# CVE-2010-1871: Red Hat Linux JBoss Seam 2 Remote Code Execution Vulnerability

Source: https://junglewise.ai/threats/cve-2010-1871-red-hat-linux-jboss-seam-2-remote-code-execution-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-12-10. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2010-1871 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2021-12-10

JBoss Seam 2 fails to properly sanitize inputs for JBoss Expression Language (EL) expressions, allowing remote attackers to execute arbitrary code via a crafted URL. This vulnerability is specifically exploitable when the Java Security Manager is not properly configured.

Vendors: [Red Hat](https://junglewise.ai/threats/vendors/red-hat).

## Quick answers

**Is CVE-2010-1871 exploited in the wild?** Yes. CVE-2010-1871 is known to be exploited in the wild, first recorded on 10 December 2021. Treat it as urgent.

**How severe is CVE-2010-1871?** Critical severity, with a CVSS score of 8.8, published 10 December 2021.

**Which products and versions are affected?** Red Hat JBoss Seam 2 (jboss-seam2) 2.x; Red Hat JBoss Enterprise Application Platform 4.3.0.

**Is there a fix for CVE-2010-1871?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2010-1871 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2010-1871?** Check whether you run Red Hat JBoss Seam 2. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Red Hat JBoss Seam 2 (jboss-seam2) 2.x
- Red Hat JBoss Enterprise Application Platform 4.3.0

## Timeline

- 2010-07-26: advisory: Original Red Hat Security Advisory (RHSA-2010-0564) date based on CVE year and vendor links
- 2021-12-10: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2021-12-10: disclosed: NVD publication date