TI-2021-06916 Aliases CVE-2021-24633 GHSA-3qwq-8wfq-2pfc

Countdown Block < 1.1.2 - Missing Authorisation in AJAX action

LOW 21CWE-862Published 2021-09-27 · Updated 2024-08-03

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-862.

Summary

The Countdown Block WordPress plugin before 1.1.2 does not have authorisation in the eb_write_block_css AJAX action, which allows any authenticated user, such as Subscriber, to modify post contents displayed to users.

Why it matters now

EPSS 0.00671 52nd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed Countdown Block (Unknown): 1.1.2

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Unknown	Countdown Block	1.1.2 to before 1.1.2	1.1.2	Patch available	CNA

Countdown Block VendorUnknown Affected 1.1.2 to before 1.1.2 Fixed in 1.1.2 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:wpdeveloper:countdown_block::::::wordpress::*	before 1.1.2	Vulnerable	wpdevteam

cpe:2.3:a:wpdeveloper:countdown_block:*:*:*:*:*:wordpress:*:* Versions before 1.1.2 Vulnerable ·wpdevteam

Remediation

Fix · CNA Countdown Block (Unknown) Fixed in 1.1.2

Timeline

2026-10-02 Threatist record created from CVE-2021-24633
2026-10-03 Alias added: GHSA-3qwq-8wfq-2pfc

References

Exploit 1

https://wpscan.com/vulnerability/431901eb-0f95-4033-b943-324e6d3844a5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences