{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-15432","assignerOrgId":"14ed7db2-1595-443d-9d34-6215bf890778","state":"PUBLISHED","assignerShortName":"Google","dateReserved":"2026-07-10T17:38:15.752Z","datePublished":"2026-07-21T16:42:12.113Z","dateUpdated":"2026-07-22T18:27:24.251Z"},"containers":{"cna":{"providerMetadata":{"orgId":"14ed7db2-1595-443d-9d34-6215bf890778","shortName":"Google","dateUpdated":"2026-07-21T16:42:12.113Z"},"title":"Observable Timing Discrepancy in Tink-Java and Tink-Android ChunkedMacVerification","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-208","description":"CWE-208 Observable Timing Discrepancy","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-172","descriptions":[{"lang":"en","value":"CAPEC-172 Manipulate Timing and State"}]}],"affected":[{"vendor":"Google","product":"Tink-Java","versions":[{"status":"affected","version":"All releases before 1.21.0, including 1.21.0."}],"defaultStatus":"unaffected"},{"vendor":"Google","product":"Tink-Android","versions":[{"status":"affected","version":"All releases before 1.21.0, including 1.21.0."}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"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.","supportingMedia":[{"type":"text/html","base64":false,"value":"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."}]}],"references":[{"url":"https://github.com/tink-crypto/tink-java/issues/75"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"HIGH","baseScore":8.2,"vectorString":"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"}}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-22T18:13:38.102550Z","id":"CVE-2026-15432","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-22T18:27:24.251Z"}}]}}