THREATPORT/VULNERABILITY/CVE-2021-39341
HIGH SEVERITY

CVE-2021-39341

Optinmonster vulnerability

CVSS
8.2
EPSS
24.3%
EPSS pct
98th
Exploited
No known
The OptinMonster WordPress plugin is vulnerable to sensitive information disclosure and unauthorized setting updates due to insufficient authorization validation via the logged_in_or_has_api_key function in the ~/OMAPI/RestApi.php file that can used to exploit inject malicious web scripts on sites with the plugin installed. This affects versions up to, and including, 2.6.4.
Affected vendor
Optinmonster
Affected product
Optinmonster
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Weakness type (CWE)
  • CWE-285 — Improper Authorization
  • CWE-319 — Cleartext Transmission of Sensitive Information
  • CWE-863 — Incorrect Authorization
Published
2021-11-01

Risk analysis

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

Its EPSS score of 24.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2021-39341

  • Confirm whether Optinmonster Optinmonster is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-39341.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-39341

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-39341 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2021-39341?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2021-39341.

Start free scan

No credit card. Agentless.

Related vulnerabilities

HIGH
CVE-2015-7181
Network Security Services vulnerability
HIGH
CVE-2015-7183
Firefox vulnerability
HIGH
CVE-2015-7188
Firefox vulnerability