Authenticated Server-Side Request Forgery in ApostropheCMS by Apostrophe
CVE-2026-45012

7.6HIGH

Key Information:

Vendor

Apostrophecms

Status
Apostrophe
Vendor
CVE Published:
12 June 2026

What is CVE-2026-45012?

ApostropheCMS, an open-source Node.js content management system, is susceptible to an authenticated server-side request forgery (SSRF) vulnerability in its rich-text widget import workflow. An authenticated user capable of submitting or editing content within the rich-text widget can exploit this vulnerability to instruct the server to fetch URLs controlled by attackers during the widget validation process. This may lead to the persistence of fetched content on Apostrophe’s servers, permitting potential exfiltration of sensitive response data. As of the latest updates, there are no patches available to remediate this issue.

Affected Version(s)

apostrophe <= 4.29.0

References

https://github.com/apostrophecms/apostrophe/security/advi...
x_refsource_CONFIRM

CVSS V3.1

Score:
7.6
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.