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GHSA-q547-gmf8-8jr7

MEDIUM

GHSA-q547-gmf8-8jr7 is a medium-severity (CVSS 5.3) CWE-347 vulnerability in github.com/russellhaering/goxmldsig. O3 Security confirms whether GHSA-q547-gmf8-8jr7 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

github.com/russellhaering/goxmldsig vulnerable to Signature Validation Bypass

Also known asCVE-2020-15216GO-2020-0050
Published
May 24, 2021
Updated
Jul 8, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

Blast Radius

1 pkg affected
🐹github.com/russellhaering/goxmldsig

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

Description

Impact

With a carefully crafted XML file, an attacker can completely bypass signature validation and pass off an altered file as a signed one.

Patches

A patch is available, all users of goxmldsig should upgrade to v1.1.0.

For more information

If you have any questions or comments about this advisory open an issue at https://github.com/russellhaering/goxmldsig

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/russellhaering/goxmldsigall versions1.1.0

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/russellhaering/goxmldsig. 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 github.com/russellhaering/goxmldsig to 1.1.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-q547-gmf8-8jr7 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-q547-gmf8-8jr7 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-q547-gmf8-8jr7. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Impact With a carefully crafted XML file, an attacker can completely bypass signature validation and pass off an altered file as a signed one. ### Patches A patch is available, all users of goxmldsig should upgrade to v1.1.0. ### For more information If you have any questions or comments about this advisory open an issue at https://github.com/russellhaering/goxmldsig
O3 Security · Impact-Aware SCA

Is GHSA-q547-gmf8-8jr7 in your dependencies?

O3 detects GHSA-q547-gmf8-8jr7 across Go dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.