CVE-2026-42150

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

MEDIUM
4.8
CVSS Score
Published: May 8, 2026 at 03:23 AM UTC
Updated: June 17, 2026 at 10:47 AM UTC
2 products affected across 2 vendorsWlcWlc

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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.0.0
v < 2.0.0
Affected range stops below 2.0.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

x_refsource_CONFIRMVendor Advisory
Source: cverecord
https://github.com/WeblateOrg/wlc/security/advisories/GHSA-gx2m-mcc2-r4p3
x_refsource_MISCIssue TrackingPatch
Source: cverecord
https://github.com/WeblateOrg/wlc/pull/1327
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/WeblateOrg/wlc/releases/tag/2.0.0

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79

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