What is CVE-2021-24956?

CVE-2021-24956 is a medium-severity vulnerability in Adenion Blog2social, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-12-21.

How severe is CVE-2021-24956?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2021-24956 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Adenion Blog2social

CVE-2021-24956

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

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-12-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.015 (74.1th percentile), scored 2026-11-11.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.015 · change: +0.000

Affected products

Adenion Blog2social
Blog2social: Social Media Auto Post & Scheduler — versions 6.8.7

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

wpscan.com/vulnerability/5882ea89-f463-4f0b-a624-150bbaf967c2 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-24956?: CVE-2021-24956 is a medium-severity vulnerability in Adenion Blog2social, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-12-21.
How severe is CVE-2021-24956?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-24956 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.