CVE-2026-45186
libexpat before 2.8.1 vulnerability
MSRC advisory May 19, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-45186
- Affected products
- libexpat before 2.8.1 · libexpat libexpat before 2.8.1 · libexpat
What happened
Information published.
What it means for your business
In 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. (CVE-2026-45186) was added to Microsoft’s security update guidance. Information published. PremierePC tracks MSRC advisories for Upstate SC businesses — patch or open a ticket if you need help verifying exposure.
Sources
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