CVE-2021-24431: Language Bar Flags <= 1.0.8 - CSRF to Stored XSS

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-09-13 · updated 2026-06-17
Weakness: CWE-79

Description

The Language Bar Flags WordPress plugin through 1.0.8 does not have any CSRF in place when saving its settings and did not sanitise or escape them when generating the flag bar in the frontend. This could allow attackers to make a logged in admin change the settings, and set Cross-Site Scripting payload in them, which will be executed in the frontend for all users

Affected products

Language Bar Flags: through 1.0.8

References

https://wpscan.com/vulnerability/ae50cec9-5f80-4221-b6a8-4593ab66c37b
https://wpscan.com/vulnerability/ae50cec9-5f80-4221-b6a8-4593ab66c37b

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