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CVE-2026-23868

giflib: Giflib: Double-free vulnerability leading to memory corruption

Giflib contains a double-free vulnerability that is the result of a shallow copy in GifMakeSavedImage and incorrect error handling. The conditions needed to trigger this vulnerability are difficult but may be possible.

CVSS 3.1 · 5.1 Medium EPSS < 1% KEV · Not listed
Vendors
Giflib Giflib Project
Products
Giflib Giflib
CVE-2026-26740

giflib: giflib: Denial of Service via buffer overflow in EGifGCBToExtension

Buffer Overflow vulnerability in giflib v.5.2.2 allows a remote attacker to cause a denial of service via the EGifGCBToExtension overwriting an existing Graphic Control Extension block without validating its allocated size.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
Giflib Giflib Project
Products
Giflib Giflib