Stored XSS via unescaped event fields
Published Apr 2, 2024 · Updated Aug 27, 2024
Stored cross-site scripting in My Calendar before 3.4.24 allows remote authenticated users to execute script in visitors' browsers. The event editor stores unsanitized Excerpt and Registration Information values and later emits them without output escaping. An account must have Add Events permission, which can be granted to Subscriber-level users; the script runs when an administrator edits the event or a visitor opens its front-end page.
Summary
What happened
Stored cross-site scripting in My Calendar before 3.4.24 allows remote authenticated users to execute script in visitors' browsers. The event editor stores unsanitized Excerpt and Registration Information values and later emits them without output escaping. An account must have Add Events permission, which can be granted to Subscriber-level users; the script runs when an administrator edits the event or a visitor opens its front-end page.
The record
- CVE
- CVE-2024-1274
- Published
- Apr 2, 2024
- Updated
- Aug 27, 2024
- Vendor
- Damion Armentrout
- Product
- My Calendar
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 2, 2024CVE publishedPublication date reported by the CVE source.
- Aug 27, 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=0 <3.4.24
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
- WPScan event-field stored-XSS proof of conceptproof of concept · validated
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Technologies
Your stack
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Your stack
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