What is CVE-2026-22251?

CVE-2026-22251 is a medium-severity vulnerability in Weblate Wlc, classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-01-12.

How severe is CVE-2026-22251?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Information disclosure in Weblate Wlc

CVE-2026-22251

wlc is a Weblate command-line client using Weblate's REST API. Prior to 1.17.0, wlc supported providing unscoped API keys in the setting. This practice was discouraged for years, but the code was never removed. This might cause the API key to be leaked to different servers.

Vulnerability class: Information Disclosure

Published 2026-01-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (9.1th percentile), scored 2026-09-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Weblate Wlc
Weblateorg Wlc — versions < 1.17.0

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

github.com/WeblateOrg/wlc/security/advisories/GHSA-9rp8-h4g8-8766 (Vendor Advisory)
github.com/WeblateOrg/wlc/pull/1098 (Issue Tracking)
github.com/WeblateOrg/wlc/commit/aafdb507a9e66574ade1f68c50c4fe75dbe80797 (Patch)

Frequently asked questions

What is CVE-2026-22251?: CVE-2026-22251 is a medium-severity vulnerability in Weblate Wlc, classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-01-12.
How severe is CVE-2026-22251?: Medium severity. CVSS v3 base score is 5.3 out of 10.