CVE-2026-56865

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.12% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 2.1% of scored records. A rank, not a probability.

NVD base score

8.4 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-09-03.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-08-13 21:58Z2 MO AGO

Last updated

2026-08-14 15:34Z2 MO AGO

Reserved

2026-06-23

Assigning CNA

Go

Record state

PUBLISHED

Severity

High (CVSS 8.4)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

• CWE-347Improper Verification of Cryptographic SignatureBase

Data version

5.2

Document digest

8fe9366036f26ae5a45e308ad6777488b2e3d5f2cd8ae9366be527c697e5b82b

• go.devhttps://go.dev/issue/80744
• groups.google.comhttps://groups.google.com/g/golang-announce/c/94pEornpRlI
• go.devhttps://go.dev/cl/814960
• go.devhttps://go.dev/cl/815020
• pkg.go.devhttps://pkg.go.dev/vuln/GO-2026-6179