Summary
The libxml2 library is a development toolbox providing the implementation of various XML standards.
Security Fix(es):
* libxml2: mingw-libxml2: libxml2: Denial of Service via crafted XML input due to use-after-free (CVE-2026-6653)
* libxml2: libxml2: Arbitrary code execution in xmlcatalog utility via buffer overflow (CVE-2026-11979)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| Rocky Linux · 9 | libxml2 | 0:2.9.13-14.el9_8.4 |
Vulnerabilities 2
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High 7.0
libxml2: Use after free in xmlParseInternalSubset via improper entity resolution handling
Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling.
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Low 1.8
Stack-Based Buffer Overflow in libxml2
libxml2 is vulnerable to multiple stack-based buffer overflows in the xmlcatalog utility when running in --shell mode. The usershell() function processes user input using fixed-size stack buffers without proper bounds checking. By supplying an overly long inp…