CVE-2026-27457
Weblate: Missing access control for the AddonViewSet API exposes all addon configurations
Weblate is a web based localization tool. Prior to version 5.16.1, the REST API's AddonViewSet (weblate/api/views.py, line 2831) uses queryset = Addon.objects.all() without overriding get_queryset() to scope results by user permissions. This allows any authenticated user (or anonymous users if REQUIRE_LOGIN is not set) to list and retrieve ALL addons across all projects and components via GET /api/addons/ and GET /api/addons/{id}/. Version 5.16.1 fixes the issue.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Weblate: Missing access control for the AddonViewSet API exposes all addon configurations
Weblate is a web based localization tool. Prior to version 5.16.1, the REST API's AddonViewSet (weblate/api/views.py, line 2831) uses queryset = Addon.objects.all() without overriding get_queryset() to scope results by user permissions. This allows any authenticated user (or anonymous users if REQUIRE_LOGIN is not set) to list and retrieve ALL addons across all projects and components via GET /api/addons/ and GET /api/addons/{id}/. Version 5.16.1 fixes the issue.
- Record
CVE-2026-27457- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-862, CWE-200
- Updated
- 2026-11-02
EUVDEUVD-2026-8897
Weblate is a web based localization tool. Prior to version 5.16.1, the REST API's AddonViewSet (weblate/api/views.py, line 2831) uses queryset = Addon.objects.all() without overriding get_queryset() to scope results by user permissions. This allows any authenticated user (or anonymous users if REQUIRE_LOGIN is not set) to list and retrieve ALL addons across all projects and components via GET /api/addons/ and GET /api/addons/{id}/. Version 5.16.1 fixes the issue.
- Record
EUVD-2026-8897- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-wppc-7cq7-cgfv
Weblate: Missing access control for the AddonViewSet API exposes all addon configurations
Impact
Users were able to obtain add-on configuration via API.
Patches
References
Weblate thanks @lighthousekeeper1212 for responsible disclosure.
- Record
GHSA-wppc-7cq7-cgfv- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-200, CWE-862
- Updated
- 2026-11-02
NVD
Weblate is a web based localization tool. Prior to version 5.16.1, the REST API's AddonViewSet (weblate/api/views.py, line 2831) uses queryset = Addon.objects.all() without overriding get_queryset() to scope results by user permissions. This allows any authenticated user (or anonymous users if REQUIRE_LOGIN is not set) to list and retrieve ALL addons across all projects and components via GET /api/addons/ and GET /api/addons/{id}/. Version 5.16.1 fixes the issue.
- Record
CVE-2026-27457- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-200, CWE-862
- Updated
- 2026-11-02
OSV
Weblate: Missing access control for the AddonViewSet API exposes all addon configurations
Weblate is a web based localization tool. Prior to version 5.16.1, the REST API's AddonViewSet (weblate/api/views.py, line 2831) uses queryset = Addon.objects.all() without overriding get_queryset() to scope results by user permissions. This allows any authenticated user (or anonymous users if REQUIRE_LOGIN is not set) to list and retrieve ALL addons across all projects and components via GET /api/addons/ and GET /api/addons/{id}/. Version 5.16.1 fixes the issue.
- Record
CVE-2026-27457- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-200, CWE-862
- Updated
- 2026-11-02
OSVGHSA-wppc-7cq7-cgfv
Weblate: Missing access control for the AddonViewSet API exposes all addon configurations
Impact
Users were able to obtain add-on configuration via API.
Patches
References
Weblate thanks @lighthousekeeper1212 for responsible disclosure.
- Record
GHSA-wppc-7cq7-cgfv- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-200, CWE-862
- Updated
- 2026-11-02
OSVPYSEC-2026-2310
Weblate is a web based localization tool. Prior to version 5.16.1, the REST API's AddonViewSet (weblate/api/views.py, line 2831) uses queryset = Addon.objects.all() without overriding get_queryset() to scope results by user permissions. This allows any authenticated user (or anonymous users if REQUIRE_LOGIN is not set) to list and retrieve ALL addons across all projects and components via GET /api/addons/ and GET /api/addons/{id}/. Version 5.16.1 fixes the issue.
- Record
PYSEC-2026-2310- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVopenSUSE-SU-2026:10309-1 No score
weblate-5.16.1-1.1 on GA media
These are all security issues fixed in the weblate-5.16.1-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:10309-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
weblatePyPI |
before 5.16.1 | 5.16.1 |
weblatePyPI |
before 5.16.1, 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 |
5.16.1 |
weblateopenSUSE:Tumbleweed |
before 5.16.1-1.1 | 5.16.1-1.1 |
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-2026-27457 is a medium vulnerability (CVSS 4.3) in Weblate, published February 26, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.35%, the 28th percentile. Fixed in weblate 5.16.1.
References
github.com/WeblateOrg/weblate/security/advisories/GHSA-wppc-7cq7-cgfv
Left out here: 111 versions. The JSON record has them.