CVE-2026-54829: WP Photo Album Plus SQL Injection Vulnerability (v9.1.13.005)

Technical summary

CVE-2026-54829 is a blind SQL injection flaw (CWE-89) in WP Photo Album Plus stemming from improper neutralization of special characters in SQL commands. The vulnerability permits unauthenticated attackers to craft malicious input that alters database query logic, allowing information disclosure. The CVSS 3.1 score of 7.5 (HIGH) reflects network-accessible exploitation, reasonable attack complexity, and significant confidentiality impact paired with minor availability risk across trust boundaries.

Business impact

This vulnerability enables unauthorized database reconnaissance and extraction of sensitive WordPress data—user credentials, email addresses, plugin configurations, and potentially customer records. For sites hosting customer data or using WP Photo Album Plus in production environments, successful exploitation could lead to data breaches, regulatory exposure (GDPR, CCPA), and reputational damage. The blind SQL injection nature means attackers can operate stealthily over time without obvious application errors.

Affected systems

WP Photo Album Plus versions up to and including 9.1.13.005 are vulnerable. The plugin author is Jacob N. Breetvelt. Organizations running affected versions on WordPress installations—particularly those exposed to untrusted networks or handling sensitive data—face direct risk. Site administrators should verify their deployed version and check for available patches from the vendor.

Exploitability

This vulnerability requires network access but no authentication or user interaction, making it accessible to unauthenticated attackers. Attack complexity is rated as high, suggesting some environmental factors or timing requirements complicate exploitation—possibly related to query structure or application logic. However, blind SQL injection tools and techniques are well-documented and relatively mature, so exploitation is practical for competent threat actors once environmental nuances are understood.

Remediation

Patch WP Photo Album Plus to a version later than 9.1.13.005 as provided by the vendor. Simultaneously, implement input validation and parameterized queries throughout the plugin codebase to prevent SQL injection. WordPress site administrators should prioritize this update given the network-accessible and unauthenticated nature of the attack vector. If immediate patching is unavailable, restrict access to the plugin's input endpoints via Web Application Firewall rules or .htaccess while awaiting patches.

Patch guidance

Verify availability of a patched version from Jacob N. Breetvelt or the official WP Photo Album Plus repository (WordPress.org plugin directory). Deploy updates in a staging environment first to confirm compatibility with other plugins and themes. After patching, clear any cached versions and monitor application logs for exploitation attempts prior to the update. Organizations unable to patch immediately should escalate to risk management and consider disabling the plugin temporarily if business logic permits.

Detection guidance

Monitor for SQL injection payloads in web access logs targeting the plugin's vulnerable input points—look for patterns like single quotes, SQL keywords (UNION, SELECT, OR, AND), time-based delays, and conditional logic in HTTP parameters. Web Application Firewall rules targeting SQL injection (such as ModSecurity CRS rules) should flag suspicious queries. Database query logging may reveal unusual SELECT queries or authentication-related probes. Blind SQL injection often manifests as repeated, similar requests with minor variations, so baseline normal traffic and alert on deviations.

Why prioritize this

This vulnerability merits immediate attention due to its HIGH CVSS score, unauthenticated network-accessible attack surface, and direct impact on data confidentiality. Blind SQL injection is stealthier than reflected injection, reducing detection likelihood. Organizations running WP Photo Album Plus on public-facing sites should patch urgently. Those with sensitive customer or business data are at heightened risk and should treat this as a critical priority.

Risk score, explained

The CVSS 3.1 score of 7.5 reflects: network accessibility (AV:N) and no privilege requirement (PR:N) increasing exploitability; reasonable attack complexity (AC:H) due to environmental factors; high confidentiality impact (C:H) from database disclosure; minimal integrity/availability impact (I:N/A:L); and scope change (S:C) indicating cross-trust-boundary compromise. The high confidentiality impact and borderless scope elevate severity despite attack complexity constraints.

Frequently asked questions