How severe is CVE-2019-12402?

CVE-2019-12402 has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2019-12402?

CVE-2019-12402 affects the following packages: org.apache.commons:commons-compress (Maven), io.github.1tchy.java9modular.org.apache.commons:commons-compress (Maven). Ecosystems affected: Maven.

How do I fix CVE-2019-12402?

Update org.apache.commons:commons-compress to 1.19 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-12402 is resolved across your whole dependency graph.

How do I detect CVE-2019-12402 in my Maven dependencies?

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

How do I mitigate CVE-2019-12402 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 CVE-2019-12402?

O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2019-12402 can be triaged on real exposure rather than presence alone.

Is CVE-2019-12402 actively exploited in the wild?

No public exploit code has been indexed for CVE-2019-12402 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 CVE-2019-12402?

CVE-2019-12402 has an EPSS (Exploit Prediction Scoring System) score of 16.2%, placing it in the 97th 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 warrants monitoring and prompt remediation.

What type of vulnerability is CVE-2019-12402?

CVE-2019-12402 is classified as CWE-835 (CWE-835). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2019-12402 published, and has it been updated?

CVE-2019-12402 was published on August 30, 2019 and was last updated on July 8, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

HIGH severity

CVE-2019-12402 — commons-compress

HIGH

CVE-2019-12402 is a high-severity (CVSS 7.5) CWE-835 vulnerability in org.apache.commons:commons-compress. EPSS puts its 30-day exploitation probability at 16.2% (97th percentile). A fix is available for org.apache.commons:commons-compress — see the affected versions and patch details below.

Denial of Service in Apache Commons Compress

Also known asGHSA-53x6-4x5p-rrvv

Published

Aug 30, 2019

Updated

Jul 8, 2026

Affected

2 pkgs

Patched

1 / 2

Exploits

None indexed

Exploitation data as of Sep 20, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

16.2%probability of exploitation in next 30 days

Moderate Risk0.00%

Lower risk than most CVEs97th percentile — riskier than 97% 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

CVE-2019-12402 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 377,333 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.

Real-World Exposure

2 pkgs affected

☕org.apache.commons:commons-compress☕io.github.1tchy.java9modular.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

The file name encoding algorithm used internally in Apache Commons Compress 1.15 to 1.18 can get into an infinite loop when faced with specially crafted inputs. This can lead to a denial of service attack if an attacker can choose the file names inside of an archive created by Compress.

Affected Packages

2 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.apache.commons:commons-compress`	≥ 1.15&&< 1.19	1.19`org.apache.commons:commons-compress:1.19`
☕Maven	`io.github.1tchy.java9modular.org.apache.commons:commons-compress`	all versions	No fix

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.commons:commons-compress, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.commons:commons-compress to 1.19 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-12402 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 CVE-2019-12402 can be triaged on real exposure rather than presence alone.

Tailored to CVE-2019-12402. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatImportant

This issue does not affect the versions of apache-commons-compress as shipped with Red Hat Enterprise Linux 7, and the versions of rh-java-common-apache-commons-compress and rh-maven35-apache-commons-compress as shipped with Red Hat Software Collections 3, as they used a fallback zip encoding implementation…

Product	Fixed in	Advisory
Red Hat Fuse 7.9	`apache-commons-compress`	RHSA-2021:3140

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2019-12402 in your dependencies?

O3 Security finds CVE-2019-12402 across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

Scan my dependencies How O3 SCA works