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    CVE-2023-39320

    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.

    Published:Sep 6, 2023
    Last Modified:Feb 13, 2025
    EPS:Sep 8, 2023
    EPSS Score:0.0059
    CVSS Score:9.8

    Affected Products

    Vendor
    Golang
    Product
    Go

    Exploits

    https://github.com/ayrustogaru/cve-2023-39320

    Related CVEs

    CVE-2026-39820 (CVSS 7.5) — Well-crafted inputs reaching ParseAddress, ParseAddressList, and ParseDate were able to trigger excessive CPU …
    CVE-2026-42501 (CVSS 7.5) — A malicious module proxy can exploit a flaw in the go command's validation of module checksums to bypass check…
    CVE-2026-39823 (CVSS 6.1) — CVE-2026-27142 fixed a vulnerability in which URLs were not correctly escaped inside of a <meta> tag's <conten…
    CVE-2026-33811 (CVSS 7.5) — When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C me…
    CVE-2026-39826 (CVSS 6.1) — If a trusted template author were to write a <script> tag containing an empty 'type' attribute or a 'type' att…
    CVE-2026-39817 (CVSS 5.9) — The "go tool pack" subcommand (usually used only by the compiler as an internal tool with known-good inputs) d…
    CVE-2026-39819 (CVSS 5.3) — The "go bug" command writes to two files with predictable names in the system temporary directory (for example…
    CVE-2026-42499 (CVSS 7.5) — Pathological inputs could cause DoS through consumePhrase when parsing an email address according to RFC 5322.…
    CVE-2026-39825 (CVSS 5.3) — ReverseProxy can forward queries containing parameters not visible to Rewrite functions. When used with a Rewr…
    CVE-2026-39836 (CVSS 7.5) — The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High