CVE-2026-39826

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 ImpactpartialSuccessful exploitation gives limited 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

0.37% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 30.1% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. 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

2026-05-07 19:41Z4 MO AGO

Last updated

2026-05-08 14:05Z3 MO AGO

Reserved

2026-04-07

Assigning CNA

Go

Record state

PUBLISHED

Severity

Medium (CVSS 6.1)

CNA CVSS vector

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

Weaknesses

• CWE-116Improper Encoding or Escaping of OutputClass
• CWE-1289Improper Validation of Unsafe Equivalence in InputBase

Data version

5.2

Document digest

b0199f51a3a26da7d036aa2b5d1db25aa87e7372787e4c76338abeaf0d43704f

• go.devhttps://go.dev/issue/78981
• go.devhttps://go.dev/cl/771180
• groups.google.comhttps://groups.google.com/g/golang-announce/c/qcCIEXso47M
• pkg.go.devhttps://pkg.go.dev/vuln/GO-2026-4980