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CVE-2021-24276

46
FAUCET Score

CVE-2021-24276 is a reflected Cross-Site Scripting (XSS) vulnerability affecting the Contact Form by Supsystic WordPress plugin versions prior to 1.7.15. The flaw stems from insufficient sanitization of the 'tab' parameter on the options page, allowing malicious script injection. With a CVSS score of 6.1 (Medium), this vulnerability can be exploited remotely with low complexity, requiring user interaction to achieve partial loss of confidentiality and integrity. While not currently on the KEV list or actively exploited, public exploit code exists via ExploitDB and Nuclei templates, though community discussion and media coverage remain minimal.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.7.15CPE matchmatch criteria
cpe:2.3:a:supsystic:contact_form:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
16.04%
Probability of exploitation in next 30 days
EPSS Percentile
96.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-24276 · Sep 28, 2021
ExploitDB: EDB-50344 · Sep 28, 2021
This CVE's current EPSS score of 0.1604 is in the 99th percentile among its peer group of 26,234 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/164308/WordPress-Contact-Form-1.7.14-Cross-Site-Scripting.html
ExploitThird Party AdvisoryVDB Entry
wpscan.com / vulnerability/1301123c-5e63-432a-ab90-3221ca532d9c
ExploitThird Party Advisory