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CVE-2026-59851

A flaw was found in libssh. On servers with GSSAPIKeyExchange enabled, the gssapi-keyex path does not verify whether the authenticated Kerberos principal is authorized for the requested local user, allowing authenticated clients to log in as arbitrary users.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:33297c3fe1206bb8c0b481362cab1e87234e5ed35c415314fc1be89e39a8d1e2
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 4 assertions

{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:hummingbird:1"],"defaultStatus":"affected","packageName":"libssh-main","product":"Red Hat Hardened Images","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0.12.1-4.hum1","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a6454b532339841d6190841c79a5f9c5a5e9bd628eeee48b9a70d8fb6187fa55 · sha256:d7944705c281afff… · /containers/cna/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"libssh","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a6454b532339841d6190841c79a5f9c5a5e9bd628eeee48b9a70d8fb6187fa55 · sha256:d7944705c281afff… · /containers/cna/affected/3

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a6454b532339841d6190841c79a5f9c5a5e9bd628eeee48b9a70d8fb6187fa55 · sha256:d7944705c281afff… · /containers/cna/affected/1

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"libssh","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a6454b532339841d6190841c79a5f9c5a5e9bd628eeee48b9a70d8fb6187fa55 · sha256:d7944705c281afff… · /containers/cna/affected/2

Affected products and versions

4 source assertions
{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:hummingbird:1"],"defaultStatus":"affected","packageName":"libssh-main","product":"Red Hat Hardened Images","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0.12.1-4.hum1","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a6454b532339841d6190841c79a5f9c5a5e9bd628eeee48b9a70d8fb6187fa55 · sha256:d7944705c281afff… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"libssh","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a6454b532339841d6190841c79a5f9c5a5e9bd628eeee48b9a70d8fb6187fa55 · sha256:d7944705c281afff… · /containers/cna/affected/3
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a6454b532339841d6190841c79a5f9c5a5e9bd628eeee48b9a70d8fb6187fa55 · sha256:d7944705c281afff… · /containers/cna/affected/1
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"libssh","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a6454b532339841d6190841c79a5f9c5a5e9bd628eeee48b9a70d8fb6187fa55 · sha256:d7944705c281afff… · /containers/cna/affected/2

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a6454b532339841d6190841c79a5f9c5a5e9bd628eeee48b9a70d8fb6187fa55 · sha256:d7944705c281afff… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-863","description":"Incorrect Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a6454b532339841d6190841c79a5f9c5a5e9bd628eeee48b9a70d8fb6187fa55 · sha256:d7944705c281afff… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"RHSA-2026:42922","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:42922"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a6454b532339841d6190841c79a5f9c5a5e9bd628eeee48b9a70d8fb6187fa55 · sha256:d7944705c281afff… · /containers/cna/references/0
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-59851"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a6454b532339841d6190841c79a5f9c5a5e9bd628eeee48b9a70d8fb6187fa55 · sha256:d7944705c281afff… · /containers/cna/references/1
{"name":"RHBZ#2498184","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2498184"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a6454b532339841d6190841c79a5f9c5a5e9bd628eeee48b9a70d8fb6187fa55 · sha256:d7944705c281afff… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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