PSIRT Header injection in Web Filter warning page

{
  "id": "98b8c5b86c6c7a660bacc33089e6652c3ffd007469fbe66819fd35c229da31dc",
  "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-152",
  "method": "llm",
  "payload": {
    "kind": "patch",
    "title": "PSIRT Header injection in Web Filter warning page",
    "summary": "A vulnerability in FortiOS and FortiProxy may let an attacker with a valid web filter override token inject arbitrary HTTP headers by tricking a user into clicking a crafted link.",
    "evidence": "An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability [CWE-113] in FortiOS and FortiProxy may allow an attacker in possession of a valid web filter override token to inject arbitrary headers via tricking a user into clicking on a crafted link.",
    "products": [
      {
        "name": {
          "value": "FortiOS",
          "evidence": "FortiOS 7.6"
        },
        "prerequisites": [
          {
            "value": "valid web filter override token",
            "evidence": "in possession of a valid web filter override token"
          }
        ],
        "fixed_versions": [
          {
            "value": "7.6.5 or above",
            "evidence": "Upgrade to 7.6.5 or above"
          }
        ],
        "affected_versions": [
          {
            "value": "7.6.0 through 7.6.4",
            "evidence": "7.6.0 through 7.6.4"
          },
          {
            "value": "7.4 all versions",
            "evidence": "7.4 all versions"
          },
          {
            "value": "7.2 all versions",
            "evidence": "7.2 all versions"
          }
        ]
      },
      {
        "name": {
          "value": "FortiProxy",
          "evidence": "FortiProxy 7.6"
        },
        "prerequisites": [
          {
            "value": "valid web filter override token",
            "evidence": "in possession of a valid web filter override token"
          }
        ],
        "fixed_versions": [
          {
            "value": "7.6.5 or above",
            "evidence": "Upgrade to 7.6.5 or above"
          }
        ],
        "affected_versions": [
          {
            "value": "7.6.0 through 7.6.4",
            "evidence": "7.6.0 through 7.6.4"
          },
          {
            "value": "7.4 all versions",
            "evidence": "7.4 all versions"
          },
          {
            "value": "7.2 all versions",
            "evidence": "7.2 all versions"
          }
        ]
      }
    ],
    "severity": "low",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2025-62675",
        "evidence": "CVE ID CVE-2025-62675"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "Severity Low"
  },
  "source_id": "official-fortinet-psirt",
  "document_id": 23583,
  "published_at": "2026-07-14T07:00:00+00:00"
}