How severe is GHSA-qxxc-7mq4-mf79?

GHSA-qxxc-7mq4-mf79 has a CVSS score of 5.5/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-qxxc-7mq4-mf79?

GHSA-qxxc-7mq4-mf79 affects the following packages: com.fasterxml.util:java-merge-sort (Maven). Ecosystems affected: Maven.

How do I fix GHSA-qxxc-7mq4-mf79?

Update com.fasterxml.util:java-merge-sort to 1.1.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-qxxc-7mq4-mf79 is resolved across your whole dependency graph.

How do I detect GHSA-qxxc-7mq4-mf79 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.fasterxml.util:java-merge-sort. 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-qxxc-7mq4-mf79 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-qxxc-7mq4-mf79?

O3 pinpoints whether GHSA-qxxc-7mq4-mf79 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-qxxc-7mq4-mf79 actively exploited in the wild?

No public exploit code has been indexed for GHSA-qxxc-7mq4-mf79 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 GHSA-qxxc-7mq4-mf79?

GHSA-qxxc-7mq4-mf79 has an EPSS (Exploit Prediction Scoring System) score of 0.2%, placing it in the 15th 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 indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is GHSA-qxxc-7mq4-mf79?

GHSA-qxxc-7mq4-mf79 is classified as CWE-377 (CWE-377), CWE-668 (CWE-668). These weakness types describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-qxxc-7mq4-mf79 published, and has it been updated?

GHSA-qxxc-7mq4-mf79 was published on January 12, 2023 and was last updated on November 8, 2023. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

GHSA-qxxc-7mq4-mf79: Java Merge-sort Insecure Temporary File vu…

EPSS Exploitation Probability

via FIRST.org ↗

0.2%probability of exploitation in next 30 days

Lower Risk15th percentile+0.17%

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

☕com.fasterxml.util:java-merge-sort

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

Versions of the package com.fasterxml.util:java-merge-sort before 1.1.0 are vulnerable to Insecure Temporary File in the StdTempFileProvider() function in StdTempFileProvider.java, which uses the permissive File.createTempFile() function, exposing temporary file contents.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`com.fasterxml.util:java-merge-sort`	all versions	1.1.0

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.fasterxml.util:java-merge-sort. 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 com.fasterxml.util:java-merge-sort to 1.1.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-qxxc-7mq4-mf79 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-qxxc-7mq4-mf79 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-qxxc-7mq4-mf79. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Versions of the package `com.fasterxml.util:java-merge-sort` before 1.1.0 are vulnerable to Insecure Temporary File in the `StdTempFileProvider()` function in `StdTempFileProvider.java`, which uses the permissive `File.createTempFile()` function, exposing temporary file contents.

O3 Security · Impact-Aware SCA

Is GHSA-qxxc-7mq4-mf79 in your dependencies?

O3 detects GHSA-qxxc-7mq4-mf79 across Maven 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

GHSA-qxxc-7mq4-mf79