CWE-602: Client-Side Enforcement of Server-Side Security (CVE-2026-59504)
CVE-2026-59504 is a critical vulnerability classified under CWE-602, involving client-side enforcement of security controls that should be enforced server-side. This flaw allows an attacker to bypass intended server-side security mechanisms by manipulating client-side controls. The vulnerability has a CVSS 3.1 score of 9.1, indicating high impact on confidentiality and integrity without requiring privileges or user interaction. No affected software versions or vendor patches are currently specified. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
This vulnerability, identified as CVE-2026-59504 and categorized under CWE-602, arises when security controls intended to be enforced on the server are instead enforced on the client side. This misplacement allows attackers to circumvent server-side security by manipulating client-side enforcement mechanisms. The CVSS 3.1 base score of 9.1 reflects a network attack vector with low attack complexity, no privileges required, no user interaction, and high confidentiality and integrity impacts. No specific affected software versions or patch information is provided in the available data.
Potential Impact
The vulnerability can lead to unauthorized access or modification of sensitive data due to bypassing server-side security controls. Confidentiality and integrity are rated as high impact, while availability is not affected. This could result in significant security breaches if exploited.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should review their applications to ensure that all critical security controls are enforced server-side rather than relying on client-side enforcement.
CWE-602: Client-Side Enforcement of Server-Side Security (CVE-2026-59504)
Description
CVE-2026-59504 is a critical vulnerability classified under CWE-602, involving client-side enforcement of security controls that should be enforced server-side. This flaw allows an attacker to bypass intended server-side security mechanisms by manipulating client-side controls. The vulnerability has a CVSS 3.1 score of 9.1, indicating high impact on confidentiality and integrity without requiring privileges or user interaction. No affected software versions or vendor patches are currently specified. There are no known exploits in the wild at this time.
CVSS v3.1
Score 9.1critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CVE-2026-59504 and categorized under CWE-602, arises when security controls intended to be enforced on the server are instead enforced on the client side. This misplacement allows attackers to circumvent server-side security by manipulating client-side enforcement mechanisms. The CVSS 3.1 base score of 9.1 reflects a network attack vector with low attack complexity, no privileges required, no user interaction, and high confidentiality and integrity impacts. No specific affected software versions or patch information is provided in the available data.
Potential Impact
The vulnerability can lead to unauthorized access or modification of sensitive data due to bypassing server-side security controls. Confidentiality and integrity are rated as high impact, while availability is not affected. This could result in significant security breaches if exploited.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should review their applications to ensure that all critical security controls are enforced server-side rather than relying on client-side enforcement.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-2wv9-fhg5-594v
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-59504"]
- Ecosystems
- []
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
Threat ID: 6a7e037bbf8831d5398fa3d9
Added to database: 08/13/2026, 17:48:43 UTC
Last enriched: 08/13/2026, 18:17:09 UTC
Last updated: 08/13/2026, 21:40:59 UTC
Views: 5
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