THREATPORT/VULNERABILITY/CVE-2021-24276
MEDIUM SEVERITY

CVE-2021-24276

Contact Form vulnerability

CVSS
6.1
EPSS
16.0%
EPSS pct
97th
Exploited
No known
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
Affected vendor
Supsystic
Affected product
Contact Form
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness type (CWE)
  • CWE-79 — Cross-Site Scripting (XSS)
Published
2021-05-05

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity.

Its EPSS score of 16.0% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2021-24276

  • Confirm whether Supsystic Contact Form is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-24276.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-24276

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-24276 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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