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CISA KEV · ACTIVELY EXPLOITED
HIGH severity

CVE-2010-1871 — Red Hat

HIGH

CVE-2010-1871 is a high-severity (CVSS 8.8) Expression Language Injection vulnerability. It is in CISA's Known Exploited Vulnerabilities catalog (added 2021-12-10) — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.

JBoss Seam 2 (jboss-seam2), as used in JBoss Enterprise Application Platform 4.3.0 for Red Hat Linux, does not properly sanitize inputs for JBoss Expression Language (EL) expressions,…

Published
Updated
Affected
4 products
Patched
See advisory
Exploits
4 known
Exploitation data as of Oct 24, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

  • Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2021-12-10. Federal agencies were required to remediate by 2022-06-10.
  • A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2010-1871.

EPSS Exploitation Probability

via FIRST.org ↗
83.4%probability of exploitation in next 30 days
Very High Risk0.00%
Lower risk than most CVEs100th percentile — riskier than 100% of all scored CVEsHighest risk
80.3%85.8%91.4%96.9%93.7%83.4%Apr 26Aug 26Oct 26

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

How urgent is this, really

CVE-2010-1871 by exploitation likelihood (EPSS) against impact (CVSS). In the shaded patch-first corner (EPSS 50%+, CVSS 7.0+).

Where this sits among everything scored

Of 395,308 CVEs with a current EPSS score, this one falls in the 50–90% band (highlighted). Counts from FIRST.org, log-scaled.

Description

JBoss Seam 2 (jboss-seam2), as used in JBoss Enterprise Application Platform 4.3.0 for Red Hat Linux, does not properly sanitize inputs for JBoss Expression Language (EL) expressions, which allows remote attackers to execute arbitrary code via a crafted URL. NOTE: this is only a vulnerability when the Java Security Manager is not properly configured.

Affected Products

4 products · 4 configurations
Application
oncommand balancenetapp
all
Application
oncommand insightnetapp
all
Application
oncommand unified managernetapp
all
Application
jboss enterprise application platformredhat
1 version
4.3.0
Exploits & PoCs
4

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

EDB-36653remotejsp✓ Verified

JBoss Seam 2 - Arbitrary File Upload / Execution (Metasploit)

by Metasploit · Apr 6, 2015

Detection & mitigation playbook

Vulnerability
  1. Detect

    Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).

  2. Remediation status

    No fixed release is recorded for CVE-2010-1871 yet. Track the upstream advisory, and apply the exposure-reduction steps below in the meantime.

  3. Mitigate without a patch

    Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

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
ProductFixed inAdvisory
Red Hat JBoss Enterprise Application Platform 4.3 for RHEL 4jboss-seam2-0:2.0.2.FP-1.ep1.24.el4RHSA-2010:0564

Frequently Asked Questions

JBoss Seam 2 (jboss-seam2), as used in JBoss Enterprise Application Platform 4.3.0 for Red Hat Linux, does not properly sanitize inputs for JBoss Expression Language (EL) expressions, which allows remote attackers to execute arbitrary code via a crafted URL. NOTE: this is only a vulnerability when the Java Security Manager is not properly configured.
O3 Security · Impact-Aware SCA

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Actively Exploited: CVE-2010-1871: Red Hat (High 8.8)