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CVE-2026-45309

AsyncSSH is a Python package which provides an asynchronous client and server implementation of the SSHv2 protocol on top of the Python asyncio framework. Prior to 2.23.0, AsyncSSH expands the OpenSSH-compatible AuthorizedKeysFile %u token in asyncssh/config.py, asyncssh/connection.py, asyncssh/auth_keys.py, and asyncssh/misc.py with the raw SSH username during pre-authentication server config reload, allowing a server configured with AuthorizedKeysFile authorized_keys/%u to read an authorized-k
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f74f516879fa336a2fbbfdb6bf19698f82525421ea4b8fb99cf59422971e7d4a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"asyncssh","vendor":"ronf","versions":[{"status":"affected","version":"< 2.23.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e16b1711c3365e52efb63cf9094ae2fc008640cb47dc2b1061f5689df4d14726 · sha256:3bc7a2a2ee4a7617… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.2,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e16b1711c3365e52efb63cf9094ae2fc008640cb47dc2b1061f5689df4d14726 · sha256:3bc7a2a2ee4a7617… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e16b1711c3365e52efb63cf9094ae2fc008640cb47dc2b1061f5689df4d14726 · sha256:3bc7a2a2ee4a7617… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/ronf/asyncssh/commit/2af2382cce946c959a378a62f257af253dc4ab51","tags":["x_refsource_MISC"],"url":"https://github.com/ronf/asyncssh/commit/2af2382cce946c959a378a62f257af253dc4ab51"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e16b1711c3365e52efb63cf9094ae2fc008640cb47dc2b1061f5689df4d14726 · sha256:3bc7a2a2ee4a7617… · /containers/cna/references/1
{"name":"https://github.com/ronf/asyncssh/commit/3d515ba9ba0cd9990d248bdf62bcf05d51261a88","tags":["x_refsource_MISC"],"url":"https://github.com/ronf/asyncssh/commit/3d515ba9ba0cd9990d248bdf62bcf05d51261a88"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e16b1711c3365e52efb63cf9094ae2fc008640cb47dc2b1061f5689df4d14726 · sha256:3bc7a2a2ee4a7617… · /containers/cna/references/2
{"name":"https://github.com/ronf/asyncssh/security/advisories/GHSA-g794-3fmp-753h","tags":["x_refsource_CONFIRM"],"url":"https://github.com/ronf/asyncssh/security/advisories/GHSA-g794-3fmp-753h"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e16b1711c3365e52efb63cf9094ae2fc008640cb47dc2b1061f5689df4d14726 · sha256:3bc7a2a2ee4a7617… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/ronf/asyncssh/security/advisories/GHSA-g794-3fmp-753h"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e16b1711c3365e52efb63cf9094ae2fc008640cb47dc2b1061f5689df4d14726 · sha256:3bc7a2a2ee4a7617… · /containers/adp/0/references/0

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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