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Mageia 9 Expat Important Denial of Service CVE-2026-45186 Advisory

mageia
Calendar Grey June 12, 2026
Dist Mageia Esm H88
Mageia security advisory for expat revealing a denial of service issue through crafted XML input. Essential update for users.
Security update

Summary

Description: CVE-2026-45186 the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input.

References

- https://bugs.mageia.org/show_bug.cgi?id=35522

- https://www.openwall.com/lists/oss-security/2026/05/11/16

- https://blog.hartwork.org/posts/expat-2-8-1-released/

- https://github.com/libexpat/libexpat/blob/R_2_8_1/expat/Changes

- https://www.cve.org/CVERecord?id=CVE-2026-45186

Topics%20covered

Topics Covered

security advisory denial of service important expat Mageia cve-2026-45186

Resolution

SRPMS

- 9/core/expat-2.7.5-1.1.mga9

Severity
important
Lowest
Low
Medium
High
Critical

Publication date: 12 Jun 2026
URL: https://advisories.mageia.org/MGASA-2026-0204.html
Type: security
CVE: CVE-2026-45186

Topics%20covered

Topics Covered

security advisory denial of service important expat Mageia cve-2026-45186

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