Summary
[2.7.3-61]
- CVE-2026-66046 expat: Expat: Denial of Service via quadratic complexity
in attribute processing
[2.7.3-60]
- CVE-2026-93990 expat: Expat: XML Injection via Malformed UTF-16 Input
[2.7.3-59]
- Fix CVE-2026-56132: out-of-bound scaffolding index store in doProlog
[2.7.3-58]
- Fix CVE-2026-50219: forbid XML_ParserFree/Reset from handlers
[2.7.3-57]
- expat: backport CVE-2026-45186 fix (attribute collision check DoS)
[2.7.3-56]
- Rebase to 2.7.3 and add VCS tag
* Thu Jun 05 2025 psklenar@redhat.com <psklenar@redhat.com>
- https://issues.redhat.com/browse/RHELMISC-13073
* Fri Mar 28 2025 Tomas Korbar <tkorbar@redhat.com>
- Fix behavior change caused by fix for CVE-2024-8176
* Fri Mar 14 2025 Tomas Korbar <tkorbar@redhat.com>
- Fix CVE-2024-8176
* Thu Nov 07 2024 Tomas Korbar <tkorbar@redhat.com>
- Rebase to 2.6.4
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| Oracle Linux · 10 | expat | 0:2.7.3-1.el10_2.5 |
| Oracle Linux · 10 | expat-devel | 0:2.7.3-1.el10_2.5 |
Vulnerabilities 2
-
High 7.5
Expat Denial of Service via storeAtts() Quadratic Complexity
Expat through 2.8.3 contains a denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts() function in xmlparse.c, where processing N specified attributes with non-normalized values triggers an O(N^2) linear scan of elementTy…
-
High 7.5
Expat before 2.8.5 Malformed UTF-16 Acceptance via Unchecked Surrogate
Expat before 2.8.5 fails to validate that a high surrogate in UTF-16 input is followed by a low surrogate, allowing malformed UTF-16 sequences to be accepted. Attackers can supply UTF-16 encoded XML containing lone high surrogates that consume the following c…