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Fencer Vulns
medium 6.1

CVE-2021-24956 json

Blog2Social < 6.8.7 - Reflected Cross-Site Scripting

published 2021-12-21 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11868

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known, plus a Nuclei check

Summary

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

Patch / fix

  • adenion blog2social 6.8.7

Exploit prediction

1.48% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template Blog2Social < 6.8.7 - Cross-Site Scripting nuclei detection template
  • wpscan.com https://wpscan.com/vulnerability/5882ea89-f463-4f0b-a624-150bbaf967c2 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

  • Unknown Blog2Social: Social Media Auto Post & Scheduler

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.