XSS in Wordplus Better Messages
CVE-2021-24808
The BP Better Messages WordPress plugin before 1.9.9.41 sanitise (with sanitize_text_field) but does not escape the 'subject' parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting issue
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.009 (59.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Wordplus Better Messages
- Bp Better Messages — versions 1.9.9.41
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wpscan.com/vulnerability/53ff82ec-00ec-4b20-8f60-db9db8c025b4 (Exploit, Third Party Advisory)
- plugins.trac.wordpress.org/changeset/2605772/bp-better-messages/trunk/views/lay… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-24808?
- CVE-2021-24808 is a medium-severity vulnerability in Wordplus Better Messages, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-11-01.
- How severe is CVE-2021-24808?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2021-24808 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.