wlc: print_html outputs API data without HTML escaping, enabling stored XSS

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Summary

CVECVE-2026-42150
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-08 04:16:18 UTC
Updated2026-05-08 04:16:18 UTC
Descriptionwlc is a Weblate command-line client using Weblate's REST API. Prior to version 2.0.0, the HTML output format in wlc embeds API response data into HTML without escaping, allowing cross-site scripting when the output is rendered in a browser. This issue has been patched in version 2.0.0.

Risk And Classification

Primary CVSS: v3.1 5.1 MEDIUM from [email protected]

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

Problem Types: CWE-79 | CWE-79 CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.1MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:L
3.1CNADECLARED5.1MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA WeblateOrg Wlc affected < 2.0.0 Not specified

References

ReferenceSourceLinkTags
github.com/WeblateOrg/wlc/security/advisories/GHSA-gx2m-mcc2-r4p3 [email protected] github.com
github.com/WeblateOrg/wlc/pull/1327 [email protected] github.com
github.com/WeblateOrg/wlc/commit/0f3e58f6d7457b05d48ef40f579a172c4c8b8469 [email protected] github.com
github.com/WeblateOrg/wlc/releases/tag/2.0.0 [email protected] github.com
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