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🐍 PyPI

GHSA-gx2m-mcc2-r4p3

MEDIUM

GHSA-gx2m-mcc2-r4p3 is a medium-severity (CVSS 5.1) vulnerability in wlc. O3 Security confirms whether GHSA-gx2m-mcc2-r4p3 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

wlc: print_html outputs API data without HTML escaping

Also known asCVE-2026-42150PYSEC-2026-2321
Published
Apr 24, 2026
Updated
Jul 13, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

Blast Radius

1 pkg affected
🐍wlc

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

Impact

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.

Patches

Workarounds

The only vulnerable code path is HTML output which is opt-in.

References

Weblate thanks @fg0x0 for reporting this on GitHub.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIwlcall versions2.0.0

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for wlc. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update wlc to 2.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-gx2m-mcc2-r4p3 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-gx2m-mcc2-r4p3 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-gx2m-mcc2-r4p3. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Impact 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. ### Patches * https://github.com/WeblateOrg/wlc/pull/1327 ### Workarounds The only vulnerable code path is HTML output which is opt-in. ### References Weblate thanks @fg0x0 for reporting this on GitHub.
O3 Security · Impact-Aware SCA

Is GHSA-gx2m-mcc2-r4p3 in your dependencies?

O3 detects GHSA-gx2m-mcc2-r4p3 across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.