What’s Vulnerable › Vulnerabilities

CVE-2026-45012: Apostrophe has authenticated SSRF in rich-text widget import via @apostrophecms/area/validate-widget

• Severity: high (CVSS 7.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-12 · updated 2026-10-26
• Weakness: CWE-918

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.

Affected products

• apostrophecms apostrophe: through 4.29.0

References

• https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-pr28-mf3q-qpg6
• https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-pr28-mf3q-qpg6

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