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GHSA-mfv8-q39f-mgfg

MEDIUM

GHSA-mfv8-q39f-mgfg is a medium-severity (CVSS 5.4) Cross-site Scripting (XSS) vulnerability in invenio-communities. O3 Security confirms whether GHSA-mfv8-q39f-mgfg is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Cross-site Scripting in invenio-communities

Also known asCVE-2019-1020005PYSEC-2019-25
Published
Jul 16, 2019
Updated
Mar 13, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

Blast Radius

1 pkg affected
🐍invenio-communities

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

Cross-Site Scripting (XSS) vulnerability in Jinja templates

Impact

A Cross-Site Scripting (XSS) vulnerability was discovered in two Jinja templates in the Invenio-Communities module. The vulnerability allows a user to create a new community and include script element tags inside the description and page fields.

Patches

The problem has been patched in v1.0.0a20.

For more information

If you have any questions or comments about this advisory:

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIinvenio-communitiesall versions1.0.0a20

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for invenio-communities. 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 invenio-communities to 1.0.0a20 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-mfv8-q39f-mgfg 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-mfv8-q39f-mgfg 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-mfv8-q39f-mgfg. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

## Cross-Site Scripting (XSS) vulnerability in Jinja templates ### Impact A Cross-Site Scripting (XSS) vulnerability was discovered in two Jinja templates in the Invenio-Communities module. The vulnerability allows a user to create a new community and include script element tags inside the description and page fields. ### Patches The problem has been patched in v1.0.0a20. ### For more information If you have any questions or comments about this advisory: * Email us at [[email protected]](mailto:[email protected])
O3 Security · Impact-Aware SCA

Is GHSA-mfv8-q39f-mgfg in your dependencies?

O3 detects GHSA-mfv8-q39f-mgfg across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.