What’s Vulnerable › Vulnerabilities

CVE-2021-43633

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-04-14 · updated 2026-06-17
• Weakness: CWE-79

Description

Sourcecodester Messaging Web Application 1.0 is vulnerable to stored XSS. If a sender inserts valid scripts into the chat, the script will be executed on the receiver chat.

Affected products

• Messaging Web Application Project Messaging Web Application: 1.0

References

• https://medium.com/%40shaunwhorton/how-i-found-two-different-xss-vulnerabilities-a491144e8494
• https://www.sourcecodester.com/php/14996/messaging-web-application-phpoop-free-source-code.html
• https://medium.com/%40shaunwhorton/how-i-found-two-different-xss-vulnerabilities-a491144e8494
• https://www.sourcecodester.com/php/14996/messaging-web-application-phpoop-free-source-code.html

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