49-hqfm- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N - Weakness
- CWE-200, CWE-22
- Updated
- 2026-11-02
OSVPYSEC-2026-153
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.
- Record
PYSEC-2026-153- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
weblatePyPI |
before 5.17 | 5.17 |
weblatePyPI |
before 5.17, plus listed versions 1.92.02.12.102.10.1 Show 45 moreShow less2.112.122.132.13.12.142.14.12.152.162.172.17.12.182.192.19.12.22.202.32.42.52.62.72.82.93.03.0.13.13.1.13.103.10.13.10.23.10.33.113.11.13.11.23.11.33.23.2.13.2.23.33.43.53.5.13.63.6.13.73.7.1 |
5.17 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-33220 is a medium vulnerability (CVSS 6.8) in Weblate, published April 15, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 25th percentile. Fixed in weblate 5.17.
References
github.com/WeblateOrg/weblate/security/advisories/GHSA-mqph-7h49-hqfm
nvd.nist.gov/vuln/detail/CVE-2026-33220
Left out here: 113 versions. The JSON record has them.