CVE-2026-15432Observable Timing Discrepancy in Tink-Java and Tink-Android ChunkedMacVerification
Updated under an hour ago ()
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It affects Google Tink-Java and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.2 HIGH (v4.0, CNA)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
- Weakness (CWE)
- CWE-208
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- NVD analysis
- Analyzed
- Record last updated
- Jul 22, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Google Tink-Java google:tink_java (from the name) | All releases before 1.21.0, including 1.21.0. | CNA record |
Google Tink-Android google:tink_android (from the name) | All releases before 1.21.0, including 1.21.0. | CNA record |
google tink_java google:tink_java | through 1.21.0 | NVD |
References
- https://github.com/tink-crypto/tink-java/issues/75patch, vendor-advisory, issue-tracking
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.