{"answers":{"affected":"1 open source package ship an affected version, including toolchain.","exploited":"There is no known exploitation of CVE-2026-97038 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-2026-97038 is a vulnerability in cmd/go, published on 11 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-97038 and fix it if it is affected.\n\nWhat it is: CVE-2026-97038 is a vulnerability in cmd/go, published on 11 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-97038 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-2026-97038/ (Markdown: https://insights.sbomify.com/CVE-2026-97038/index.md)","id":"CVE-2026-97038","markdown":"https://insights.sbomify.com/CVE-2026-97038/index.md","name":"CVE-2026-97038","record":{"aliases":["ALPINE-CVE-2026-97038","DEBIAN-CVE-2026-97038","GHSA-q9p5-q4jx-v656","GO-2026-6853","UBUNTU-CVE-2026-97038"],"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 containing \".syso\" files or cgo linker inputs could inject arbitrary linker flags or execute arbitrary code at link time. Linker input files—including \".syso\" files, direct object or library inputs in \"#cgo LDFLAGS\", and libraries in \"-L\" directories—were passed to the external linker without validating their format or checking for embedded linker options. Across platforms, this allowed executing GNU ld implicit linker scripts disguised as libraries or \".syso\" files (or loaded via \"-l:\u003cfilename\u003e\" or \"-l\" containing path separators), injecting unallowlisted linker flags via PE/COFF \".drectve\" sections on Windows or Mach-O \"LC_LINKER_OPTION\" load commands on Darwin, or invoking LTO plugins via GCC or LLVM LTO intermediate representation sections in ELF, PE/COFF, or Mach-O objects. The go command now verifies that \".syso\" files, direct linker inputs, and libraries in \"-L\" directories are valid binary objects or archives that do not contain unallowlisted \".drectve\" directives, \"LC_LINKER_OPTION\" load commands, or LTO IR sections, and disallows \"-l:\u003cfilename\u003e\" and \":\", \"=\", or path separators in \"-l\" flags.","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":"Arbitrary code execution via crafted .syso files and cgo linker input files in cmd/go","id":"CVE-2026-97038","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":4,"next":{"headline":"Flag sanitization bypass via \"#cgo pkg-config:\" directives in cmd/go","id":"CVE-2026-97039"},"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-2026-6853"}],"prev":{"headline":"Linker script injection via split -Wl, flags and Darwin or symbol linker flags in cgo in cmd/go","id":"CVE-2026-97037"},"products":["cmd/go"],"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-2026-97038/"}