t-digest 3.1 through 3.3 Denial of Service via Unvalidated Length Fields in MergingDigest.fromBytes
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Offline Knowledge Portal | Affected | No fix yet |
Not affected: 1 product
- Red Hat Fuse 7
Timeline
- 2026-10-02 Threatist record created from CVE-2026-87962
- 2026-10-03 Alias added: GHSA-p7mw-7cfx-cr67
- 2026-10-28 EPSS moved to the 50th–90th percentile
More tdunning vulnerabilities
- TI-2026-59939 t-digest 3.1 through 3.3 Denial of Service via NaN Centroid Means in MergingDigest.fromBytes CVSS 4.0HIGH 8.7
Sources
- CVE-2026-87962 · CVE Program
- CVE-2026-87962 · NVD
- FIRST EPSS
- GHSA-p7mw-7cfx-cr67 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-87962 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences