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CVE-2026-42150

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

Published: May 8, 2026Updated: May 12, 2026 Sources: CVE List NVDCWE-79
NVD MITRE
5.1CVSSMEDIUM
EPSS Score
0.2%
Top 93.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

wlc 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.

CVSS Vector Breakdown

AV:NAC:HPR:HUI:RS:CC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-79

Affected Products

wlcWeblateOrg
On-prem
DevTools & CI / source-control
wlcweblate
On-prem
Enterprise Software
weblateorgoss-projectCZDevTools & CIaka weblate, wlc
weblatecommercialEnterprise Software

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/WeblateOrg/wlc/security/advisories/GHSA-gx2m-mcc2-r4p3
github.com
https://github.com/WeblateOrg/wlc/pull/1327
github.com
https://github.com/WeblateOrg/wlc/commit/0f3e58f6d7457b05d48ef40f579a172c4c8b8469
github.com
and 1 more references View all →

Timeline

Published
May 8, 2026
Last Updated
May 12, 2026

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