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Not in CISA KEV
HIGH severity

GHSA-5vwc-r48g-wj6c abomonation

HIGH

GHSA-5vwc-r48g-wj6c is a high-severity (CVSS 7.5) CWE-668 vulnerability in abomonation. No vendor fix is recorded yet; mitigation options are listed below.

Abomonation transmutes &T to and from &[u8] without sufficient constraints

Also known asCVE-2021-45708GHSA-hfxp-p695-629xRUSTSEC-2021-0120
Published
Jan 6, 2022
Updated
Nov 8, 2023
Affected
1 pkg
Patched
None yet
Exploits
None indexed
Exploitation data as of Sep 18, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.0%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs60th percentile — riskier than 60% of all scored CVEsHighest risk

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-5vwc-r48g-wj6c 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

1 pkg affected
🦀abomonation

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

An issue was discovered in the abomonation crate through version 0.7.3 for Rust. Because transmute operations are insufficiently constrained, there can be an information leak or ASLR bypass.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
🦀crates.ioabomonationall versionsNo fix

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for abomonation, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    No patched version of abomonation has shipped for GHSA-5vwc-r48g-wj6c yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

  3. Mitigate without a patch

    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 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-5vwc-r48g-wj6c can be triaged on real exposure rather than presence alone.

Tailored to GHSA-5vwc-r48g-wj6c. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

An issue was discovered in the abomonation crate through version 0.7.3 for Rust. Because transmute operations are insufficiently constrained, there can be an information leak or ASLR bypass.
O3 Security · Impact-Aware SCA

Is GHSA-5vwc-r48g-wj6c in your dependencies?

O3 Security finds GHSA-5vwc-r48g-wj6c across crates.io dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

GHSA-5vwc-r48g-wj6c: High 7.5 severity | O3 Security