CVE-2026-56412

CVSS Score & Metrics

Base Score

4.9 / 10

Vector String

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

Vulnerability Description

libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS in doCdataSection and thus lacks handler call depth tracking for various calls from within handlers in cases of a policy violation. Thus, a use-after-free can occur. NOTE: this issue exists because of an incomplete fix for CVE-2026-50219.

Vulnerability Details

Published Date

June 21, 2026

Last Modified

June 21, 2026

CWE ID

CWE-416

Source

NVD

Vendor

libexpat project

Product

libexpat

External References

https://github.com/libexpat/libexpat/pull/1278

CVSS Score & Metrics

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Vulnerability Details

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