A HIGH-severity vulnerability identified as CVE-2026-4540 has been published on March 22, 2026 with a CVSS base score of 7.3. This security advisory provides a detailed breakdown of the vulnerability, its potential impact, weakness classification, and actionable steps to protect your systems.
Vulnerability Details
CVE ID: CVE-2026-4540
Severity: HIGH
CVSS Score: 7.3
Published: March 22, 2026
Weakness (CWE): CWE-74
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Confidentiality Impact | Low |
| Integrity Impact | Low |
| Availability Impact | Low |
Technical Description
A vulnerability was detected in projectworlds Online Notes Sharing System 1.0. This issue affects some unknown processing of the file /login.php of the component Parameters Handler. The manipulation of the argument User results in sql injection. The attack can be executed remotely. The exploit is now public and may be used.
Potential Impact
If exploited, this high-severity vulnerability could allow an attacker to cause significant damage to affected systems. Organizations running affected software should treat this as a priority remediation item.
Recommended Action
No official patch is available yet. Until one is released:
- Monitor the official NVD page and vendor channels for patch announcements.
- Restrict access to the affected system or service where possible.
- Apply network-level mitigations such as firewall rules or WAF policies.
- Enable logging and alerting for anomalous activity related to this vulnerability.
- Review your incident response plan in case of active exploitation.
References
Related Security Advisories
- [HIGH] CVE-2026-25312 — CVSS 7.5 (March 19, 2026) — HIGH / CVSS 7.5
- [HIGH] CVE-2026-25471 — CVSS 8.1 (March 19, 2026) — HIGH / CVSS 8.1
- [HIGH] CVE-2026-22317 — CVSS 7.2 (March 18, 2026) — HIGH / CVSS 7.2
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