CVE-2026-33440 json
Weblate: Authenticated SSRF via redirect bypass of ALLOWED_ASSET_DOMAINS in screenshot URL uploads
published 2026-04-15 6 mo ago modified 2026-10-26 13 d ago also EUVD-2026-23002 , GHSA-5fhx-9jwj-867m , PYSEC-2026-2312
- cvss
- 5.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 15%
- public exploits
- 0
- none known
Summary
Weblate is a web based localization tool. In versions prior to 5.17, the ALLOWED_ASSET_DOMAINS setting applied only to the first issued requests and didn't restrict possible redirects. This issue has been fixed in version 5.17.
Patch / fix
- pypi weblate 5.17
- weblate weblate 5.17
- github.com/WeblateOrg/weblate@8be8062 commit
- github.com/WeblateOrg/weblate#18550 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 6 mo ago
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N |
| GitHub | 3.1 | 5.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N |
| OSV | 3.1 | 5.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | weblate | <5.17 |
5.17 |
Affected products
- WeblateOrg weblate
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/WeblateOrg/weblate/commit/8be80625a864c8db5854503872a65e8a0b7399a6
web, patch
-
github.com
/WeblateOrg/weblate/pull/18550
web
-
github.com
/WeblateOrg/weblate/security/advisories/GHSA-5fhx-9jwj-867m
web, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-33440
advisory
-
github.com
/WeblateOrg/weblate
package
Sources
- CVE List CVE-2026-33440
- GitHub Advisory GHSA-5fhx-9jwj-867m
- NVD CVE-2026-33440
- OSV PYSEC-2026-2312
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.