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High severity · published Jun 12, 2026
CVE-2026-45012
Apostrophe has authenticated SSRF in rich-text widget import via @apostrophecms/area/validate-widget
7.6
CVSS
0.2%
EPSS
No
On KEV
Description
ApostropheCMS is an open-source Node.js content management system. Versions up to and including 4.29.0 contain an authenticated server-side request forgery (SSRF) in the rich-text widget import flow. An authenticated user who can submit/edit rich-text widget content can cause the server to fetch attacker-controlled URLs during widget validation. For image-compatible responses, the fetched content can be persisted and re-hosted by Apostrophe, allowing response exfiltration. As of time of publication, no known patched versions are available.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AP
apostrophe · apostrophecms
<= 4.29.0 · source: vendor
Affected product
AP
apostrophe
apostrophecms
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45012
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-45012
github.com
https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-pr28-mf3q-qpg6
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