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Affected Component
Analysis
expat
Exploitable
Name
CVE-2026-45186
Description
In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input.
Published Date
Updated Date
Workaround
-
Advisories
Analysis#
Vulnerability Ratings#
2.9
CVSSv31
7.5
CVSSv31
7.5
CVSSv31
NaN
other
Others affected components#
Resolved with patches#
expat (yocto:scarthgap)
#
Title
Author
Resolve
1
Make "counting_start_element_handler" count default attrs
=?UTF-8?q?Berkay=20Eren=20=C3=9Cr=C3=BCn?= <berkay.ueruen@siemens.com>
CVE-2026-45186
2
lib: Introduce ELEMENT_TYPE.defaultAttsNames
Sebastian Pipping <sebastian@pipping.org>
CVE-2026-45186
3
tests: Make counting_start_element_handler enforce
Sebastian Pipping <sebastian@pipping.org>
CVE-2026-45186
4
lib: Extract a constant for upcoming reuse
Sebastian Pipping <sebastian@pipping.org>
CVE-2026-45186
5
tests: Define .attributes the first time around
Sebastian Pipping <sebastian@pipping.org>
CVE-2026-45186
6
lib: Leverage ELEMENT_TYPE.defaultAttsNames for attribute
Sebastian Pipping <sebastian@pipping.org>
CVE-2026-45186
7
test(attlist): Cover duplicate attribute names
=?UTF-8?q?Berkay=20Eren=20=C3=9Cr=C3=BCn?= <berkay.ueruen@siemens.com>
CVE-2026-45186