{"answers":{"affected":"2 open source packages ship an affected version, including golang and toolchain. It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-39320 in the wild and no public exploit code.","fix":"Upgrade golang to 1.21.1 or later.","what":"CVE-2023-39320 is a critical code injection vulnerability in Golang Go, published on 8 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-39320 and fix it if it is affected.\n\nWhat it is: CVE-2023-39320 is a critical code injection vulnerability in Golang Go, published on 8 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-39320 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- golang (Bitnami): affected from 1.21.0; fixed in 1.21.1\n- toolchain (Go): affected from 1.21.0-0; fixed in 1.21.1\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2023-39320/ (Markdown: https://insights.sbomify.com/CVE-2023-39320/index.md)","id":"CVE-2023-39320","markdown":"https://insights.sbomify.com/CVE-2023-39320/index.md","name":"CVE-2023-39320","record":{"aliases":["BELL-CVE-2023-39320","BIT-golang-2023-39320","GHSA-rxv8-v965-v333","GO-2023-2042"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Go toolchain","requires_auth":"none","summary":"Attackers can execute arbitrary code by exploiting the go.mod toolchain directive when running the go command within a module.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Go","cpe":[{"product":"go","vendor":"golang"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"}],"description":"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.","ecosystems":["Bitnami","Go"],"exploits":{"exploitdb":0,"first_seen":"2024-02-24","github_poc":1,"max_poc_stars":1,"metasploit":0,"nuclei":0,"refs":[{"date":"2024-02-24T08:27:57Z","kind":"github_poc","ref":"https://github.com/ayrustogaru/cve-2023-39320","stars":1,"title":null}],"tier":"poc_unverified"},"has_fix":true,"headline":"Arbitrary code execution via go.mod toolchain directive in cmd/go","id":"CVE-2023-39320","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"golang:go","products":["golang:go"],"type":"code_injection","year":"2023"},"n_packages":2,"n_references":6,"next":{"headline":"Panic when processing post-handshake message on QUIC connections in crypto/tls","id":"CVE-2023-39321"},"packages":[{"ecosystem":"Bitnami","fixed":["1.21.1"],"introduced":["1.21.0"],"last_affected":[],"package":"golang","purl":"pkg:bitnami/golang","source":"BIT-golang-2023-39320"},{"ecosystem":"Go","fixed":["1.21.1"],"introduced":["1.21.0-0"],"last_affected":[],"package":"toolchain","purl":"pkg:golang/toolchain","source":"GO-2023-2042"}],"prev":{"headline":"Improper handling of special tags within script contexts in html/template","id":"CVE-2023-39319"},"products":["cmd/go"],"published":"2023-09-08","related":[{"cvss_score":8.1,"headline":"Microsoft Windows CryptoAPI Spoofing","id":"CVE-2020-0601","kev_date_added":"2021-11-03","published":"2020-01-14"},{"cvss_score":9.8,"headline":"Missing bound checks can lead to memory corruption in safe Go in cmd/compile","id":"CVE-2026-27143","kev_date_added":null,"published":"2026-04-08"},{"cvss_score":9.8,"headline":"Unexpected behavior from Is methods for IPv4-mapped IPv6 addresses in net/netip","id":"CVE-2024-24790","kev_date_added":null,"published":"2024-06-05"},{"cvss_score":9.8,"headline":"Improper handling of JavaScript whitespace in html/template","id":"CVE-2023-24540","kev_date_added":null,"published":"2023-05-11"},{"cvss_score":9.8,"headline":"Backticks not treated as string delimiters in html/template","id":"CVE-2023-24538","kev_date_added":null,"published":"2023-04-06"},{"cvss_score":9.8,"headline":"Other in go/golang","id":"CVE-2012-2666","kev_date_added":null,"published":"2021-07-09"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-02-13","vendors":["Go toolchain"]},"summary":"Attackers can execute arbitrary code by exploiting the go.mod toolchain directive when running the go command within a module.","url":"https://insights.sbomify.com/CVE-2023-39320/"}