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CVE-2026-53425 Missing InResponseTo validation in Samly allows acceptance of unsolicited SAML responses

🗓️ 20 Aug 2026 17:26:35Reported by EEFType 
cvelist
 cvelist
🔗 www.cve.org👁 5 Views

samly SPHandler.validate_authresp skips InResponseTo check, allowing unsolicited SAML auth bypass.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-53425
20 Aug 202619:10
circl
cve
CVE
CVE-2026-53425
20 Aug 202600:00
cve
euvd
EUVD
EUVD-2026-63489
20 Aug 202617:26
euvd
nvd
NVD
CVE-2026-53425
20 Aug 202618:16
nvd
osv
OSV
EEF-CVE-2026-53425 Missing InResponseTo validation in Samly allows acceptance of unsolicited SAML responses
20 Aug 202617:26
osv
ptsecurity
Positive Technologies
PT-2026-79073
20 Aug 202600:00
ptsecurity
[
  {
    "collectionURL": "https://repo.hex.pm",
    "cpes": [
      "cpe:2.3:a:dropbox:samly:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.Samly.SPHandler'"
    ],
    "packageName": "samly",
    "packageURL": "pkg:hex/samly",
    "product": "samly",
    "programFiles": [
      "lib/samly/sp_handler.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.Samly.SPHandler':consume_signin_response/1"
      }
    ],
    "repo": "https://github.com/dropbox/samly",
    "vendor": "dropbox",
    "versions": [
      {
        "lessThan": "*",
        "status": "affected",
        "version": "0.3.0",
        "versionType": "semver"
      }
    ]
  },
  {
    "collectionURL": "https://github.com",
    "cpes": [
      "cpe:2.3:a:dropbox:samly:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.Samly.SPHandler'"
    ],
    "packageName": "dropbox/samly",
    "packageURL": "pkg:github/dropbox/samly",
    "product": "samly",
    "programFiles": [
      "lib/samly/sp_handler.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.Samly.SPHandler':consume_signin_response/1"
      }
    ],
    "repo": "https://github.com/dropbox/samly",
    "vendor": "dropbox",
    "versions": [
      {
        "lessThan": "*",
        "status": "affected",
        "version": "8a5bb1b4a4753d05470da2036323477f63cfdf4c",
        "versionType": "git"
      }
    ]
  },
  {
    "collectionURL": "https://github.com",
    "cpes": [
      "cpe:2.3:a:handnot2:samly:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.Samly.SPHandler'"
    ],
    "packageName": "handnot2/samly",
    "packageURL": "pkg:github/handnot2/samly",
    "product": "samly",
    "programFiles": [
      "lib/samly/sp_handler.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.Samly.SPHandler':consume_signin_response/1"
      }
    ],
    "repo": "https://github.com/handnot2/samly",
    "vendor": "handnot2",
    "versions": [
      {
        "lessThan": "*",
        "status": "affected",
        "version": "8a5bb1b4a4753d05470da2036323477f63cfdf4c",
        "versionType": "git"
      }
    ]
  }
]

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