How severe is GHSA-xcf7-rvmh-g6q4?

GHSA-xcf7-rvmh-g6q4 has a CVSS score of 4.5/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-xcf7-rvmh-g6q4?

GHSA-xcf7-rvmh-g6q4 affects the following packages: openssl (crates.io). Ecosystems affected: crates.io.

How do I fix GHSA-xcf7-rvmh-g6q4?

Update openssl to 0.10.55 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xcf7-rvmh-g6q4 is resolved across your whole dependency graph.

How do I detect GHSA-xcf7-rvmh-g6q4 in my crates.io dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for openssl. 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-xcf7-rvmh-g6q4 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-xcf7-rvmh-g6q4?

O3 pinpoints whether GHSA-xcf7-rvmh-g6q4 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-xcf7-rvmh-g6q4 actively exploited in the wild?

No public exploit code has been indexed for GHSA-xcf7-rvmh-g6q4 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 type of vulnerability is GHSA-xcf7-rvmh-g6q4?

GHSA-xcf7-rvmh-g6q4 is classified as CWE-126 (CWE-126). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-xcf7-rvmh-g6q4 published, and has it been updated?

GHSA-xcf7-rvmh-g6q4 was published on June 21, 2023 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.

🦀 crates.io

GHSA-xcf7-rvmh-g6q4

MEDIUMFix: sfackler/rust-openssl#1968

GHSA-xcf7-rvmh-g6q4 is a medium-severity (CVSS 4.5) CWE-126 vulnerability in openssl. O3 Security confirms whether GHSA-xcf7-rvmh-g6q4 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

`openssl` `X509VerifyParamRef::set_host` buffer over-read

Also known asCVE-2023-53159RUSTSEC-2023-0044

Published

Jun 21, 2023

Updated

Feb 4, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Real-World Exposure

1 pkg affected

🦀openssl

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

Description

When this function was passed an empty string, openssl would attempt to call strlen on it, reading arbitrary memory until it reached a NUL byte.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🦀crates.io	`openssl`	≥ 0.10.0&&< 0.10.55	0.10.55

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for openssl. 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 openssl to 0.10.55 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xcf7-rvmh-g6q4 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-xcf7-rvmh-g6q4 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-xcf7-rvmh-g6q4. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

When this function was passed an empty string, `openssl` would attempt to call `strlen` on it, reading arbitrary memory until it reached a NUL byte.

O3 Security · Impact-Aware SCA

Is GHSA-xcf7-rvmh-g6q4 in your dependencies?

O3 detects GHSA-xcf7-rvmh-g6q4 across crates.io 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