CVE-2023-29405

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2023-06-08. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

The go command may execute arbitrary code at build time when using cgo. This may occur when running "go get" on a malicious module, or when running any other command which builds untrusted code. This is can by triggered by linker flags, specified via a "#cgo LDFLAGS" directive. Flags containing embedded spaces are mishandled, allowing disallowed flags to be smuggled through the LDFLAGS sanitization by including them in the argument of another flag. This only affects usage of the gccgo compiler.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
—
EPSS
75.0%
KEV
Not listed

Published

June 8, 2023

Last Modified

January 6, 2025

Advisory Details (7)

Auto-updated May 25, 2026
No patch confirmed yet.
generic
https://groups.google.com/g/golang-announce/c/q5135a9d924/m/j0ZoAJOHAwAJ
generic

cmd/go: improper sanitization of LDFLAGS [CVE-2023-29405] · Issue #60306 · golang/go · GitHub

https://go.dev/issue/60306
generic
https://go.dev/cl/501224
generic

Go: Multiple Vulnerabilities (GLSA 202311-09) — Gentoo security

https://security.gentoo.org/glsa/202311-09
generic

GO-2023-1842 - Go Packages

https://pkg.go.dev/vuln/GO-2023-1842
generic

[SECURITY] Fedora 38 Update: golang-1.20.6-1.fc38 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XBS3IIK6ADV24C5ULQU55QLT2UE762ZX/
generic

[SECURITY] Fedora 37 Update: golang-1.19.12-1.fc37 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NZ2O6YCO2IZMZJELQGZYR2WAUNEDLYV6/

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntugolang-1.17-src (1.17.13-3ubuntu1.2) @ jammy2026-05-24ubuntu
ubuntugolang-1.18-src (1.18.1-1ubuntu1~16.04.6+esm1) @ xenial2026-05-24ubuntu
redhatrhceph/snmp-notifier-rhel8:1.2.1-692024-06-26redhat
redhatgo-toolset-1.19-golang-0:1.19.10-1.el7_92023-06-29redhat
redhatgo-toolset:rhel8-8080020230627164522.6b4b45d82023-06-29redhat
redhatgo-toolset-0:1.19.10-1.el9_22023-06-29redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
toolchain—1.20.5—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(7)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 13× in last 7d / 47× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 105 total refreshes for this CVE.

  1. 2026-07-22 23:09 UTCEG score recompute
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-29405?
CVE-2023-29405 is a critical vulnerability published on June 8, 2023. The go command may execute arbitrary code at build time when using cgo. This may occur when running "go get" on a malicious module, or when running any other command which builds untrusted code. This is can by triggered by linker flags, specified via a "#cgo LDFLAGS" directive. Flags containing…
When was CVE-2023-29405 disclosed?
CVE-2023-29405 was first published in the National Vulnerability Database on June 8, 2023, with the most recent update on January 6, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-29405 actively exploited?
CVE-2023-29405 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 75.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-29405?
CVE-2023-29405 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-29405?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-29405, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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