Stored XSS via unfiltered page event handler
Published Jan 6, 2025 · Updated Jan 7, 2025
Stored XSS in Grav 1.7.45 allows remote authenticated users with page-creation rights to execute scripts in visitors' browsers. The page editor accepts an HTML anchor containing an ondblclick handler and persists it without blocking the unauthorized event attribute. A visitor, including an administrator, must open the crafted page and double-click its link; the script then runs in that visitor's Grav origin.
Summary
What happened
Stored XSS in Grav 1.7.45 allows remote authenticated users with page-creation rights to execute scripts in visitors' browsers. The page editor accepts an HTML anchor containing an ondblclick handler and persists it without blocking the unauthorized event attribute. A visitor, including an administrator, must open the crafted page and double-click its link; the script then runs in that visitor's Grav origin.
The record
- CVE
- CVE-2024-35498
- Published
- Jan 6, 2025
- Updated
- Jan 7, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-79, T1189
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 6, 2025CVE publishedPublication date reported by the CVE source.
- Jan 7, 2025Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
Affected products and versions are unavailable in this record.
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
- Stored-xss-Grav-v1.7.45 proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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