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Vulnerability record · CVE-2026-87962 · published 10 September 2026

CVE-2026-87962: t-digest versions 3.1 through 3.3 contain a denial of service vulnerability in MergingDigest.fromBytes that fa…

t-digest versions 3.1 through 3.3 contain a denial of service vulnerability in MergingDigest.fromBytes that fails to validate length and capacity fields from serialized data. Attackers can supply crafted serialized digests with mismatched header fields to trigger ArrayIndexOutOfBoundsException or NegativeArraySizeException, aborting the parsing thread.

8.7 CVSS 4.0 High EPSS 0.63% · top 51.9% CWE-1284 · CWE-1284 Deferred
8.7CVSS 4.0 base score
0.63%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
10 Sep 2026Last modified by NVD

Description

t-digest versions 3.1 through 3.3 contain a denial of service vulnerability in MergingDigest.fromBytes that fails to validate length and capacity fields from serialized data. Attackers can supply crafted serialized digests with mismatched header fields to trigger ArrayIndexOutOfBoundsException or NegativeArraySizeException, aborting the parsing thread.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/tdunning/t-digest
https://github.com/tdunning/t-digest/blob/7905f3d2ad18e7d7176811147d1316a3e23d7061/core/src/main/java/com/tdunning/math/
https://github.com/tdunning/t-digest/issues/227
https://www.vulncheck.com/advisories/t-digest-3.1-through-3.3-denial-of-service-via-unvalidated-length-fields-in-merging
https://github.com/tdunning/t-digest/issues/227

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Source: NIST National Vulnerability Database (record CVE-2026-87962), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.