CVE-2025-9714
Stack overflow in libxml2
CVSS Score
6.2
EPSS Score
0.0%
EPSS Percentile
0th
Uncontrolled recursion in XPath evaluation in libxml2 up to and including version 2.9.14 allows a local attacker to cause a stack overflow via crafted expressions. XPath processing functions `xmlXPathRunEval`, `xmlXPathCtxtCompile`, and `xmlXPathEvalExpr` were resetting recursion depth to zero before making potentially recursive calls. When such functions were called recursively this could allow for uncontrolled recursion and lead to a stack overflow. These functions now preserve recursion depth across recursive calls, allowing recursion depth to be controlled.
| CWE | CWE-674 |
| Vendor | libxml2 |
| Product | libxml2 |
| Published | Sep 10, 2025 |
| Last Updated | May 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
libxml2 / libxml2
0 < 2.10.0 0 < 2.12.7+dfsg+really2.9.14-0.4ubuntu0.3 0 < 2.9.14+dfsg-1.3ubuntu3.5 0 < 2.9.13+dfsg-1ubuntu0.9 0 < 2.9.10+dfsg-5ubuntu0.20.04.10+esm2 0 < 2.9.4+dfsg1-6.1ubuntu1.9+esm5 0 < 2.9.3+dfsg1-1ubuntu0.7+esm10 0 < 2.9.1+dfsg1-3ubuntu4.13+esm9
References
Credits
🔍 Nikita Sveshnikov (Positive Technologies)