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CVE-2021-34636

27
FAUCET Score

CVE-2021-34636 is a Cross-Site Request Forgery (CSRF) vulnerability in the Countdown and CountUp, WooCommerce Sales Timers WordPress plugin, affecting versions up to and including 1.5.7. This flaw, stemming from a missing nonce check in the save_theme function, allows unauthenticated attackers to inject arbitrary web scripts. With a CVSS score of 8.8 (High), successful exploitation could lead to high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.5.7CPE matchmatch criteria
cpe:2.3:a:wpdevart:countdown_and_countup\,_woocommerce_sales_timer:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.63%
Probability of exploitation in next 30 days
EPSS Percentile
46.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0063 is in the 48th percentile among its peer group of 14,855 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

plugins.trac.wordpress.org / changeset/2605523/countdown-wpdevart-extended/trunk/includes/admin/coundown_theme_page.php
PatchThird Party Advisory
wordfence.com / vulnerability-advisories
Third Party Advisory