How severe is CVE-2014-3577?

No CVSS score has been assigned to CVE-2014-3577 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2014-3577?

CVE-2014-3577 affects the following packages: org.apache.httpcomponents:httpclient (Maven). Ecosystems affected: Maven.

How do I fix CVE-2014-3577?

Update org.apache.httpcomponents:httpclient to 4.3.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2014-3577 is resolved across your whole dependency graph.

How do I detect CVE-2014-3577 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 CVE-2014-3577 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.

Is CVE-2014-3577 actively exploited in the wild?

Yes. There are 2 known exploit references for CVE-2014-3577, including 2 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2014-3577?

CVE-2014-3577 has an EPSS (Exploit Prediction Scoring System) score of 9.2%, placing it in the 95th 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.

When was CVE-2014-3577 published, and has it been updated?

CVE-2014-3577 was published on August 21, 2014 and was last updated on April 16, 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

CVE-2014-3577 — httpclient

Fix: apache/httpcomponents-client@51cc675

CVE-2014-3577 is a security vulnerability in org.apache.httpcomponents:httpclient. 2 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for org.apache.httpcomponents:httpclient — see the affected versions and patch details below.

Improper Verification of Cryptographic Signature in org.apache.httpcomponents:httpclient

Also known asGHSA-cfh5-3ghh-wfjx

Published

Aug 21, 2014

Updated

Apr 16, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

2 known

Exploitation data as of Oct 24, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

9.2%probability of exploitation in next 30 days

Lower Risk+0.04%

Lower risk than most CVEs95th percentile — riskier than 95% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

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

org.apache.http.conn.ssl.AbstractVerifier in Apache HttpComponents HttpClient before 4.3.5 and HttpAsyncClient before 4.0.2 does not properly verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via a "CN=" string in a field in the distinguished name (DN) of a certificate, as demonstrated by the "foo,CN=www.apache.org" string in the O field.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.apache.httpcomponents:httpclient`	all versions	4.3.5`org.apache.httpcomponents:httpclient:4.3.5`

Affected Products

2 products · 2 configurations

Application

httpasyncclientapache

≥ 4.0 && ≤ 4.0.1

range

Application

httpclientapache

≥ 4.0 && ≤ 4.3.4

range

Exploits & PoCs

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

org.apache.http.conn.ssl.AbstractVerifier in Apache HttpComponents HttpC…

seclists.orgNVDJun 2021

Report on packetstormsecurity.com

packetstormsecurity.comNVDJun 2021

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 4.3.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2014-3577 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.

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

Additional information can be found in the Red Hat Knowledgebase article: https://access.redhat.com/solutions/1165533 This issue affects the versions of HttpComponents Client as shipped with Red Hat JBoss Data Grid 6 and Red Hat JBoss Data Virtualization 6; and ModeShape Client as shipped with Red Hat JBoss Data…

Product	Fixed in	Advisory
JBEWP 5 for RHEL 5	`jakarta-commons-httpclient-1:3.1-4_patch_02.ep5.el5`	RHSA-2014:1320
JBEWP 5 for RHEL 5	`apache-cxf-0:2.2.12-14.patch_09.ep5.el5`	RHSA-2014:1833
Red Hat Enterprise Linux 5	`jakarta-commons-httpclient-1:3.0-7jpp.4.el5_10`	RHSA-2014:1166
Red Hat Enterprise Linux 7	`httpcomponents-client-0:4.2.5-5.el7_0`	RHSA-2014:1146
Red Hat JBoss A-MQ 6.2	see advisory	RHSA-2016:1931
Red Hat JBoss A-MQ 6.2	see advisory	RHSA-2015:1177
Red Hat JBoss BPMS 6.0	`jakarta-commons-httpclient`	RHSA-2014:1892
Red Hat JBoss BPMS 6.0	`httpclient`	RHSA-2015:0234

Ubuntu

USN-2769-1Ubuntu

Frequently Asked Questions

O3 Security · Impact-Aware SCA

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