CVE-2026-15432

8.2 highEPSS 0.2%

High (8.2) in google tink java. EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

8.2 high

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

5.9 medium

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-31)
CWE: CWE-208
Published: 2026-07-21
Modified: 2026-09-22
Record from: the NVD, synced 2026-10-19

Affected

google:tink_java

References

https://github.com/tink-crypto/tink-java/issues/75

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