CVE-2026-15432

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 92% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 4 sources updated this week
8.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.2Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
8.2
EG Score
8.2(medium)
EG Risk
—
EPSS
8.4%
KEV
Not listed

Published

July 21, 2026

Last Modified

July 22, 2026

Advisory Details (1)

Auto-updated Jul 21, 2026
No patch confirmed yet.
generic

ChunkedMacVerification does non constant time comparison on Mac · Issue #75 · tink-crypto/tink-java · GitHub

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

Vendor Advisories for CVE-2026-15432(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 22× in last 7d / 22× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 23:06 UTCEG score recompute
  2. 2026-07-22 23:06 UTCGHSA enrichment
  3. 2026-07-22 14:08 UTCEPSS rescore
  4. 2026-07-21 21:17 UTCGHSA enrichment
  5. 2026-07-21 21:04 UTCGHSA enrichment
  6. 2026-07-21 21:00 UTCGHSA enrichment
  7. 2026-07-21 20:54 UTCGHSA enrichment
  8. 2026-07-21 20:52 UTCGHSA enrichment
  9. 2026-07-21 20:42 UTCGHSA enrichment
  10. 2026-07-21 20:41 UTCGHSA enrichment
  11. 2026-07-21 20:40 UTCGHSA enrichment
  12. 2026-07-21 20:38 UTCGHSA enrichment
  13. 2026-07-21 20:36 UTCGHSA enrichment
  14. 2026-07-21 20:29 UTCGHSA enrichment
  15. 2026-07-21 20:28 UTCGHSA enrichment
  16. 2026-07-21 20:12 UTCGHSA enrichment
  17. 2026-07-21 20:10 UTCGHSA enrichment
  18. 2026-07-21 20:08 UTCGHSA enrichment
  19. 2026-07-21 20:08 UTCGHSA enrichment
  20. 2026-07-21 17:19 UTCEG score recompute
  21. 2026-07-21 17:04 UTCEG score recompute
  22. 2026-07-21 17:03 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-15432?
CVE-2026-15432 is a high vulnerability published on July 21, 2026. 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…
When was CVE-2026-15432 disclosed?
CVE-2026-15432 was first published in the National Vulnerability Database on July 21, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15432 actively exploited?
CVE-2026-15432 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-15432?
CVE-2026-15432 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-15432?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15432, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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