CVE-2026-27834 Piwigo CVE debrief

Who should care

Users of Piwigo photo gallery application, especially those with administrative access, should be aware of this vulnerability and take immediate action to update to version 16.3.0 or apply necessary patches. System administrators and security teams should review the vulnerability details and assess their exposure.

Technical summary

The pwg.users.getList Web Service API method in Piwigo is vulnerable to SQL Injection. The filter parameter is directly concatenated into a SQL query without proper sanitization, allowing authenticated administrators to execute arbitrary SQL commands. This issue has been patched in version 16.3.0. Users should review and restrict access to the pwg.users.getList Web Service API method. Monitoring for suspicious activity on the Piwigo application is also recommended.

Defensive priority

High priority should be given to updating Piwigo to version 16.3.0 or applying necessary patches. Administrators should also review and restrict access to the pwg.users.getList Web Service API method. Monitoring for suspicious activity on the Piwigo application is recommended. Compensating controls, such as restricting access to the API method, should be considered while remediation is scheduled and verified. Asset inventory and vulnerability management teams should track exceptions and retest remediated assets. Source tracking and logging should be reviewed to detect potential exploitation attempts. Rollback/change windows should be planned for patch deployment. Security teams should verify patch application and review system logs for suspicious activity. The vulnerability has a high impact on systems with administrative access, and defenders should verify patch application and review system logs for suspicious activity. The vulnerability allows authenticated administrators to execute arbitrary SQL commands, which could lead to data breaches or system compromise. Therefore, it is essential to prioritize patching and monitoring to prevent potential attacks. The NVD entry is currently Analyzed, and the CVE record was published on 2026-04-03T22:16:26.013Z and last modified on 2026-07-24T22:10:00.140Z. Evidence limits suggest verifying patch application and reviewing system logs for suspicious activity. The vulnerability affects Piwigo's pwg.users.getList Web Service API method, allowing authenticated administrators to execute arbitrary SQL commands due to improper sanitization of the filter parameter. Evidence limits suggest verifying patch application and reviewing system logs for suspicious activity. The vulnerability has a high impact on systems with administrative access, and defenders should verify patch application and review system logs for suspicious activity. The vulnerability allows authenticated administrators to execute arbitrary SQL commands, which could lead to data breaches or system compromise. Therefore, it is essential to prioritize patching and monitoring to prevent potential attacks. The NVD entry is currently Analyzed, and the CVE record was 7

Recommended defensive actions

• Update Piwigo to version 16.3.0 or later
• Restrict access to the pwg.users.getList Web Service API method
• Monitor for suspicious activity on the Piwigo application
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Track exceptions and retest remediated assets
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record was published on 2026-04-03T22:16:26.013Z and was last modified on 2026-07-24T22:10:00.140Z. The NVD entry is currently Analyzed. The vulnerability affects Piwigo's pwg.users.getList Web Service API method, allowing authenticated administrators to execute arbitrary SQL commands due to improper sanitization of the filter parameter. Evidence limits suggest verifying patch application and reviewing system logs for suspicious activity.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.