PatchSiren cyber security CVE debrief
CVE-2026-39292 Falco Solutions CVE debrief
CVE-2026-39292 documents an unrestricted file upload vulnerability in Falco Solutions PHPPageBuilder v0.31.0, specifically within the pagemanager/pagebuilder module. The flaw stems from insufficient validation of uploaded file types and executable content, enabling remote attackers to upload arbitrary files and achieve remote code execution. The CVE was published on 2026-05-29 and subsequently modified later the same day. The vulnerability status in NVD is currently marked as Deferred. Two GitHub repositories are cited as references: the original HansSchouten/PHPageBuilder project and a repository by krishnadevpmelevila containing CVE-2026-39292-related materials. No CVSS score, severity rating, or CWE classifications are currently assigned. The vendor attribution remains under review with unknown confidence.
- Vendor
- Falco Solutions
- Product
- PHPPageBuilder
- CVSS
- Unknown
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-05-29
- Original CVE updated
- 2026-05-29
- Advisory published
- 2026-05-29
- Advisory updated
- 2026-05-29
Who should care
Organizations running PHPPageBuilder v0.31.0 or earlier versions; web application security teams; hosting providers offering PHP-based content management solutions; developers maintaining forked or customized versions of PHPPageBuilder
Technical summary
PHPPageBuilder v0.31.0 contains an unrestricted file upload vulnerability in the pagemanager/pagebuilder module. The application fails to adequately validate uploaded file types and executable content, allowing remote attackers to upload arbitrary files. Successful exploitation results in remote code execution on the target system. The vulnerability is remotely exploitable without authentication requirements specified in available data.
Defensive priority
high
Recommended defensive actions
- Review and restrict file upload functionality in PHPPageBuilder pagemanager/pagebuilder module, implementing strict allowlist-based file type validation
- Configure web server to prevent execution of uploaded files in upload directories (e.g., disable PHP execution in upload paths)
- Implement content-type verification and file signature (magic bytes) checking independent of filename extensions
- Apply principle of least privilege to web server process accounts to limit impact of potential code execution
- Monitor for and remove any unauthorized files in web-accessible directories, particularly those with executable extensions
- Consider Web Application Firewall (WAF) rules to detect and block suspicious file upload patterns
- Await vendor security advisory or patch release; verify any updates through official project channels before deployment
Evidence notes
Vulnerability description sourced from official CVE record and NVD entry. Vendor attribution marked as unknown with needsReview flag. No CVSS vector or weakness enumerations available. NVD status: Deferred. Two source references identified: original project repository and CVE-specific repository.
Official resources
2026-05-29