{"answers":{"affected":"1 open source package ship an affected version, including toolchain.","exploited":"There is no known exploitation of CVE-2026-97043 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-2026-97043 is a vulnerability in Go toolchain cmd/compile, published on 11 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-97043 and fix it if it is affected.\n\nWhat it is: CVE-2026-97043 is a vulnerability in Go toolchain cmd/compile, published on 11 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-97043 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-2026-97043/ (Markdown: https://insights.sbomify.com/CVE-2026-97043/index.md)","id":"CVE-2026-97043","markdown":"https://insights.sbomify.com/CVE-2026-97043/index.md","name":"CVE-2026-97043","record":{"aliases":["ALPINE-CVE-2026-97043","DEBIAN-CVE-2026-97043","GHSA-26gx-chjm-8pq7","GO-2026-6848","UBUNTU-CVE-2026-97043"],"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 cgo could bypass \"#cgo LDFLAGS\" validation and cause unexpected code execution at build time, or cause the go command to panic, via crafted quoting in \"//go:cgo_ldflag\" directives. When \"cmd/cgo\" generates \"_cgo_gotypes.go\", it quotes each \"#cgo LDFLAGS\" argument with strconv.Quote in a \"//go:cgo_ldflag\" directive, but \"cmd/compile\" and \"cmd/go\" parsed those directives by splitting on raw quote characters without handling backslash escapes or unquoting the string. This mismatch allowed disallowed linker flags or unvalidated linker search paths to be smuggled past the go command's flag checks and passed to the external linker. In addition, deduplicating LDFLAGS in the go command could panic with an out-of-bounds slice index when a prefix of the flag list matched near the end of the slice. \"cmd/compile\" and \"cmd/go\" now properly handle backslash-escaped quotes and unquote \"//go:cgo_*\" pragma strings with strconv.Unquote, and the slice bounds check in processCgoOutputs has been fixed.","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":"Unexpected code execution via escaped quotes in //go:cgo_ldflag in cmd/go and cmd/compile","id":"CVE-2026-97043","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":4,"next":{"headline":"Check all ancestor namespace transitions when rendering raw text in html in golang.org/x/net","id":"CVE-2026-97045"},"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-2026-6848"}],"prev":{"headline":"Linker flag injection via cgo_import_dynamic and PE DLL names in cmd/cgo, cmd/compile, and cmd/link","id":"CVE-2026-97042"},"products":["cmd/compile","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-2026-97043/"}