wlc may leak API keys due to an insecure API key configuration

published 2026-01-12 9 mo ago modified 2026-07-07 4 mo ago also GHSA-9rp8-h4g8-8766 , PYSEC-2026-2052 , EUVD-2026-1919

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 8%
public exploits: 0; none known

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.

Patch / fix

fixed in 2 distros 2 links 2

pypi wlc 1.17.0
weblate wlc 1.17.0

debian ubuntu

wlc Debian 14 1.17.2-1

debian advisories DEBIAN-CVE-2026-22251

wlc Ubuntu 25.10 1.15-2ubuntu0.1
wlc Ubuntu Pro 18.04 LTS 0.8-1ubuntu0.1~esm1
wlc Ubuntu Pro 20.04 LTS 1.2-1ubuntu0.20.04.1~esm1
wlc Ubuntu Pro 22.04 LTS 1.2-1ubuntu0.22.04.1~esm1
wlc Ubuntu Pro 24.04 LTS 1.13-2ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2026-22251

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

github.com/WeblateOrg/wlc@aafdb50 commit
github.com/WeblateOrg/wlc#1098 pull request

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 9 mo ago (2026-01-12)

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.3	CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
OSV	3.1	5.3	CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N
GitHub	3.1	5.3	CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
pypi	wlc	<1.17.0	1.17.0

Affected products

WeblateOrg wlc

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-922 Insecure Storage of Sensitive Information

References

github.com /WeblateOrg/wlc/pull/1098
web, issue-tracking
github.com /WeblateOrg/wlc/commit/aafdb507a9e66574ade1f68c50c4fe75dbe80797
web, patch
github.com /WeblateOrg/wlc/security/advisories/GHSA-9rp8-h4g8-8766
web, vendor-advisory
nvd.nist.gov /vuln/detail/CVE-2026-22251
advisory
github.com /WeblateOrg/wlc
package
pypi.org /project/wlc
package
github.com /advisories/GHSA-9rp8-h4g8-8766
advisory

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary