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CVE-2026-103291

Ghost 3.20.2 before 6.51.0 SSRF via image-size fetch

CVSS 4.0 5.3 MEDIUMCVSS 3.1 6.4 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-103291

Published

Ghost versions from 3.20.2 before 6.51.0 contain a server-side request forgery vulnerability in image dimension refetching that allows authenticated staff users to trigger outbound HTTP requests to arbitrary URLs. Attackers can point image cards at attacker-controlled hosts or internal network endpoints to access metadata services and internal resources unavailable from the public internet.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-103291

Published

Ghost

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "TryGhost",
                    "product": "Ghost",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:npm/ghost",
                    "versions": [
                        {
                            "version": "3.20.2",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "6.51.0"
                        },
                        {
                            "version": "6.51.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON