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      "title": "Invoking  bypass of certificate restrictions in golang.org/x/crypto/ssh",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-39828.json",
      "version": "9"
    },
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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-07-10T16:26:07+00:00",
      "cve": "CVE-2026-39828",
      "id": "CVE-2026-39828",
      "initial_release_date": "2026-05-22T02:31:26.883000+00:00",
      "product_status:fixed": "241",
      "product_status:known_affected": "163",
      "product_status:known_not_affected": "395",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Unauthorized command execution via discarded SSH permissions",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39828.json",
      "version": "3"
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A remote attacker could exploit this vulnerability when an SSH server authentication callback returned a PartialSuccessError with non-nil permissions. This flaw caused these permissions to be silently discarded, potentially bypassing certificate restrictions, such as a force-command, after a second authentication factor succeeded. This could lead to unauthorized command execution or access.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-281\", \"description\": \"Improper Preservation of Permissions\"}]}], \"providerMetadata\": {\"orgId\": \"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\", \"shortName\": \"redhat-SADP\", \"dateUpdated\": \"2026-07-10T12:05:42.948Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"LOW\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-39828\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-05-22T17:43:55.428395Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-05-22T17:44:14.299Z\"}}], \"cna\": {\"title\": \"Invoking  bypass of certificate restrictions in golang.org/x/crypto/ssh\", \"credits\": [{\"lang\": \"en\", \"value\": \"NCC Group Cryptography Services, sponsored by Teleport\"}], \"affected\": [{\"vendor\": \"golang.org/x/crypto\", \"product\": \"golang.org/x/crypto/ssh\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"0.52.0\", \"versionType\": \"semver\"}], \"packageName\": \"golang.org/x/crypto/ssh\", \"collectionURL\": \"https://pkg.go.dev\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"connection.serverAuthenticate\"}, {\"name\": \"NewServerConn\"}]}], \"references\": [{\"url\": \"https://go.dev/issue/79562\"}, {\"url\": \"https://groups.google.com/g/golang-announce/c/a082jnz-LvI\"}, {\"url\": \"https://go.dev/cl/781621\"}, {\"url\": \"https://pkg.go.dev/vuln/GO-2026-5014\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a second factor succeeded. 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