Weblate is vulnerable to XSS via crafted Markdown

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Summary

CVECVE-2026-44264
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-07 15:16:10 UTC
Updated2026-05-07 15:46:27 UTC
DescriptionWeblate 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.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS: 0.000300000 probability, percentile 0.088180000 (date 2026-05-09)

Problem Types: CWE-80 | CWE-80 CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA WeblateOrg Weblate affected < 5.17.1 Not specified

References

ReferenceSourceLinkTags
github.com/WeblateOrg/weblate/pull/19259 [email protected] github.com
github.com/WeblateOrg/weblate/security/advisories/GHSA-5cmv-3rc4-7279 [email protected] github.com
github.com/WeblateOrg/weblate/commit/85abc9df88b7464f4c0e794aef752e45f42... [email protected] github.com
github.com/WeblateOrg/weblate/releases/tag/weblate-5.17.1 [email protected] github.com
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