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Maven

GHSA-7hfm-57qf-j43q

HIGH

GHSA-7hfm-57qf-j43q is a high-severity (CVSS 7.5) CWE-834 vulnerability in org.apache.commons:commons-compress. 3 public exploit references exist, so weaponization risk is real. O3 Security confirms whether GHSA-7hfm-57qf-j43q is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Excessive Iteration in Compress

Also known asCVE-2021-35515
Published
Aug 2, 2021
Updated
Mar 8, 2024
Affected
1 pkg
Patched
1 / 1
Exploits
3 known

EPSS Exploitation Probability

via FIRST.org ↗
11.6%probability of exploitation in next 30 days
Moderate Risk96th percentile0.00%

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
org.apache.commons:commons-compress

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

Description

When reading a specially crafted 7Z archive, the construction of the list of codecs that decompress an entry can result in an infinite loop. This could be used to mount a denial of service attack against services that use Compress' sevenz package.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
Mavenorg.apache.commons:commons-compressall versions1.21
Exploits & PoCs
3

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.commons:commons-compress. 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 org.apache.commons:commons-compress to 1.21 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-7hfm-57qf-j43q 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-7hfm-57qf-j43q 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-7hfm-57qf-j43q. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

When reading a specially crafted 7Z archive, the construction of the list of codecs that decompress an entry can result in an infinite loop. This could be used to mount a denial of service attack against services that use Compress' sevenz package.
O3 Security · Impact-Aware SCA

Is GHSA-7hfm-57qf-j43q in your dependencies?

O3 detects GHSA-7hfm-57qf-j43q across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.