GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

GHSA-7CQV-QCQ2-R765

Vulnerability from github – Published: 2025-12-08 17:56 – Updated: 2025-12-17 00:47
VLAI
Summary
1Panel IP Access Control Bypass via Untrusted X-Forwarded-For Headers
Details

Summary

The server trusts all reverse-proxy headers by default, so any remote client can spoof X-Forwarded-For to bypass IP-based protections (AllowIPs, API IP whitelist, “localhost-only” checks). All IP-based access control becomes ineffective.

Details

  • Gin is created with defaults (gin.Default()), which sets TrustedProxies = 0.0.0.0/0 and uses X-Forwarded-For/X-Real-IP to compute ClientIP().

  • IP-based controls rely on ClientIP():

    • AllowIPs / BindDomain (core/middleware/ip_limit.go, core/utils/security/security.go).
    • API IP whitelist (core/middleware/api_auth.go).
    • "localhost-only" checks that depend on ClientIP().

  • Because no trusted-proxy range is enforced, any client can send X-Forwarded-For: 127.0.0.1 (or a whitelisted IP) and be treated as coming from that address.

Impact

All IP-based access control is rendered ineffective: remote clients can masquerade as localhost or any whitelisted IP, defeating AllowIPs, API IP whitelists, and “localhost-only” protections.

Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/1Panel-dev/1Panel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.14"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/1Panel-dev/1Panel/agent"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.0-20251201063338-94f7d78cc976"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-66508"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-290"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-12-08T17:56:57Z",
    "nvd_published_at": "2025-12-09T16:18:19Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\nThe server trusts all reverse-proxy headers by default, so any remote client can spoof `X-Forwarded-For` to bypass IP-based protections (AllowIPs, API IP whitelist, \u201clocalhost-only\u201d checks). All IP-based access control becomes ineffective.\n\n### Details\n- Gin is created with defaults (`gin.Default()`), which sets `TrustedProxies = 0.0.0.0/0` and uses `X-Forwarded-For`/`X-Real-IP` to compute `ClientIP()`.\n\n- IP-based controls rely on `ClientIP()`:\n    - AllowIPs / BindDomain (core/middleware/ip_limit.go, core/utils/security/security.go).\n    - API IP whitelist (core/middleware/api_auth.go).\n    - \"localhost-only\" checks that depend on `ClientIP()`.\n\n- Because no trusted-proxy range is enforced, any client can send `X-Forwarded-For: 127.0.0.1` (or a whitelisted IP) and be treated as coming from that address.\n\n### Impact\nAll IP-based access control is rendered ineffective: remote clients can masquerade as localhost or any whitelisted IP, defeating AllowIPs, API IP whitelists, and \u201clocalhost-only\u201d protections.",
  "id": "GHSA-7cqv-qcq2-r765",
  "modified": "2025-12-17T00:47:24Z",
  "published": "2025-12-08T17:56:57Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/1Panel-dev/1Panel/security/advisories/GHSA-7cqv-qcq2-r765"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-66508"
    },
    {
      "type": "WEB",
      "url": "https://github.com/1Panel-dev/1Panel/commit/94f7d78cc9768ee244da33e09408017d1f68b5ed"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/1Panel-dev/1Panel"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "1Panel IP Access Control Bypass via Untrusted X-Forwarded-For Headers"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.