libexpat: libexpat: Use-after-free vulnerability due to improper handling of XML CDATA sections
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| libexpat project | libexpat | unaffected |
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No data.
| Vendor | Product | Versions | ||||||||
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| Libexpat Project | Libexpat |
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| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-4765-1 | expat security update |
Debian DSA |
DSA-6404-1 | expat security update |
Ubuntu USN |
USN-8790-1 | Expat vulnerabilities |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.194% probability within 30 days)
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| References |
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| Title | Use-After-Free Vulnerability in libexpat Due to Missing Depth Tracking | libexpat: libexpat: Use-after-free vulnerability due to improper handling of XML CDATA sections |
| Weaknesses | CWE-825 | |
| References |
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| Metrics |
threat_severity
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threat_severity
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ssvc
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| Title | Use-After-Free Vulnerability in libexpat Due to Missing Depth Tracking |
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| 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. | |
| First Time appeared |
Libexpat Project
Libexpat Project libexpat |
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| Weaknesses | CWE-416 | |
| CPEs | cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Libexpat Project
Libexpat Project libexpat |
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| References |
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| Metrics |
cvssV3_1
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