HOMEVULNERABILITIESCVE-2021-34636
HIGH

CVE-2021-34636

CWE-352Published: September 28, 2021· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official Description

The Countdown and CountUp, WooCommerce Sales Timers WordPress plugin is vulnerable to Cross-Site Request Forgery via the save_theme function found in the ~/includes/admin/coundown_theme_page.php file due to a missing nonce check which allows attackers to inject arbitrary web scripts, in versions up to and including 1.5.7.

NVD Source

Technical Analysis

CVE-2021-34636 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

wpdevart1 product(s)
countdown and countup\, woocommerce sales timer
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://plugins.trac.wordpress.org/changeset/2605523/countdown-wpdevart-extended/trunk/includes/admin/coundown_theme_page.php
PATCHhttps://plugins.trac.wordpress.org/changeset/2605523/countdown-wpdevart-extended/trunk/includes/admin/coundown_theme_page.php
ADVISORYhttps://www.wordfence.com/vulnerability-advisories/#CVE-2021-34636
ADVISORYhttps://www.wordfence.com/vulnerability-advisories/#CVE-2021-34636

All References (4)

→
https://plugins.trac.wordpress.org/changeset/2605523/countdown-wpdevart-extended/trunk/includes/admin/coundown_theme_page.phpPatch · Third Party Advisory
→
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34636Third Party Advisory
→
https://plugins.trac.wordpress.org/changeset/2605523/countdown-wpdevart-extended/trunk/includes/admin/coundown_theme_page.phpPatch · Third Party Advisory
→
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34636Third Party Advisory

Quick Facts

CVE IDCVE-2021-34636
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-352
CISA KEVNo
Affected1 vendor(s)
PublishedSep 28, 2021

Related CVEs (CWE-352)

CVE-2025-32642
10.0
CVE-2017-5145
10.0
CVE-2025-23922
10.0
CVE-2017-5959
9.8
CVE-2023-51673
9.8
CVE-2024-47634
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-34636 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2021-34636·NVD