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CVE-2026-54431 Improper Data Validation in liboauth2

🗓️ 02 Jul 2026 10:30:57Reported by CERT-PLType 
cvelist
 cvelist
🔗 www.cve.org👁 38 Views

Liboauth2 DPoP verifier accepted proofs with private key in json web key header; fixed in version 2.3.0.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-54431
2 Jul 202610:30
attackerkb
Circl
CVE-2026-54431
2 Jul 202613:15
circl
CVE
CVE-2026-54431
2 Jul 202610:30
cve
Debian CVE
CVE-2026-54431
2 Jul 202610:30
debiancve
EUVD
EUVD-2026-41277
2 Jul 202610:30
euvd
NVD
CVE-2026-54431
2 Jul 202611:16
nvd
OSV
CVE-2026-54431 Improper Data Validation in liboauth2
2 Jul 202610:30
osv
OSV
DEBIAN-CVE-2026-54431
2 Jul 202611:16
osv
OSV
UBUNTU-CVE-2026-54431
2 Jul 202611:16
osv
Positive Technologies
PT-2026-54958
2 Jul 202600:00
ptsecurity
Rows per page
[
  {
    "vendor": "OpenIDC",
    "product": "liboauth2",
    "repo": "https://github.com/OpenIDC/liboauth2",
    "programFiles": [
      "src/dpop.c"
    ],
    "programRoutines": [
      {
        "name": "_oauth2_dpop_parse_and_validate()"
      }
    ],
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "2.3.0",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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02 Jul 2026 10:44Current
CVSS 45.1
EPSS0.00128
38