Stored XSS via unsanitized uploaded filenames
Published Dec 2, 2021 · Updated Sep 16, 2024
Stored XSS in CrafterCMS 3.1 before 3.1.12 allows remote authenticated users with Site roles to execute script via uploaded filenames. The file-upload function stores attacker-controlled filenames without neutralizing script content, and browsers render those names as active page markup. A Site role and a later page view are required; the script executes in the viewing user's browser and can read browser-accessible site data or disrupt that session.
Summary
What happened
Stored XSS in CrafterCMS 3.1 before 3.1.12 allows remote authenticated users with Site roles to execute script via uploaded filenames. The file-upload function stores attacker-controlled filenames without neutralizing script content, and browsers render those names as active page markup. A Site role and a later page view are required; the script executes in the viewing user's browser and can read browser-accessible site data or disrupt that session.
The record
- CVE
- CVE-2021-23260
- Published
- Dec 2, 2021
- Updated
- Sep 16, 2024
- Vendor
- Crafter Software Corporation
- Product
- CrafterCMS
- Classifications
- CWE-79, T1203
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 2, 2021CVE publishedPublication date reported by the CVE source.
- Sep 16, 2024Record 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=3.1 <3.1.12
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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