XSS in Supsystic Contact Form
CVE-2021-24276
The Contact Form by Supsystic WordPress plugin before 1.7.15 did not sanitise the tab parameter of its options page before outputting it 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: 0.160 (96.9th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.160 · newest: 0.160 · change: 0.000
Affected products
- Supsystic Contact Form
- Supsystic Contact Form By — versions 1.7.15
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wpscan.com/vulnerability/1301123c-5e63-432a-ab90-3221ca532d9c (Exploit, Third Party Advisory)
- packetstormsecurity.com/files/164308/WordPress-Contact-Form-1.7.14-Cross-Site-S… (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-24276?
- CVE-2021-24276 is a medium-severity vulnerability in Supsystic Contact Form, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-05-05.
- How severe is CVE-2021-24276?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2021-24276 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.