Security Advisory
CVE-2026-15432
N/A
UNKNOWN
Vulnerability Description
When verifying a mac with a ChunkedMacVerification object, Tink compares the resulting tag with non constant time comparison. This potentially allows an attacker to use timinig information as a side channel in order to get information how many bytes of a given tag match the correct tag. This in turn could allow to find a correct tag bytewise.
Published Date
July 21, 2026
Official Source
NIST NVD Advisory