Is this vulnerability remotely exploitable?

Yes. The affected oauth2.php endpoint is unauthenticated, and an attacker with network access to the application can send crafted requests to trigger deserialization, provided they can reference or influence the targeted serialized access_token data.

Does an attacker need valid credentials to exploit this?

No user authentication is required for the vulnerable endpoint itself. However, practical exploitation may depend on whether an attacker can create or modify OAuth2 records or otherwise cause controlled serialized data to be present in the `zz_oauth2` table.

What is the safest general fix pattern?

The safest pattern is to remove reliance on PHP's `unserialize()` for user-influenced or indirectly controlled data and replace it with safer, data-only formats like JSON. Where deserialization is truly necessary, enforce strict class whitelisting and ensure that only benign, data-only structures are ever deserialized.

Severity:

HIGH RISK

(7.2)

PHP Unsafe Deserialization (CWE-502) in OpenSTAManager OAuth2 Endpoint

CVE-2026-29782

Published:

Apr 2, 2026

Status:

Undergoing Analysis

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:

Unsafe Deserialization

CWE:

CWE-502

Impact:

Remote Code Execution and Application Compromise

Severity:

HIGH RISK

(7.2)

CVSS Version:

3.1

Vulnerability Type

Category:

Unsafe Deserialization

CWE:

CWE-502

Impact:

Remote Code Execution and Application Compromise

Severity:

HIGH RISK

(7.2)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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Ask AI for summary of CodeAnt

PHP Unsafe Deserialization (CWE-502) in OpenSTAManager OAuth2 Endpoint

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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