CVE-2026-86180 Overview
CVE-2026-86180 is a SQL injection vulnerability in code-projects Task Management System In PHP 1.0. The flaw resides in the login functionality of the /index.php file, where the email parameter is passed unsanitized into a SQL query. Remote attackers can manipulate the email argument to inject arbitrary SQL statements without authentication. The exploit details have been publicly disclosed, increasing the likelihood of opportunistic exploitation against exposed installations. The vulnerability is tracked under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component.
Critical Impact
Unauthenticated remote attackers can inject SQL through the login form, potentially bypassing authentication and exposing database contents.
Affected Products
- code-projects Task Management System In PHP 1.0
- Component: Login handler in /index.php
- Parameter: email
Discovery Timeline
- 2026-09-06 - CVE-2026-86180 published to the National Vulnerability Database
- 2026-09-08 - Last updated in NVD database
Technical Details for CVE-2026-86180
Vulnerability Analysis
The vulnerability exists in the login workflow implemented in /index.php. User-supplied input from the email field is concatenated directly into a SQL statement without parameterization or input sanitization. Attackers can inject SQL syntax such as boolean-based or UNION-based payloads to alter query logic. This can enable authentication bypass, extraction of user credentials, and enumeration of database schema. Because the login endpoint is exposed prior to authentication, the attack surface is available to any unauthenticated remote actor who can reach the web application.
Root Cause
The root cause is missing input neutralization on the email POST parameter within the login handler. The application constructs the SQL query using string concatenation instead of prepared statements with bound parameters. This design pattern allows attacker-controlled data to be interpreted as SQL code, matching the [CWE-74] injection class.
Attack Vector
The attack is delivered over the network by submitting a crafted HTTP POST request to /index.php. No privileges or user interaction are required. A typical payload places SQL metacharacters such as single quotes, comments, or OR 1=1 clauses in the email field to short-circuit authentication or exfiltrate data via UNION-based queries. Public disclosure of the exploit path lowers the barrier to reproduction. Additional exploitation details are documented in the GitHub CVE Analysis and VulDB CVE-2026-86180 entries.
Detection Methods for CVE-2026-86180
Indicators of Compromise
- Login requests to /index.php containing SQL metacharacters such as ', --, #, UNION, or OR 1=1 in the email parameter.
- Unusual authentication successes originating from a single IP with malformed email values.
- Database error messages returned to clients or logged during login attempts.
- Spikes in outbound query volume or slow queries tied to the login endpoint.
Detection Strategies
- Deploy web application firewall (WAF) rules that inspect POST bodies to /index.php for SQL injection signatures.
- Enable database query logging and alert on queries originating from the login flow that contain UNION, SLEEP, or tautologies.
- Correlate failed and successful login events for anomalous patterns consistent with injection probing.
Monitoring Recommendations
- Monitor HTTP access logs for repeated POSTs to /index.php with encoded SQL payloads.
- Instrument the application to log the raw email value length and character class distribution for anomaly detection.
- Forward web, WAF, and database telemetry to a centralized analytics platform for cross-source correlation.
How to Mitigate CVE-2026-86180
Immediate Actions Required
- Restrict public exposure of the Task Management System until a fixed release is available, using network ACLs or VPN gating.
- Deploy WAF signatures blocking SQL injection patterns targeting the email parameter on /index.php.
- Rotate application database credentials and audit database user privileges to enforce least privilege.
- Review authentication and database logs for signs of prior exploitation attempts.
Patch Information
No vendor patch is referenced in the published CVE data. Consult the Code Projects Resource Hub and the VulDB Vulnerability Details for updated remediation status. Until a fix ships, operators should apply compensating controls or migrate to a maintained alternative.
Workarounds
- Refactor the login handler to use parameterized queries or prepared statements for the email and password fields.
- Add server-side input validation that restricts the email parameter to RFC 5322 compliant values before query execution.
- Enforce a strict WAF policy in blocking mode and rate-limit authentication attempts by source IP.
- Remove verbose database error output from HTTP responses to reduce information leakage during probing.
# Example WAF rule concept (ModSecurity) blocking SQLi in the email parameter
SecRule ARGS:email "@rx (?i)(\bunion\b|\bselect\b|--|#|\bor\b\s+1=1|sleep\()" \
"id:1008618,phase:2,deny,status:403,log,msg:'CVE-2026-86180 SQLi attempt on email parameter'"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
