Medium severity5.9NVD Advisory· Published Jul 21, 2026· Updated Sep 22, 2026
CVE-2026-15432
CVE-2026-15432
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.
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Affected products
2Patches
Vulnerability mechanics
References
1- github.com/tink-crypto/tink-java/issues/75nvdPatchVendor AdvisoryIssue Tracking
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