@securitylab.github.com on Bluesky

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GitHub Security Lab

securitylab.github.com

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Proof of Concept for GHSL-2026-140 (CVE-2026-48095) in 7-Zip <= 26.00. A crafted archive shrinks a 256 MB buffer into 1 byte, overwrites a function pointer with file content, and redirects execution. Full weaponization needs an ASLR bypass. Fixed in 26.01. https://securitylab.github.com/advisories/GHSL-2026-140_7-Zip/

2026-05-27T17:22:17.973Z