RLSA-2026:98582: Important: expat security update
Expat is a C library for parsing XML documents.
Security Fix(es):
expat: Expat: Denial of Service via quadratic complexity in attribute processing (CVE-2026-66046)
expat: Expat: XML Injection via Malformed UTF-16 Input (CVE-2026-93990)
expat: expat: Denial of Service via integer overflow in expatrealloc (CVE-2026-102633)
expat: expat: Information disclosure via heap buffer over-read in XMLParseBuffer (CVE-2026-77214)
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
rocky-linux/expat-debugsourceto a version that resolves this vulnerability.Fixed in 0:2.7.3-2.el10_3.4 - Upgrade
Upgrade
rocky-linux/expat-develto a version that resolves this vulnerability.Fixed in 0:2.7.3-2.el10_3.4 - Upgrade
Upgrade
rocky-linux/expat-debuginfoto a version that resolves this vulnerability.Fixed in 0:2.7.3-2.el10_3.4 - Upgrade
Upgrade
rocky-linux/expatto a version that resolves this vulnerability.Fixed in 0:2.7.3-2.el10_3.4
Event History
Child vulnerabilities
Contains the following vulnerabilities.
Frequently Asked Questions
Does exploitation require authentication or user interaction?
The CVSS vector indicates that no privileges and no user interaction are required. It also indicates network attack vector access.
Which Rocky Linux package variants are included in this advisory?
The advisory lists expat, expat-devel, expat-debuginfo, and expat-debugsource.