CVE-2026-11515: Hard-Coded Password in Barangay Resident System 1.0

Technical summary

CVE-2026-11515 involves improper password reset logic in the password_reset.php component of the Barangay Resident Profiling and Information Management System. When a password reset is requested with a new_password argument containing specific input (such as 'password123'), the system falls back to or accepts a hard-coded password instead of processing the user-supplied value. This stems from weak credential storage and validation practices (CWE-255, CWE-259). The vulnerability is remotely exploitable without requiring prior authentication or user interaction.

Business impact

Unauthorized access to resident records represents a significant data protection and privacy risk. Personnel managing the system could have their accounts compromised, leading to potential modification of resident profiles, exposure of sensitive information, or disruption of municipal services. For municipalities using this system, the integrity of resident databases and service continuity are at stake. If resident data is linked to benefits, licensing, or vital services, compromise could affect service delivery and create regulatory compliance issues.

Affected systems

SourceCodester Barangay Resident Profiling and Information Management System version 1.0 is affected. The vulnerability is specific to this application and version. Users of other versions should verify their deployment versions against the vendor's security advisories.

Exploitability

This vulnerability has a CVSS 3.1 score of 5.3 (Medium severity) with a network attack vector, low attack complexity, and no privilege or user interaction required. The public disclosure of this flaw means exploit tooling or proof-of-concept code may be available or under development. The straightforward nature of the password reset handler logic makes this practically exploitable by individuals with basic web application attack knowledge.

Remediation

Obtain and deploy a patched version of SourceCodester Barangay Resident Profiling and Information Management System from the vendor. Until patching is possible, implement compensating controls such as network segmentation to restrict access to the password reset endpoint, strong rate limiting on password reset requests, and monitoring for suspicious password reset activity. Review access logs for any evidence of prior exploitation.

Patch guidance

Contact SourceCodester or check their official support portal for security updates addressing CVE-2026-11515. Verify the patch version against the vendor advisory before deployment. Implement patches in a test environment first to ensure compatibility with your municipal deployment. Given the remote exploitability and public disclosure, prioritize patching within your change management window.

Detection guidance

Monitor logs for repeated or suspicious access to the password_reset.php endpoint, particularly requests with unusual parameter values or from unexpected origins. Look for rapid password reset requests that correlate with subsequent failed or successful login attempts. Implement Web Application Firewall (WAF) rules to detect and alert on multiple password reset attempts within a short timeframe. Review password change audit logs for accounts that were reset to default or suspicious values.

Why prioritize this

Although this vulnerability carries a Medium CVSS score, the combination of remote exploitability, public disclosure, lack of authentication requirements, and potential for account takeover warrants relatively high prioritization. The exposure of resident data and service disruption risk elevates it beyond the base CVSS assessment for municipal systems handling sensitive records.

Risk score, explained

The CVSS 3.1 score of 5.3 reflects a network-accessible vulnerability with low attack complexity and no privilege or user interaction barrier, resulting in confidentiality being unaffected but integrity being compromised. The Medium severity is driven by the integrity impact (password reset to attacker-controlled values). However, contextual factors such as public disclosure, the sensitivity of resident data, and the criticality of identity and access management in government systems warrant consideration for elevated internal risk ratings.

Frequently asked questions