Vulnerability in Google Tink-Android
CVE-2026-15432
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.
EPSS: 0.002 (10.2th percentile) — read the EPSS interpretation.
Affected products
- Google Tink-android — versions All releases before 1.21.0, including 1.21.0.
- Google Tink-java — versions All releases before 1.21.0, including 1.21.0.