CVE-2026-45069: Symfony/security http Symfony's OidcTokenHandler Accepts JWTs Missing Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-29fc-p6c4-24cg",
  "modified" : "2026-05-27T21:03:36Z",
  "published" : "2026-05-27T21:03:36Z",
  "aliases" : [ "CVE-2026-45069" ],
  "summary" : "Symfony's OidcTokenHandler Accepts JWTs Missing aud/iss/exp Claims",
  "details" : "### Description\n\n`OidcTokenHandler` is Symfony's built-in access-token handler for OpenID Connect: it validates a bearer JWT and returns the authenticated user identity. It delegates claim validation to the `web-token/jwt-checker` library's `ClaimCheckerManager`.\n\n`OidcTokenHandler::verifyClaims()` registers audience (`aud`), issuer (`iss`), and expiry (`exp`) checkers, but never passes the `$mandatoryClaims` argument to `ClaimCheckerManager::check()`. That method only validates claims that are *present* in the token: a checker for an absent claim is silently skipped. A validly-signed JWT that simply **omits** `aud`, `iss`, and `exp` therefore passes verification.\n\n### Resolution\n\nThe `OidcTokenHandler` now calls the `ClaimCheckerManager` with the list of mandatory claims so that tokens missing `aud`, `iss`, or `exp` are rejected.\n\nThe patch for this issue is available [here](https://github.com/symfony/symfony/commit/6b717aaac21b7e96798448d14c4355ea87690b3d) for branch 6.4.\n\n### Credits\n\nSymfony would like to thank Claude Mythos Preview (via Project Glasswing) for reporting the issue and providing the fix.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "symfony/security-http"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.3.0"
      }, {
        "fixed" : "6.4.40"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "symfony/security-http"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.4.0"
      }, {
        "fixed" : "7.4.12"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "symfony/security-http"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.0.0"
      }, {
        "fixed" : "8.0.12"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "symfony/symfony"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.3.0"
      }, {
        "fixed" : "6.4.40"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "symfony/symfony"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.4.0"
      }, {
        "fixed" : "7.4.12"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "symfony/symfony"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.0.0"
      }, {
        "fixed" : "8.0.12"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/symfony/symfony/security/advisories/GHSA-29fc-p6c4-24cg"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/symfony/symfony/commit/6b717aaac21b7e96798448d14c4355ea87690b3d"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2026-45069.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45069.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/symfony/symfony"
  }, {
    "type" : "WEB",
    "url" : "https://symfony.com/cve-2026-45069"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1287", "CWE-345" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-27T21:03:36Z",
    "nvd_published_at" : null
  }
}