CVE-2026-39833

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{"affected": [{"affectedData": [{"collectionURL": "https://pkg.go.dev", "defaultStatus": "unaffected", "packageName": "golang.org/x/crypto/ssh/agent", "product": "golang.org/x/crypto/ssh/agent", "programRoutines": [{"name": "keyring.Add"}], "vendor": "golang.org/x/crypto", "versions": [{"lessThan": "0.52.0", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@golang.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:*", "matchCriteriaId": "D540395B-31B8-4B07-8F79-F5C631BBD5C8", "versionEndExcluding": "0.52.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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 not in effect. NewKeyring() now returns an error when unsupported constraints are requested."}, {"lang": "es", "value": "El llavero en memoria devuelto por NewKeyring() acept\u00f3 silenciosamente claves con la restricci\u00f3n ConfirmBeforeUse pero nunca la aplic\u00f3. La clave firmar\u00eda sin ninguna solicitud de confirmaci\u00f3n, sin ninguna indicaci\u00f3n al llamador de que la restricci\u00f3n no estaba en vigor. NewKeyring() ahora devuelve un error cuando se solicitan restricciones no compatibles."}], "id": "CVE-2026-39833", "lastModified": "2026-08-11T22:17:25.250", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-39833", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-22T18:57:41.103317Z", "version": "2.0.3"}}]}, "published": "2026-05-22T04:16:22.773", "references": [{"source": "security@golang.org", "url": "https://go.dev/cl/778642"}, {"source": "security@golang.org", "tags": ["Issue Tracking"], "url": "https://go.dev/issue/79436"}, {"source": "security@golang.org", "tags": ["Mailing List"], "url": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI"}, {"source": "security@golang.org", "tags": ["Vendor Advisory"], "url": "https://pkg.go.dev/vuln/GO-2026-5005"}], "sourceIdentifier": "security@golang.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.52.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "golang.org/x/crypto/ssh/agent", "source": "cna", "vendor": "golang.org/x/crypto"}, "product": "ssh", "vendor": "golang"}], "created": "2026-05-22T05:30:28.166859+00:00", "updated": "2026-05-28T19:15:06.783789+00:00", "vendors": ["golang", "golang$PRODUCT$ssh"]}