XSS in Planso Forms
CVE-2021-24516
The PlanSo Forms WordPress plugin through 2.6.3 does not escape the title of its Form before outputting it in attributes, allowing high privilege users such as admin to set XSS payload in it, even when the unfiltered_html is disallowed, leading to an Authenticated Stored Cross-Site Scripting issue.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.006 (47.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Planso Planso_forms
- Unknown Planso Forms — versions 2.6.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- contact@wpscan.com (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-24516?
- CVE-2021-24516 is a medium-severity vulnerability in Planso Forms, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2021-10-18.
- How severe is CVE-2021-24516?
- Medium severity. CVSS v3 base score is 4.8 out of 10.
- Is CVE-2021-24516 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.