What is CVE-2026-44264?

CVE-2026-44264 is a medium-severity vulnerability in Weblate, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 4.3/10. Published 2026-05-07.

How severe is CVE-2026-44264?

Medium severity. CVSS v3 base score is 4.3 out of 10.

XSS in Weblate

CVE-2026-44264

Weblate is a web based localization tool. Prior to version 5.17.1, the Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. This issue has been patched in version 5.17.1.

Published 2026-05-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (28.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Weblate
Weblateorg Weblate — versions < 5.17.1

Weakness classification (CWE)

CWE-80 — Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

References

github.com/WeblateOrg/weblate/security/advisories/GHSA-5cmv-3rc4-7279 (Patch, Vendor Advisory)
github.com/WeblateOrg/weblate/pull/19259 (Patch, Issue Tracking)
github.com/WeblateOrg/weblate/commit/85abc9df88b7464f4c0e794aef752e45f4230f75 (Patch)
github.com/WeblateOrg/weblate/releases/tag/weblate-5.17.1 (Release Notes)

Frequently asked questions

What is CVE-2026-44264?: CVE-2026-44264 is a medium-severity vulnerability in Weblate, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 4.3/10. Published 2026-05-07.
How severe is CVE-2026-44264?: Medium severity. CVSS v3 base score is 4.3 out of 10.