{"answers":{"affected":"1 open source package ship an affected version, including toolchain.","exploited":"There is no known exploitation of CVE-2026-97042 in the wild and no public exploit code.","exposure":"","fix":"Upgrade toolchain to a fixed version for your release line: 1.26.11 or 1.27.4.","what":"CVE-2026-97042 is a vulnerability in cmd/cgo, published on 11 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-97042 and fix it if it is affected.\n\nWhat it is: CVE-2026-97042 is a vulnerability in cmd/cgo, published on 11 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-97042 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- toolchain (Go): affected all versions; fixed in 1.26.11, 1.27.4\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-2026-97042/ (Markdown: https://insights.sbomify.com/CVE-2026-97042/index.md)","id":"CVE-2026-97042","markdown":"https://insights.sbomify.com/CVE-2026-97042/index.md","name":"CVE-2026-97042","record":{"aliases":["ALPINE-CVE-2026-97042","DEBIAN-CVE-2026-97042","GHSA-jgj7-3254-vwmv","GO-2026-6849","UBUNTU-CVE-2026-97042"],"analysis":null,"analysis_generated_by":null,"assigner":"Go","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"Building a malicious package that uses \"//go:cgo_import_dynamic\" or links against a crafted PE object on Windows could pass unsafe library arguments to the external linker. The compiler only checked the first character of the library name in \"//go:cgo_import_dynamic\" directives and skipped validation in cgo-generated files. In addition, on Windows, \"cmd/cgo\" and \"cmd/link\" did not validate imported DLL names extracted from PE object files before emitting \"-l\u003cname\u003e\" flags for the external linker, allowing a crafted DLL name containing \"..\" path traversal or special characters to reference arbitrary files on disk. The compiler now validates every character of the library name in \"//go:cgo_import_dynamic\" directives (including in cgo-generated files on Windows) and rejects \"..\" path traversal, and \"cmd/cgo\" and \"cmd/link\" reject PE imported DLL names containing path separators, \"..\", \":\", or leading \"-\" or \"@\".","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Linker flag injection via cgo_import_dynamic and PE DLL names in cmd/cgo, cmd/compile, and cmd/link","id":"CVE-2026-97042","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":4,"next":{"headline":"Unexpected code execution via escaped quotes in //go:cgo_ldflag in cmd/go and cmd/compile","id":"CVE-2026-97043"},"nickname":null,"packages":[{"ecosystem":"Go","fixed":["1.26.11","1.27.4"],"introduced":["0","1.27.0-0"],"last_affected":[],"package":"toolchain","purl":"pkg:golang/toolchain","source":"GO-2026-6849"}],"prev":{"headline":"Host linker flag injection via //go:cgo_* directives in cmd/compile and cmd/link","id":"CVE-2026-97041"},"products":["cmd/cgo","cmd/compile","cmd/link"],"published":"2026-11-11","related":[],"sources":[{"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"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-11-11","vendors":["Go toolchain"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-97042/"}