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Wed, 08 Jul 2026 15:30:00 +0000
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ssvc
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Wed, 08 Jul 2026 14:15:00 +0000
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| Description | Grav before 2.0.0 (affected through 2.0.0-rc.9 and the 2.0 branch) contains a stored CSS injection vulnerability in the Markdown image resize() media action. Prior media hardening rejects direct ?style= payloads and unsafe attribute() fallbacks, but the resize() action in Excerpts::processMediaActions() writes caller-controlled values directly into the image's styleAttributes. A lower-privileged content editor who can edit page Markdown can store a crafted image URL with semicolon-delimited CSS declarations in the resize parameters, which are rendered into the final <img style=...> attribute when a higher-privileged reviewer/admin views the page or preview. This does not require JavaScript execution but enables UI redress/overlay and content-manipulation attacks (e.g., a full-viewport fixed overlay). Fixed in 2.0.0. | |
| Title | Grav - Stored CSS Injection via Markdown Image resize() Action | |
| First Time appeared |
Getgrav
Getgrav grav |
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| Weaknesses | CWE-79 | |
| CPEs | cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Getgrav
Getgrav grav |
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| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-07-08T14:21:36.356Z
Reserved: 2026-07-01T21:54:37.946Z
Link: CVE-2026-58657
Updated: 2026-07-08T14:21:19.924Z
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OpenCVE Enrichment
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