CVE-2026-23535 | wlc Path traversal: Unsanitized API slugs in download command

wlc is a Weblate command-line client using Weblate's REST API. Prior to 1.17.2, the multi-translation download could write to an arbitrary location when instructed by a crafted server. This vulnerability is fixed in 1.17.2.

Published: 2026-01-16 Last update: 2026-02-18 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-23535 is rated Low Risk (35.2/100): CVSS High severity, with low exploitation likelihood (EPSS 0.03%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-23535

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-01-17 — 0.03% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-23535

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.0 3.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.3 6.0 [email protected]

Weakness enumeration for CVE-2026-23535

GitHub Security Advisory for CVE-2026-23535

GHSA-mmwx-79f6-67jg · Severity: high · Ecosystem: pip — Weblate wlc path traversal vulnerability: Unsanitized API slugs in download command

OS Trackers for CVE-2026-23535

vendor priority summary link
debian not yet assigned CVE-2026-23535 not yet assigned priority: Debian including 1 source packages (wlc), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2. https://security-tracker.debian.org/tracker/CVE-2026-23535
ubuntu medium CVE-2026-23535 medium priority: Ubuntu including 1 source packages (wlc), 6 status rows across 6 suites (bionic, focal, jammy, noble, questing, upstream): needs-triage 6. https://ubuntu.com/security/CVE-2026-23535

Affected software / configurations for CVE-2026-23535

Vendor Product Version Raw CPE
weblate wlc < 1.17.2 cpe:2.3:a:weblate:wlc:*:*:*:*:*:*:*:*

References for CVE-2026-23535

cvelogic Threat Intelligence