CVE-2026-87962

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-10. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

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 v3
7.5
EG Score
7.5(high)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

September 10, 2026

Last Modified

September 10, 2026

Advisory Details (4)

Auto-updated Sep 10, 2026
No patch confirmed yet.
generic

t-digest 3.1 through 3.3 Denial of Service via Unvalidated Length Fields in MergingDigest.fromBytes | Advisories | VulnCheck

https://www.vulncheck.com/advisories/t-digest-3.1-through-3.3-denial-of-service-via-unvalidated-length-fields-in-mergingdigest-frombytes
generic

GitHub - tdunning/t-digest: A new data structure for accurate on-line accumulation of rank-based statistics such as quantiles and trimmed means · GitHub

https://github.com/tdunning/t-digest
generic

t-digest/core/src/main/java/com/tdunning/math/stats/MergingDigest.java at 7905f3d2ad18e7d7176811147d1316a3e23d7061 · tdunning/t-digest · GitHub

https://github.com/tdunning/t-digest/blob/7905f3d2ad18e7d7176811147d1316a3e23d7061/core/src/main/java/com/tdunning/math/stats/MergingDigest.java
generic

Unvalidated Length Fields Enable Crash in MergingDigest.fromBytes() · Issue #227 · tdunning/t-digest · GitHub

https://github.com/tdunning/t-digest/issues/227

Vendor Advisories for CVE-2026-87962(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 26× in last 7d / 43× 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. 2026-09-19 13:04 UTCGHSA enrichment
  2. 2026-09-19 01:14 UTCEG score recompute
  3. 2026-09-19 01:14 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 13:24 UTCGHSA enrichment
  6. 2026-09-18 01:34 UTCEG score recompute
  7. 2026-09-18 01:34 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-17 13:44 UTCGHSA enrichment
  10. 2026-09-17 01:54 UTCEG score recompute
  11. 2026-09-17 01:54 UTCGHSA enrichment
  12. 2026-09-16 14:09 UTCEPSS rescore
  13. 2026-09-16 14:04 UTCEG score recompute
  14. 2026-09-16 14:04 UTCGHSA enrichment
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-16 02:14 UTCGHSA enrichment
  17. 2026-09-15 14:24 UTCEG score recompute
  18. 2026-09-15 14:24 UTCGHSA enrichment
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 02:34 UTCGHSA enrichment
  21. 2026-09-14 14:44 UTCGHSA enrichment
  22. 2026-09-14 02:54 UTCEG score recompute
  23. 2026-09-14 02:54 UTCGHSA enrichment
  24. 2026-09-13 16:48 UTCEPSS rescore
  25. 2026-09-13 15:04 UTCGHSA enrichment
Show 18 more
  1. 2026-09-13 03:12 UTCGHSA enrichment
  2. 2026-09-12 15:21 UTCEG score recompute
  3. 2026-09-12 15:21 UTCGHSA enrichment
  4. 2026-09-12 15:02 UTCEPSS rescore
  5. 2026-09-12 03:32 UTCGHSA enrichment
  6. 2026-09-11 15:42 UTCEG score recompute
  7. 2026-09-11 15:42 UTCGHSA enrichment
  8. 2026-09-11 14:53 UTCEPSS rescore
  9. 2026-09-11 14:53 UTCEPSS rescore
  10. 2026-09-11 03:47 UTCGHSA enrichment
  11. 2026-09-10 15:57 UTCGHSA enrichment
  12. 2026-09-10 13:37 UTCEG score recompute
  13. 2026-09-10 13:37 UTCGHSA enrichment
  14. 2026-09-10 13:05 UTCEG score recompute
  15. 2026-09-10 13:05 UTCGHSA enrichment
  16. 2026-09-10 11:21 UTCEG score recompute
  17. 2026-09-10 10:56 UTCEG score recompute
  18. 2026-09-10 10:54 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-87962?
CVE-2026-87962 is a high vulnerability published on September 10, 2026. 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…
When was CVE-2026-87962 disclosed?
CVE-2026-87962 was first published in the National Vulnerability Database on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-87962 actively exploited?
CVE-2026-87962 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 63.6% of all scored CVEs.
What is the CVSS score of CVE-2026-87962?
CVE-2026-87962 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-87962?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-87962, 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

Explore the affected products and dependency analysis for CVE-2026-87962

Explore →

Is Your Infrastructure Affected by CVE-2026-87962?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs