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Product
Really Simple Security
by · last CVE Sep 18, 2026
4
CVEs
0
On KEV
7.5
Max CVSS
0
New 30D
Vulnerabilities4In the news0Timeline
Severity mix
Critical 0High 2Medium 2Low 0
Severity
All severities4Critical0High2Medium2Low0
Exploitation
On CISA KEV0Exploited in the wild0
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-81766
6.6
0%
Aug 30
Really Simple Security < 9.8.0 - Multisite Subsite Admin+ Arbitrary Plugin Installation via rsp_upgrade_install_plugin
Affected: before 9.8.0
CVE-2026-88798
5.3
0%
Sep 18
Really Simple Security (Free) < 9.8.3 - Unauthenticated Unbounded Option Growth via Spoofed Client IP Header
Affected: 8.1.6 before 9.8.3
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