Invoking key constraints not enforced in golang.org/x/crypto/ssh/agent

Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2026-39833 · CVE overview and exploitation status

EUVD-2026-31389

GHSA-jppx-rxg9-jmrx

GO-2026-5005

cve-program · CVE-2026-39833

• https://go.dev/issue/79436
• https://go.dev/cl/778642
• https://groups.google.com/g/golang-announce/c/a082jnz-LvI
• https://pkg.go.dev/vuln/GO-2026-5005

euvd · EUVD-2026-31389

• https://go.dev/issue/79436
• https://go.dev/cl/778642
• https://groups.google.com/g/golang-announce/c/a082jnz-LvI
• https://pkg.go.dev/vuln/GO-2026-5005

nvd · CVE-2026-39833

• https://go.dev/cl/778642
• https://go.dev/issue/79436
• https://groups.google.com/g/golang-announce/c/a082jnz-LvI
• https://pkg.go.dev/vuln/GO-2026-5005

osv · GHSA-jppx-rxg9-jmrx

• https://nvd.nist.gov/vuln/detail/CVE-2026-39833
• https://cs.opensource.google/go/x/crypto
• https://go.dev/cl/778640
• https://go.dev/cl/778641
• https://go.dev/issue/79436
• https://groups.google.com/g/golang-announce/c/a082jnz-LvI
• https://pkg.go.dev/vuln/GO-2026-5005

osv · GO-2026-5005

• https://go.dev/issue/79436
• https://go.dev/cl/778642
• https://groups.google.com/g/golang-announce/c/a082jnz-LvI

• The in-memory keyring returned by NewKeyring() silently accepted keys with the ConfirmBeforeUse constraint but never enforced it. The key would sign without any confirmation prompt, with no indication to the caller that the constraint was n… · Advisory content revised · 7 Nov 2026