Is this vulnerability remotely exploitable?

Yes. If the Piwigo instance is reachable over the network, an unauthenticated remote user can query the `pwg.history.search` API and obtain browsing history data.

What level of access does an attacker need?

Only basic network access to the Piwigo API is required. No user account, session, or prior authentication is needed to exploit the missing authorization on this endpoint.

What is the safest general fix pattern?

Apply strict authorization to the `pwg.history.search` method, limiting it to trusted roles (such as administrators), and ensure that all similar endpoints explicitly declare and enforce their access requirements via a centralized authorization mechanism.

Severity:

HIGH RISK

(7.5)

Missing Authorization (CWE-862) in Piwigo pwg.history.search API Exposes User Browsing History

CVE-2026-27833

Published:

Apr 3, 2026

Status:

Received

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:

Missing Authorization

CWE:

CWE-862

Impact:

Unauthorized Access to Sensitive User Activity Data

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Missing Authorization

CWE:

CWE-862

Impact:

Unauthorized Access to Sensitive User Activity Data

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

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355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Missing Authorization (CWE-862) in Piwigo pwg.history.search API Exposes User Browsing History

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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