Stored XSS via username rendering
Published Jun 2, 2022 · Updated Aug 3, 2024
Cross-site scripting in BigBlueButton Greenlight 2.11.1 allows remote authenticated users to execute JavaScript in another user's browser. The Share Room Access dialog inserts an attacker-controlled username into page markup without sufficient validation, so a payload runs when a room administrator later opens the dialog after granting that account access. Exploitation requires an active Greenlight account and prior room sharing; successful execution can read confidential page data or manipulate the victim's browser session.
Summary
What happened
Cross-site scripting in BigBlueButton Greenlight 2.11.1 allows remote authenticated users to execute JavaScript in another user's browser. The Share Room Access dialog inserts an attacker-controlled username into page markup without sufficient validation, so a payload runs when a room administrator later opens the dialog after granting that account access. Exploitation requires an active Greenlight account and prior room sharing; successful execution can read confidential page data or manipulate the victim's browser session.
The record
- CVE
- CVE-2022-26497
- Published
- Jun 2, 2022
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 2, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
Affected products and versions are unavailable in this record.
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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