CVE-2023-39320

criticalpriority · attend · 50EPSS 0.018 · 78 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

1.76% (78th) EPSS

CVSS 9.8 · critical

Is it mine?

30 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

The go.mod toolchain directive, introduced in Go 1.21, can be leveraged to execute scripts and binaries relative to the root of the module when the "go" command was executed within the module. This applies to modules downloaded using the "go" command from the module proxy, as well as modules downloaded directly using VCS software.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.3criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94USprimaryCWE-94US

exploits (1)

Public proof-of-concept and weaponised exploit code.

ayrustogaru/cve-2023-39320ayrustogaru/cve-2023-39320PoC · poc_in_github

affected products (30)

Products and version ranges known to be affected.

Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
Gentoo Linuxall versionscert_bundDEcpe:/o:gentoo:linux:-
Golang Go <1.21.1all versionscert_bundDE
IBM Spectrum Protect Plus <10.1.16.2all versionscert_bundDE
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat OpenStack 16.2all versionscert_bundDEcpe:/a:redhat:openstack:16.2
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Splunk Splunk Enterprise <9.1.6all versionscert_bundDE
Splunk Splunk Enterprise <9.2.3all versionscert_bundDE
Splunk Splunk Enterprise <9.3.1all versionscert_bundDE
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Xerox FreeFlow Print Server v7all versionscert_bundDEcpe:/a:xerox:freeflow_print_server:v7
Xerox FreeFlow Print Server v9all versionscert_bundDEcpe:/a:xerox:freeflow_print_server:v9
IBM Spectrum Protect Plus< 10.1.16.2cert_bundDE
Splunk Splunk Enterprise< 9.1.6cert_bundDE
Splunk Splunk Enterprise< 9.2.3cert_bundDE
Splunk Splunk Enterprise< 9.3.1cert_bundDE
golang Go< 1.21.1cert_bundDE
Go toolchain cmd/go1.21.0-0 → 1.21.1enisa_euvdEU

showing 20 of 30

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2280Golang Go: Mehrere SchwachstellenDeutsch2023-09-06csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Golang Go ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen, Code auszuführen oder einen Denial of Service zu verursachen.
BIT-golang-2023-39320Arbitrary code execution via go.mod toolchain directive in cmd/go2024-03-06vendor · osvUS
The go.mod toolchain directive, introduced in Go 1.21, can be leveraged to execute scripts and binaries relative to the root of the module when the "go" command was executed within the module. This applies to modules downloaded using the "go" command from the module proxy, as well as modules downloaded directly using VCS software.
GO-2023-2042Arbitrary code execution via go.mod toolchain directive in cmd/go2023-09-07vendor · osvUS
The go.mod toolchain directive, introduced in Go 1.21, can be leveraged to execute scripts and binaries relative to the root of the module when the "go" command was executed within the module. This applies to modules downloaded using the "go" command from the module proxy, as well as modules downloaded directly using VCS software.

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv cert_bund NVD CVE.org MITRE

published 2023-09-08modified 2026-06-17

related (10,444)

Related entries.

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+10439 more

references (20)

External citations — patches, advisories, analysis.

scry

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