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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
tdunning t-digest unaffected
Version Status Constraints
3.1 affected ≤ 3.3

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/tdunning/t-digest cve-icon cve-icon
https://github.com/tdunning/t-digest/blob/7905f3d2ad18e7d7176811147d1316a3e23d7061/core/src/main/java/com/tdunning/math/stats/MergingDigest.java cve-icon cve-icon
https://github.com/tdunning/t-digest/issues/227 cve-icon cve-icon cve-icon
https://www.vulncheck.com/advisories/t-digest-3.1-through-3.3-denial-of-service-via-unvalidated-length-fields-in-mergingdigest-frombytes cve-icon cve-icon
History

Thu, 10 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 10 Sep 2026 11:00:00 +0000

Type Values Removed Values Added
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.
Title t-digest 3.1 through 3.3 Denial of Service via Unvalidated Length Fields in MergingDigest.fromBytes
Weaknesses CWE-1284
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-10T12:56:58.192Z

Reserved: 2026-09-09T17:35:22.800Z

Link: CVE-2026-87962

cve-icon Vulnrichment

Updated: 2026-09-10T12:56:52.524Z

cve-icon NVD

Status : Received

Published: 2026-09-10T11:17:07.763

Modified: 2026-09-10T13:20:32.920

Link: CVE-2026-87962

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses