How broadly exploitable is this vulnerability?

Any user who is logged in at the time their account is deleted or should otherwise be revoked can continue to use the application via their existing session. The scope includes all roles supported by CI4MS, and the impact scales with the privileges associated to those roles.

What level of access does an attacker need to abuse this behavior?

The attacker only needs a valid account and an active session that was established before the account was deleted or disabled. No additional privilege escalation is required; they simply keep using their existing session while backend administrators believe access has been revoked.

What is the safest general fix pattern for developers?

Implement server-side session revocation and continuous authorization. That typically means checking user state on each request (or at least on each privileged operation), introducing robust session timeouts, and invalidating or rotating sessions whenever account properties change (deletion, lockout, role modification, or password resets).

Severity:

HIGH RISK

(8.8)

Improper Session Invalidation & Access Control (CWE-613, CWE-284) in CI4MS CMS Skeleton

CVE-2026-34570

Published:

Apr 1, 2026

Status:

Modified

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Broken Access Control / Session Management

CWE:

CWE-284;CWE-613;CWE-1254

Impact:

Persistent Unauthorized Access via Non‑Expired Sessions

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Broken Access Control / Session Management

CWE:

CWE-284;CWE-613;CWE-1254

Impact:

Persistent Unauthorized Access via Non‑Expired Sessions

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

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Improper Session Invalidation & Access Control (CWE-613, CWE-284) in CI4MS CMS Skeleton

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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