Is this vulnerability remotely exploitable?

Yes. An attacker who can reach the public-link endpoints (for example, over the internet in a typical deployment) may be able to exploit the flawed scope enforcement without direct access to the link creator's account.

What level of access does an attacker need?

The attacker generally needs access to a public link or the ability to interact with the public-link interface. They do not need the creator's credentials; the vulnerability lies in how the system uses the public link to resolve authorization.

What is the safest general fix pattern?

The most robust fix is to ensure that every operation executed in the context of a public link is strictly bound to the link's scope and permissions, with no implicit escalation to the full privileges of the link creator. Centralizing and reusing a well-tested authorization policy for public links helps avoid inconsistencies.

Severity:

HIGH RISK

(8.2)

Authorization Bypass via Improper Access Control (CWE-863) in REVA GRPC Public Link Middleware

CVE-2026-23989

Published:

Feb 6, 2026

Status:

Analyzed

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:

Authorization Bypass / Improper Access Control

CWE:

CWE-863

Impact:

Privilege Escalation and Unauthorized Data Access

Severity:

HIGH RISK

(8.2)

CVSS Version:

3.1

Vulnerability Type

Category:

Authorization Bypass / Improper Access Control

CWE:

CWE-863

Impact:

Privilege Escalation and Unauthorized Data Access

Severity:

HIGH RISK

(8.2)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Authorization Bypass via Improper Access Control (CWE-863) in REVA GRPC Public Link Middleware

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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