CVE-2026-119334 (GCVE-0-2026-119334)

Vulnerability from cvelistv5 – Published: 2026-10-30 20:01 – Updated: 2026-10-30 20:01
VLAI
Title
Pi-hole: file:// adlist read check and curl can resolve different files
Summary
Pi-hole is a DNS sinkhole that protects devices from unwanted content without installing any client-side software. Prior to 6.5, gravity.sh checks file:// adlist readability with sudo -u pihole test -r but then allows curl, sometimes running as root, to normalize URL dot segments and open a different file. A pihole-readable decoy can therefore pass the check while curl reads a root-only target, and /proc/self paths can similarly resolve against different processes. Exploitation requires an administrator who can add adlists and can place a symlink and decoy on the filesystem. This issue is fixed in version 6.5.
Severity
2.2 (Low)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 8077 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
pi-hole pi-hole Affected: < 6.5
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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        }
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              "cweId": "CWE-59",
              "description": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
              "lang": "en",
              "type": "CWE"
            }
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      "providerMetadata": {
        "dateUpdated": "2026-10-30T20:01:59.115Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
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      ],
      "source": {
        "advisory": "GHSA-g63w-24cr-p3w6",
        "discovery": "UNKNOWN"
      },
      "title": "Pi-hole: file:// adlist read check and curl can resolve different files"
    }
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  "cveMetadata": {
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-119334",
    "datePublished": "2026-10-30T20:01:59.115Z",
    "dateReserved": "2026-10-29T20:44:30.285Z",
    "dateUpdated": "2026-10-30T20:01:59.115Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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      "percentile": "0.27857"
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                    "version": "\u003c 6.5"
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        ],
        "cveTags": [],
        "descriptions": [
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            "lang": "en",
            "value": "Pi-hole is a DNS sinkhole that protects devices from unwanted content without installing any client-side software. Prior to 6.5, gravity.sh checks file:// adlist readability with sudo -u pihole test -r but then allows curl, sometimes running as root, to normalize URL dot segments and open a different file. A pihole-readable decoy can therefore pass the check while curl reads a root-only target, and /proc/self paths can similarly resolve against different processes. Exploitation requires an administrator who can add adlists and can place a symlink and decoy on the filesystem. This issue is fixed in version 6.5."
          }
        ],
        "id": "CVE-2026-119334",
        "lastModified": "2026-10-30T20:17:07.967",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
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                "confidentialityImpact": "LOW",
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            "url": "https://github.com/pi-hole/pi-hole/pull/6719"
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            "url": "https://github.com/pi-hole/pi-hole/releases/tag/v6.5"
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        "vulnStatus": "Received",
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                "value": "CWE-59"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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