How severe is GHSA-fmj5-wv96-r2ch?

No CVSS score has been assigned to GHSA-fmj5-wv96-r2ch yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-fmj5-wv96-r2ch?

GHSA-fmj5-wv96-r2ch affects the following packages: org.apache.httpcomponents:httpclient (Maven). Ecosystems affected: Maven.

How do I fix GHSA-fmj5-wv96-r2ch?

Update org.apache.httpcomponents:httpclient to 4.3.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-fmj5-wv96-r2ch is resolved across your whole dependency graph.

How do I detect GHSA-fmj5-wv96-r2ch in my Maven dependencies?

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

How do I mitigate GHSA-fmj5-wv96-r2ch 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-fmj5-wv96-r2ch?

O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-fmj5-wv96-r2ch can be triaged on real exposure rather than presence alone.

Is GHSA-fmj5-wv96-r2ch actively exploited in the wild?

No public exploit code has been indexed for GHSA-fmj5-wv96-r2ch 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-fmj5-wv96-r2ch?

GHSA-fmj5-wv96-r2ch has an EPSS (Exploit Prediction Scoring System) score of 18.8%, 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 GHSA-fmj5-wv96-r2ch?

GHSA-fmj5-wv96-r2ch is classified as CWE-399 (CWE-399). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-fmj5-wv96-r2ch published, and has it been updated?

GHSA-fmj5-wv96-r2ch was published on October 17, 2018 and was last updated on December 8, 2024. 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

GHSA-fmj5-wv96-r2ch — httpclient

GHSA-fmj5-wv96-r2ch is a CWE-399 vulnerability in org.apache.httpcomponents:httpclient. EPSS puts its 30-day exploitation probability at 18.8% (97th percentile). A fix is available for org.apache.httpcomponents:httpclient — see the affected versions and patch details below.

Denial of service vulnerability in org.apache.httpcomponents:httpclient

Also known asCVE-2015-5262

Published

Oct 17, 2018

Updated

Dec 8, 2024

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Sep 19, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

18.8%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.

Real-World Exposure

1 pkg affected

☕org.apache.httpcomponents:httpclient

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

http/conn/ssl/SSLConnectionSocketFactory.java in Apache HttpComponents HttpClient before 4.3.6 ignores the http.socket.timeout configuration setting during an SSL handshake, which allows remote attackers to cause a denial of service (HTTPS call hang) via unspecified vectors.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.apache.httpcomponents:httpclient`	all versions	4.3.6`org.apache.httpcomponents:httpclient:4.3.6`

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.httpcomponents:httpclient, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.httpcomponents:httpclient to 4.3.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-fmj5-wv96-r2ch 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-fmj5-wv96-r2ch can be triaged on real exposure rather than presence alone.

Tailored to GHSA-fmj5-wv96-r2ch. 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.

Ubuntu

USN-2769-1Ubuntu

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is GHSA-fmj5-wv96-r2ch in your dependencies?

O3 Security finds GHSA-fmj5-wv96-r2ch 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