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01 Record

CVE-2023-39320

Arbitrary code execution via go.mod toolchain directive in cmd/go

UnratedPUBLISHEDCNA: Go
CNA base scoreUnratedNo CNA CVSS vector
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02 Description

Arbitrary code execution via go.mod toolchain directive in cmd/go

03 Exploitation and scoring

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.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • 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
1.75% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 77.7% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
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.

04 Metadata

Published
2023-09-08 16:13Z3 YR AGO
Last updated
2025-02-13 17:02Z1 YR AGO
Reserved
2023-07-27
Assigning CNA
Go
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-94Improper Control of Generation of Code ('Code Injection')Base
Data version
5.1
Document digest
073a56cd9cc6242a948ab202021d27409ab2a9faa41b58a6cf2172d0aa10db28

05 Affected products

VendorProductVersionsPlatforms
Go toolchaincmd/go1.21.0-0 to < 1.21.1—

06 References