What is CVE-2026-33440?

CVE-2026-33440 is a medium-severity vulnerability in Weblate, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.0/10. Published 2026-04-15.

How severe is CVE-2026-33440?

Medium severity. CVSS v3 base score is 5.0 out of 10.

SSRF in Weblate

CVE-2026-33440

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.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2026-04-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (21.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Weblate
Weblateorg Weblate — versions < 5.17

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

github.com/WeblateOrg/weblate/security/advisories/GHSA-5fhx-9jwj-867m (Third Party Advisory)
github.com/WeblateOrg/weblate/commit/8be80625a864c8db5854503872a65e8a0b7399a6 (Patch)

Frequently asked questions

What is CVE-2026-33440?: CVE-2026-33440 is a medium-severity vulnerability in Weblate, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.0/10. Published 2026-04-15.
How severe is CVE-2026-33440?: Medium severity. CVSS v3 base score is 5.0 out of 10.