How severe is GHSA-h3qp-hwvr-9xcq?

GHSA-h3qp-hwvr-9xcq has a CVSS score of 8.6/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by GHSA-h3qp-hwvr-9xcq?

GHSA-h3qp-hwvr-9xcq affects the following packages: github.com/octo-sts/app (Go). Ecosystems affected: Go.

How do I fix GHSA-h3qp-hwvr-9xcq?

Update github.com/octo-sts/app to 0.5.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-h3qp-hwvr-9xcq is resolved across your whole dependency graph.

How do I detect GHSA-h3qp-hwvr-9xcq in my Go dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/octo-sts/app. 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.

How do I mitigate GHSA-h3qp-hwvr-9xcq if there is no patch (or I can't update yet)?

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.

How does O3 Security protect against GHSA-h3qp-hwvr-9xcq?

O3 pinpoints whether GHSA-h3qp-hwvr-9xcq is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is GHSA-h3qp-hwvr-9xcq actively exploited in the wild?

No public exploit code has been indexed for GHSA-h3qp-hwvr-9xcq yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-h3qp-hwvr-9xcq?

GHSA-h3qp-hwvr-9xcq has an EPSS (Exploit Prediction Scoring System) score of 0.4%, placing it in the 33th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is GHSA-h3qp-hwvr-9xcq?

GHSA-h3qp-hwvr-9xcq is classified as Server-Side Request Forgery (SSRF) (CWE-918). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was GHSA-h3qp-hwvr-9xcq published, and has it been updated?

GHSA-h3qp-hwvr-9xcq was published on June 26, 2025 and was last updated on February 4, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

GHSA-h3qp-hwvr-9xcq: app Server-Side Request Forgery (High 8.6)

EPSS Exploitation Probability

via FIRST.org ↗

0.4%probability of exploitation in next 30 days

Lower Risk33th percentile+0.13%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected

🐹github.com/octo-sts/app

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

Summary

Octo-STS versions before v0.5.3 are vulnerable to unauthenticated SSRF by abusing fields in OpenID Connect tokens. Malicious tokens were shown to trigger internal network requests which could reflect error logs with sensitive information.

Please upgrade to v0.5.3 to resolve this issue. This version includes patch sets to sanitize input and redact logging.

Many thanks to @vicevirus for reporting this issue and for assisting with remediation review.

References

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐹Go	`github.com/octo-sts/app`	all versions	0.5.3

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/octo-sts/app. 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.
Fix
Update github.com/octo-sts/app to 0.5.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-h3qp-hwvr-9xcq is resolved across your whole dependency graph.
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.
How O3 protects you
O3 pinpoints whether GHSA-h3qp-hwvr-9xcq 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-h3qp-hwvr-9xcq. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

## Summary Octo-STS versions before v0.5.3 are vulnerable to unauthenticated SSRF by abusing fields in OpenID Connect tokens. Malicious tokens were shown to trigger internal network requests which could reflect error logs with sensitive information. Please upgrade to v0.5.3 to resolve this issue. This version includes patch sets to [sanitize input](https://github.com/octo-sts/app/commit/b3976e39bd8c8c217c0670747d34a4499043da92) and [redact logging](https://github.com/octo-sts/app/commit/0f177fde54f9318e33f0bba6abaea9463a7c3afd). Many thanks to @vicevirus for reporting this issue and for a

O3 Security · Impact-Aware SCA

Is GHSA-h3qp-hwvr-9xcq in your dependencies?

O3 detects GHSA-h3qp-hwvr-9xcq across Go dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my dependencies How O3 SCA works

GHSA-h3qp-hwvr-9xcq