Medium severity · published Oct 1, 2026
CVE-2026-103291
Ghost 3.20.2 before 6.51.0 SSRF via image-size fetch
6.4
CVSS
0.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GH
Ghost · TryGhost
3.20.2 before 6.51.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-103291
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-103291
vendor-advisory
https://github.com/TryGhost/Ghost/security/advisories/GHSA-rrq6-9r3c-7w26
third-party-advisory
https://www.vulncheck.com/advisories/ghost-3.20.2-before-6.51.0-ssrf-via-image-size-fetch
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