BREW-ABCDE-CVE-2026-77568 (CVE-2026-77568)

Vulnerability from osv_homebrew – Published: 2026-09-24 10:46 – Updated: 2026-09-24 10:46 – Source website
VLAI
Summary
Mojolicious: CSRF tokens are vulnerable to BREACH attacks
Details

Mojolicious is a real-time web framework for Perl. Prior to 9.48, the Mojolicious CSRF helpers csrf_field, csrf_token, and csrf_protect reuse an unchanged per-session token in rendered HTML. When response compression is enabled and attacker-influenced content is reflected in the same response, an unauthenticated attacker who can induce many victim requests and observe response sizes can use a BREACH compression side channel to recover the token and forge cross-site requests. API-only deployments that never render the token in HTML are not affected. This issue is fixed in version 9.48.

Severity
4.2 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": null,
        "range_state": "affected",
        "resource": "Mojo::Base",
        "resource_purl": "pkg:cpan/SRI/Mojolicious@8.64",
        "upstream_fixed_in": "9.48"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "abcde",
        "purl": "pkg:brew/abcde"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.9.3_1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "medium",
    "source": "matched",
    "strategy": "cpansa",
    "upstream_evidence": [
      {
        "ecosystem": "CPAN",
        "key": "pkg:cpan/SRI/Mojolicious@8.64",
        "name": "Mojolicious",
        "resource": "Mojo::Base",
        "strategy": "cpansa",
        "subject_version": "8.64"
      }
    ]
  },
  "details": "Mojolicious is a real-time web framework for Perl. Prior to 9.48, the Mojolicious CSRF helpers csrf_field, csrf_token, and csrf_protect reuse an unchanged per-session token in rendered HTML. When response compression is enabled and attacker-influenced content is reflected in the same response, an unauthenticated attacker who can induce many victim requests and observe response sizes can use a BREACH compression side channel to recover the token and forge cross-site requests. API-only deployments that never render the token in HTML are not affected. This issue is fixed in version 9.48.",
  "id": "BREW-abcde-CVE-2026-77568",
  "modified": "2026-09-24T10:46:15Z",
  "published": "2026-09-24T10:46:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77568.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/mojolicious/mojo/security/advisories/GHSA-cf46-h6jw-mj3r"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77568"
    },
    {
      "type": "FIX",
      "url": "https://github.com/mojolicious/mojo/commit/01921fbbbbeca2d1397e082d4a647f9b84c24e27"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Mojolicious: CSRF tokens are vulnerable to BREACH attacks",
  "upstream": [
    "CVE-2026-77568",
    "GHSA-cf46-h6jw-mj3r"
  ]
}



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