CVE-2026-88798: CWE-400 Uncontrolled Resource Consumption in Really Simple Security
The Really Simple Security WordPress plugin before 9.8.3 does not validate a client-supplied address value before using it as a storage key in one of its own options, allowing unauthenticated attackers to grow that option without bound and to slow the site's handling of missing pages.
AI Analysis
Technical Summary
CVE-2026-88798 is an uncontrolled resource consumption vulnerability (CWE-400) in the Really Simple Security WordPress plugin prior to version 9.8.3. The flaw arises from the plugin's failure to validate a client-supplied address value before using it as a key in its own option storage. This allows unauthenticated attackers to cause the option to grow without limit, which can slow down the site's processing of missing pages.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to cause the plugin's option storage to grow indefinitely, leading to degraded performance or denial of service conditions when the site handles missing pages. This can slow down the website and potentially affect availability.
Mitigation Recommendations
Upgrade the Really Simple Security plugin to version 9.8.3 or later, where this vulnerability is fixed. No other mitigation guidance is provided. Patch status is confirmed by the version range affected and the fixed version 9.8.3.
CVE-2026-88798: CWE-400 Uncontrolled Resource Consumption in Really Simple Security
Description
The Really Simple Security WordPress plugin before 9.8.3 does not validate a client-supplied address value before using it as a storage key in one of its own options, allowing unauthenticated attackers to grow that option without bound and to slow the site's handling of missing pages.
CVSS v3.1
Score 5.3medium
Affected software
Really Simple Security
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-88798 is an uncontrolled resource consumption vulnerability (CWE-400) in the Really Simple Security WordPress plugin prior to version 9.8.3. The flaw arises from the plugin's failure to validate a client-supplied address value before using it as a key in its own option storage. This allows unauthenticated attackers to cause the option to grow without limit, which can slow down the site's processing of missing pages.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to cause the plugin's option storage to grow indefinitely, leading to degraded performance or denial of service conditions when the site handles missing pages. This can slow down the website and potentially affect availability.
Mitigation Recommendations
Upgrade the Really Simple Security plugin to version 9.8.3 or later, where this vulnerability is fixed. No other mitigation guidance is provided. Patch status is confirmed by the version range affected and the fixed version 9.8.3.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-09-10T08:22:07.339Z
- State
- PUBLISHED
Threat ID: 6aacd5a355bf5e2cf5955f2c
Added to database: 09/18/2026, 06:09:39 UTC
Last enriched: 09/18/2026, 06:17:03 UTC
Last updated: 09/19/2026, 02:32:22 UTC
Views: 12
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