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CVE-2026-45309

🗓️ 17 Jul 2026 18:40:02Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 64 Views🌐 WEB

CVE-2026-45309: AsyncSSH expands %u to the username, allowing unauthorized keys pre-auth via path traversal.

Related
Detection
Affected
Refs
Paths
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-45309
17 Jul 202618:40
attackerkb
cgr
Chainguard
CVE-2026-45309 vulnerabilities
2 Jun 202619:17
cgr
circl
Circl
CVE-2026-45309
17 Jul 202620:39
circl
cvelist
Cvelist
CVE-2026-45309 AsyncSSH `AuthorizedKeysFile %u` path traversal allows attacker-selected authorized keys to authenticate a traversal username
17 Jul 202618:40
cvelist
debiancve
Debian CVE
CVE-2026-45309
17 Jul 202618:40
debiancve
euvd
EUVD
EUVD-2026-45255
17 Jul 202618:40
euvd
github
Github Security Blog
AsyncSSH `AuthorizedKeysFile %u` path traversal allows attacker-selected authorized keys to authenticate a traversal username
27 May 202621:35
github
nvd
NVD
CVE-2026-45309
17 Jul 202619:17
nvd
osv
OSV
CGA-W94F-4H34-JJ3P
2 Jun 202616:26
osv
osv
OSV
CLEANSTART-2026-AZ09261 Security fixes for CVE-2023-46136, CVE-2024-12797, CVE-2024-34069, CVE-2024-49766, CVE-2024-49767, CVE-2025-62727, CVE-2025-66221, CVE-2026-0994, CVE-2026-21860, CVE-2026-22815, CVE-2026-25645, CVE-2026-26007, CVE-2026-27199, CVE-2026-27205, CVE-2026-27448, CVE-2026-27459, CVE-2026-30922, CVE-2026-31958, CVE-2026-32597, CVE-2026-34073, CVE-2026-34513, CVE-2026-34514, CVE-2026-34515, CVE-2026-34516, CVE-2026-34517, CVE-2026-34518, CVE-2026-34519, CVE-2026-34520, CVE-2026-34525, CVE-2026-35536, CVE-2026-40217, CVE-2026-40347, CVE-2026-41016, CVE-2026-41018, CVE-2026-41066, CVE-2026-42561, CVE-2026-44307, CVE-2026-44405, CVE-2026-44431, CVE-2026-44432, CVE-2026-44681, CVE-2026-45309, CVE-2026-4539, CVE-2026-45409, CVE-2026-48522, CVE-2026-48523, CVE-2026-48524, CVE-2026-48525, CVE-2026-48526, CVE-2026-48710, CVE-2026-8328, CVE-2026-8838, ghsa-29h4-r29x-hchv, ghsa-29vq-49wr-vm6x, ghsa-2g68-c3qc-8985, ghsa-2vrm-gr82-f7m5, ghsa-3wq7-rqq7-wx6j, ghsa-5239-wwwm-4pmq, ghsa-53mr-6c8q-9789, ghsa-63hf-3vf5-4wqf, ghsa-68rp-wp8r-4726, ghsa-752w-5fwx-jx9f, ghsa-78cv-mqj4-43f7, ghsa-79v4-65xg-pq4g, ghsa-7f5h-v6xp-fcq8, ghsa-7gcm-g887-7qv7, ghsa-87hc-h4r5-73f7, ghsa-966j-vmvw-g2g9, ghsa-c427-h43c-vf67, ghsa-f9vj-2wh5-fj8j, ghsa-fqwm-6jpj-5wxc, ghsa-gc5v-m9x4-r6x2, ghsa-h4gh-qq45-vh27, ghsa-hcc4-c3v8-rx92, ghsa-hg6j-4rv6-33pg, ghsa-hgf8-39gv-g3f2, ghsa-hrfv-mqp8-q5rw, ghsa-jj8c-mmj3-mmgv, ghsa-jjhc-v7c2-5hh6, ghsa-jr27-m4p2-rc6r, ghsa-m5qp-6w8w-w647, ghsa-m959-cc7f-wv43, ghsa-mj87-hwqh-73pj, ghsa-mwh4-6h8g-pg8w, ghsa-p998-jp59-783m, ghsa-q34m-jh98-gwm2, ghsa-qjxf-f2mg-c6mc, ghsa-r6ph-v2qm-q3c2, ghsa-v92g-xgxw-vvmm, ghsa-vfmq-68hx-4jfw, ghsa-w2fm-2cpv-w7v5, ghsa-xqmj-j6mv-4862 applied in versions: 3.2.0-r0, 3.2.0-r1, 3.2.1-r2, 3.2.1-r3
8 Jun 202612:29
osv
Rows per page
NVD
Vulners
Node
[
  {
    "vendor": "ronf",
    "product": "asyncssh",
    "versions": [
      {
        "version": "< 2.23.0",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
AuthorizedKeysFilepathauthorized_keys/%uPath traversal via %u expansion in AuthorizedKeysFile leading to reading files outside the intended directory.CWE-22
%upathauthorized_keys/%uPath traversal via %u expansion in AuthorizedKeysFile leading to reading files outside the intended directory.CWE-22

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30 Jul 2026 14:36Current
4.7Medium risk
Vulners AI Score4.7
CVSS 3.17.5
CVSS 48.2
EPSS0.0044
SSVC
64