CVE-2024-23807

Name: CVE-2024-23807
Creator: NVD / NIST
Published: 2024-02-29T01:44:10.34+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.48%

Last modified Jun 17, 2026

CVE-2024-23807 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The Apache Xerces C++ XML parser on versions 3.0.0 before 3.2.5 contains a use-after-free error triggered during the scanning of external DTDs. Users are recommended to upgrade to version 3.2.5 which fixes the issue, or mitigate the issue by disabling DTD processing. This can be accomplished via the DOM using a standard parser feature, or via SAX using the XERCES_DISABLE_DTD environment variable. This issue has been disclosed before as CVE-2018-1311, but unfortunately that advisory incorrectly stated the issue would be fixed in version 3.2.3 or 3.2.4. . EPSS estimates a 1.48% chance of exploitation in the next 30 days.

Description

The Apache Xerces C++ XML parser on versions 3.0.0 before 3.2.5 contains a use-after-free error triggered during the scanning of external DTDs. Users are recommended to upgrade to version 3.2.5 which fixes the issue, or mitigate the issue by disabling DTD processing. This can be accomplished via the DOM using a standard parser feature, or via SAX using the XERCES_DISABLE_DTD environment variable. This issue has been disclosed before as CVE-2018-1311, but unfortunately that advisory incorrectly stated the issue would be fixed in version 3.2.3 or 3.2.4.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.48%

70.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Apache	Xerces-C\+\+	>= 3.0.0, < 3.2.5

References

https://github.com/apache/xerces-c/pull/54Exploit, Patch, Third Party Advisory
https://lists.apache.org/thread/c497tgn864tsbm8w0bo3f0d81s07zk9rMailing List, Patch, Vendor Advisory
https://github.com/apache/xerces-c/pull/54Exploit, Patch, Third Party Advisory
https://lists.apache.org/thread/c497tgn864tsbm8w0bo3f0d81s07zk9rMailing List, Patch, Vendor Advisory

Timeline

Published: Feb 29, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-23807?

How severe is CVE-2024-23807?

CVE-2024-23807 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.48% probability of exploitation in the next 30 days.

How do I fix CVE-2024-23807?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-23807?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST