Improper resource allocation In expat
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.
Mitigation
Update Impact
Minimal update. May introduce new vulnerabilities or breaking changes.
Ecosystem | Component | Affected version | Patched versions |
|---|---|---|---|
 alpine v3.24 | 2.8.2-r0 | ||
 rpm rhel10 | - | - | |
rpm rhel7 | - | - | |
rpm rhel8 | - | - | |
 debian 12 | 2.5.0-1+deb12u3 | ||
debian 14 | 2.8.2-1 | ||
alpine v3.21 | 2.8.2-r0 | ||
alpine v3.22 | 2.8.2-r0 | ||
alpine v3.23 | 2.8.2-r0 | ||
rpm rhel9 | - | - |
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Aliases
1. 2. 3. 4. 5. 6. 7.