Internal data disclosure via DNS-resolved SSRF
Published Feb 9, 2026 · Updated Feb 9, 2026
SSRF in Pixel & Tonic Craft CMS 3.5.0 through 4.16.17 and 5.0.0-RC1 through 5.8.21 allows remote authenticated users to read internal data. The save_images_Asset resolver's handleUpload() validates only the supplied hostname string, then fetches its DNS-resolved internal address and accepts non-image content when an allowed .txt filename bypasses downstream image validation. Exploitation requires GraphQL, a token authorized for the mutation, and an attacker-controlled domain; retrieved metadata or other internal responses are written to an asset URL that the attacker can download.
Summary
What happened
SSRF in Pixel & Tonic Craft CMS 3.5.0 through 4.16.17 and 5.0.0-RC1 through 5.8.21 allows remote authenticated users to read internal data. The save_images_Asset resolver's handleUpload() validates only the supplied hostname string, then fetches its DNS-resolved internal address and accepts non-image content when an allowed .txt filename bypasses downstream image validation. Exploitation requires GraphQL, a token authorized for the mutation, and an attacker-controlled domain; retrieved metadata or other internal responses are written to an asset URL that the attacker can download.
The record
- CVE
- CVE-2026-25492
- Published
- Feb 9, 2026
- Updated
- Feb 9, 2026
- Vendor
- Pixel & Tonic
- Product
- Craft CMS
- Classifications
- CWE-918, T1552.005
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 9, 2026CVE publishedPublication date reported by the CVE source.
- Feb 9, 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.
- Affected versionversion=>= 3.5.0, < 4.16.18
- Affected versionversion=>= 5.0.0-RC1, < 5.8.22
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
- Vendor GraphQL SSRF proof of conceptproof of concept · demonstrated
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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