CVE-2023-5141 — The BSK Contact Form 7 Blacklist WordPress plugin through 1

The BSK Contact Form 7 Blacklist WordPress plugin through 1.0.1 does not sanitise and escape the inserted_count parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

01What is this vulnerability?

The BSK Contact Form 7 Blacklist WordPress plugin through 1.0.1 does not sanitise and escape the inserted_count parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

02Affected products

Vendor	Product	Versions
Unknown	BSK Contact Form 7 Blacklist	0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-12-04T21:29:50.002Z
• Last modified: 2024-08-02T07:52:06.671Z

09References

• wpscan.com — https://wpscan.com/vulnerability/9997fe8d-8027-4ae0-9885-a1f5565f2d1a