{
  "cveId": "CVE-2026-48990",
  "url": "https://patchblox.com/security/cve/CVE-2026-48990",
  "summary": "CVE-2026-48990 is fixed in joserfc on 1 platform by DEBIAN-CVE-2026-48990 (version 1.6.8-1), released June 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "joserfc: joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) stan...",
  "description": "joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. In versions 1.3.4 through 1.6.5, joserfc accepts oversized RFC7797 b64=false JWS payloads without applying JWSRegistry.max_payload_length, which can lead to resource exhaustion. The normal JWS compact and flattened JSON paths reject payloads above the configured payload-size limit with ExceededSizeError. The RFC7797 unencoded payload paths do not make the same check. A valid b64=false compact or flattened JSON JWS can therefore deserialize successfully with a payload larger than JWSRegistry.max_payload_length. Applications that accept lower-trust JWS values and rely on joserfc to reject oversized token content during verification have a moderate availability risk. This issue has been fixed in version 1.6.7.",
  "published": "2026-06-17T22:16:23Z",
  "severity": "medium",
  "cvss": 5.3,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
  "epss": 0.00237,
  "epssPercentile": 0.14767,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "joserfc",
      "release": "Debian 14",
      "fixedVersion": "1.6.8-1",
      "fix": "DEBIAN-CVE-2026-48990",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-48990",
      "released": "2026-06-24T14:07:24Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}