CVE-2026-15432

MediumCVSS 5.9/10Last modified Sep 22, 2026

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.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Jul 21, 2026
Last modified
Sep 22, 2026
NVD status
Analyzed

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CVE-2026-15432: Medium severity, CVSS 5.9 | Vulnix