MonsterInsights < 11.1.0 - Unauthenticated Measurement Protocol Secret Update via Empty-Key HMAC Bypass
28Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 3.7epss 0.2%
exploitation probability
0.2%top 91% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
The MonsterInsights WordPress plugin before 11.1.0 does not correctly validate the signature on one of its unauthenticated AJAX actions: when the MonsterInsights WordPress plugin before 11.1.0 is not connected to Google Analytics the HMAC signing key is empty, which lets unauthenticated attackers forge a valid signature and overwrite a MonsterInsights WordPress plugin before 11.1.0 configuration value, disrupting the MonsterInsights WordPress plugin before 11.1.0's server-side analytics in Manual GA4 mode.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Affected products
Unknown · MonsterInsightspublic PoCs found — 1
cve_referencewpscan.com/vulnerability/283331ca-cc2e-4c2c-9e3b-2e8c6f0c84d2/unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.