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CVE-2026-75589 Net::OAuth versions before 0.33 for Perl check HMAC-SHA1, HMAC-SHA256 and PLAINTEXT signatures with a non-constant-time comparison in verify

🗓️ 19 Aug 2026 07:20:44Reported by CPANSecType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

Net::OAuth before 0.33 uses non-constant-time eq comparison for HMAC-SHA1, HMAC-SHA256 and PLAINTEXT signatures, enabling timing attacks to recover signatures.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-75589
19 Aug 202607:20
cve
euvd
EUVD
EUVD-2026-62350
19 Aug 202607:20
euvd
nvd
NVD
CVE-2026-75589
19 Aug 202608:17
nvd
ptsecurity
Positive Technologies
PT-2026-78315
19 Aug 202600:00
ptsecurity
[
  {
    "collectionURL": "https://cpan.org/modules",
    "defaultStatus": "unaffected",
    "modules": [
      "Net::OAuth"
    ],
    "packageName": "Net-OAuth",
    "packageURL": "pkg:cpan/Net-OAuth",
    "programFiles": [
      "lib/Net/OAuth/SignatureMethod/HMAC_SHA1.pm",
      "lib/Net/OAuth/SignatureMethod/HMAC_SHA256.pm",
      "lib/Net/OAuth/SignatureMethod/PLAINTEXT.pm"
    ],
    "programRoutines": [
      {
        "name": "Net::OAuth::SignatureMethod::HMAC_SHA1::verify"
      },
      {
        "name": "Net::OAuth::SignatureMethod::HMAC_SHA256::verify"
      },
      {
        "name": "Net::OAuth::SignatureMethod::PLAINTEXT::verify"
      }
    ],
    "repo": "https://github.com/vurtdev/Net-OAuth",
    "versions": [
      {
        "lessThan": "0.33",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  }
]

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