CVE-2026-33435
Weblate: Remote code execution during backup restoration
Weblate is a web based localization tool. In versions prior to 5.17, the project backup didn't filter Git and Mercurial configuration files which could lead to remote code execution under certain circumstances. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can limit the scope of the vulnerability by restricting access to the project backup, as it is only accessible to users who can create projects.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Weblate: Remote code execution during backup restoration
Weblate is a web based localization tool. In versions prior to 5.17, the project backup didn't filter Git and Mercurial configuration files which could lead to remote code execution under certain circumstances. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can limit the scope of the vulnerability by restricting access to the project backup, as it is only accessible to users who can create projects.
- Record
CVE-2026-33435- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-23, CWE-94, CWE-434
- Updated
- 2026-11-02
EUVDEUVD-2026-23001
Weblate is a web based localization tool. In versions prior to 5.17, the project backup didn't filter Git and Mercurial configuration files which could lead to remote code execution under certain circumstances. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can limit the scope of the vulnerability by restricting access to the project backup, as it is only accessible to users who can create projects.
- Record
EUVD-2026-23001- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-558g-h753-6m33
Weblate: Remote code execution during backup restoration
Impact
The project backup didn't filter Git and Mercurial configuration files and this could lead to remote code execution under certain circumstances.
Patches
Workarounds
The project backup is only accessible to users who can create projects. Restricting access to this limits scope of the vulnerability.
References
This issue was reported by ggamno via HackerOne.
- Record
GHSA-558g-h753-6m33- CVSS 3.1
- 8.0 High
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-23, CWE-94, CWE-434
- Updated
- 2026-11-02
NVD
Weblate is a web based localization tool. In versions prior to 5.17, the project backup didn't filter Git and Mercurial configuration files which could lead to remote code execution under certain circumstances. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can limit the scope of the vulnerability by restricting access to the project backup, as it is only accessible to users who can create projects.
- Record
CVE-2026-33435- CVSS 3.1
- 8.0 High
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-23, CWE-94, CWE-434
- Updated
- 2026-11-02
OSV
Weblate: Remote code execution during backup restoration
Weblate is a web based localization tool. In versions prior to 5.17, the project backup didn't filter Git and Mercurial configuration files which could lead to remote code execution under certain circumstances. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can limit the scope of the vulnerability by restricting access to the project backup, as it is only accessible to users who can create projects.
- Record
CVE-2026-33435- CVSS 3.1
- 8.0 High
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-23, CWE-434, CWE-94
- Updated
- 2026-11-02
OSVGHSA-558g-h753-6m33
Weblate: Remote code execution during backup restoration
Impact
The project backup didn't filter Git and Mercurial configuration files and this could lead to remote code execution under certain circumstances.
Patches
Workarounds
The project backup is only accessible to users who can create projects. Restricting access to this limits scope of the vulnerability.
References
This issue was reported by ggamno via HackerOne.
- Record
GHSA-558g-h753-6m33- CVSS 3.1
- 8.0 High
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-23, CWE-434, CWE-94
- Updated
- 2026-11-02
OSVPYSEC-2026-154
Weblate is a web based localization tool. In versions prior to 5.17, the project backup didn't filter Git and Mercurial configuration files which could lead to remote code execution under certain circumstances. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can limit the scope of the vulnerability by restricting access to the project backup, as it is only accessible to users who can create projects.
- Record
PYSEC-2026-154- CVSS 3.1
- 8.0 High
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H - 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-2026-33435 is a high vulnerability (CVSS 8.1) in Weblate, published April 15, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.71%, the 53rd percentile. Fixed in weblate 5.17.
References
github.com/WeblateOrg/weblate/security/advisories/GHSA-558g-h753-6m33
nvd.nist.gov/vuln/detail/CVE-2026-33435
Left out here: 113 versions. The JSON record has them.