Weblate: Authenticated SSRF via redirect bypass of ALLOWED_ASSET_DOMAINS in screenshot URL uploads
Priority LOW 22CWE-918Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-918 and the CVSS impact.
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0024 15th percentileScored 2026-11-07
Fix Fixed weblate (WeblateOrg): 5.17weblate (PyPI): 5.17
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| WeblateOrg | weblate | before 5.17 | 5.17 | Patch available | CNA |
| — | weblate (PyPI) | before 5.17 | 5.17 | Patch available | GHSA-5fhx-9jwj-867m |
- weblate VendorWeblateOrg Affected before 5.17 Fixed in 5.17 Patch available CNA
- weblate (PyPI) Vendor— Affected before 5.17 Fixed in 5.17 Patch available GHSA-5fhx-9jwj-867m
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:weblate:weblate:*:*:*:*:*:*:*:* | before 5.17 | Vulnerable | WeblateOrg |
- cpe:2.3:a:weblate:weblate:*:*:*:*:*:*:*:* Versions before 5.17 Vulnerable ·WeblateOrg
Remediation
- Fix · CNA weblate (WeblateOrg) Fixed in 5.17
- Fix · GHSA-5fhx-9jwj-867m weblate (PyPI) Fixed in 5.17 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-33440
- 2026-10-03 Alias added: GHSA-5fhx-9jwj-867m
References
Advisory 2
More WeblateOrg Weblate vulnerabilities
- TI-2025-23145 Weblate VCS credentials included in URL parameters are potentially logged and saved into browser history as plaintext CVSS 3.1HIGH 7.5
- TI-2025-38033 Weblate integration with Anubis can lead to Open Redirect via redir parameter CVSS 4.0LOW 2.1
- TI-2022-07893 Remote code execution (RCE) in Weblate CVSS 3.1HIGH 8.8
- TI-2025-41967 Weblate has git config file overwrite vulnerability that leads to remote code execution CVSS 3.1CRITICAL 9.1
- TI-2026-26679 Weblate: Privilege escalation in the user API endpoint CVSS 3.1HIGH 8.8
- TI-2026-19444 Weblate has an argument injection in management console CVSS 3.1CRITICAL 9.1
Sources
- CVE-2026-33440 · CVE Program
- CVE-2026-33440 · NVD
- FIRST EPSS
- GHSA-5fhx-9jwj-867m · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences