CVE-2026-45012Public exploitNetwork attack vector

Authenticated SSRF via unrestricted rich-text image fetch

Published Jun 12, 2026 · Updated Jun 12, 2026

Server-side request forgery in ApostropheCMS 4.29.0 and earlier allows remote authenticated users to make server-side requests. The rich-text widget sanitizer accepts import.html, resolves attacker-supplied img src values, fetches each URL without restricting its destination, and imports the response through image attachment handling. Rich-text editing permission is required; reachable internal services can be probed, and image-compatible responses can be persisted and retrieved through the application.

CVSS severity7.6
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side request forgery in ApostropheCMS 4.29.0 and earlier allows remote authenticated users to make server-side requests. The rich-text widget sanitizer accepts import.html, resolves attacker-supplied img src values, fetches each URL without restricting its destination, and imports the response through image attachment handling. Rich-text editing permission is required; reachable internal services can be probed, and image-compatible responses can be persisted and retrieved through the application.

The record

CVE
CVE-2026-45012
Published
Jun 12, 2026
Updated
Jun 12, 2026
Vendor
Apostrophe Technologies
Product
ApostropheCMS
Classifications
CWE-918, T1046
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 4.29.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Apostrophe Technologies · ApostropheCMSversion=<= 4.29.0

Published CVSS scores

7.6GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1046Network Service Discovery

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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