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CVE-2026-87822

t-digest 3.1 through 3.3 Denial of Service via NaN Centroid Means in MergingDigest.fromBytes

CVSS 4.0 8.7 HIGHCVSS 3.1 7.5 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-87822

Published

t-digest versions 3.1 through 3.3 fail to validate centroid means during deserialization in MergingDigest.fromBytes, allowing attackers to inject NaN values that bypass validation checks. Attackers can craft malicious serialized digests containing NaN centroids that degrade sorting performance from O(n log n) to O(n squared), causing severe processing delays during merge operations.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-87822

Published

t-digest

https://repo1.maven.org/maven2/com/tdunning/t-digest/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "tdunning",
                    "product": "t-digest",
                    "collectionURL": "https://repo1.maven.org/maven2/com/tdunning/t-digest/",
                    "repo": "https://github.com/tdunning/t-digest",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:maven/com.tdunning/t-digest",
                    "versions": [
                        {
                            "version": "3.1",
                            "lessThanOrEqual": "3.3",
                            "status": "affected",
                            "versionType": "custom"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON