CVE-2026-27834

HighPublic PoC

Published: 03 April 2026

Published

03 April 2026

Modified

09 April 2026

KEV Added

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Patch

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CVSS Score 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0004 13.4th percentile

Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-27834 is a high-severity SQL Injection (CWE-89) vulnerability in Piwigo Piwigo. Its CVSS base score is 7.2 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 13.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190). What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match

prevent

Directly mitigates SQL injection by requiring validation and sanitization of the filter parameter before concatenation into SQL queries in the pwg.users.getList API method.

SI-2 Flaw Remediation good match

prevent

Ensures timely remediation of the specific SQL injection flaw through patching to Piwigo version 16.3.0 or later.

RA-5 Vulnerability Monitoring and Scanning partial match

detect

Enables detection of SQL injection vulnerabilities like CVE-2026-27834 through regular vulnerability scanning of the web application.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

Why these techniques?

SQL injection in Piwigo's remotely accessible pwg.users.getList Web Service API method directly enables T1190 (Exploit Public-Facing Application) by allowing arbitrary SQL execution with no user interaction.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

Piwigo is an open source photo gallery application for the web. Prior to version 16.3.0, a SQL Injection vulnerability exists in the pwg.users.getList Web Service API method. 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.

Deeper analysisAI

CVE-2026-27834 is a SQL injection vulnerability (CWE-89) in Piwigo, an open-source photo gallery web application. It affects versions prior to 16.3.0 and resides in the pwg.users.getList Web Service API method, where the filter parameter is directly concatenated into a SQL query without proper sanitization.

Authenticated administrators can exploit this vulnerability remotely with low attack complexity and no user interaction required. Successful exploitation allows execution of arbitrary SQL commands, resulting in high impacts to confidentiality, integrity, and availability, as reflected in its CVSS v3.1 base score of 7.2 (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

The issue has been addressed in Piwigo version 16.3.0. Official mitigation guidance in the GitHub security advisory (GHSA-5jwg-cr5q-vjq2), the patching commit (9df471f16243371dc3725c5262e1632d23c8218a), and release notes at piwigo.org/release-16.3.0 recommends upgrading to the fixed version.