GHSA-6xfj-hhwh-r3c2 is a medium-severity (CVSS 5.3) Buffer Overflow vulnerability in ouch. A fix is available for ouch — see the affected versions and patch details below.
Ouch Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
Exploitation and automatability from CISA’s SSVC triage for GHSA-6xfj-hhwh-r3c2.
EPSS Exploitation Probability
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.
How urgent is this, really
GHSA-6xfj-hhwh-r3c2 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,166 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
ouchReal-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
A vulnerability was found in ouch-org ouch up to 0.3.1. It has been classified as critical. This affects the function ouch::archive::zip::convert_zip_date_time of the file zip.rs. The manipulation of the argument month leads to memory corruption. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. Upgrading to version 0.4.0 is able to address this issue. It is recommended to upgrade the affected component.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | ouch | all versions | 0.4.0cargo update -p ouch --precise 0.4.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ouch, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update ouch to 0.4.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-6xfj-hhwh-r3c2 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 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-6xfj-hhwh-r3c2 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-6xfj-hhwh-r3c2. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-6xfj-hhwh-r3c2 in your dependencies?
O3 Security finds GHSA-6xfj-hhwh-r3c2 across crates.io dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.