CVE-2021-24956: Blog2Social < 6.8.7 - Reflected Cross-Site Scripting

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-12-21 · updated 2026-06-17
Weakness: CWE-79

Description

The Blog2Social: Social Media Auto Post & Scheduler WordPress plugin before 6.8.7 does not sanitise and escape the b2sShowByDate parameter before outputting it back in an admin page, leading to a Reflected Cross-Site Scripting issue

Affected products

pr-gateway Blog2Social: Social Media Auto Post & Scheduler: before 6.8.7 — fixed in 6.8.7

How to fix

Upgrade to a fixed version: pr-gateway Blog2Social: Social Media Auto Post & Scheduler 6.8.7. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/5882ea89-f463-4f0b-a624-150bbaf967c2
https://wpscan.com/vulnerability/5882ea89-f463-4f0b-a624-150bbaf967c2

Get alerted when CVE-2021-24956 or the next vulnerability affects your stack