CRLF Injection in phpservermon/phpservermon
Priority LOW 26CWE-93Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
phpservermon is vulnerable to Improper Neutralization of CRLF Sequences
Why it matters now
EPSS 0.00871 59th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed phpservermon/phpservermon (phpservermon): 3.6.0
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| phpservermon | phpservermon/phpservermon | before 3.6.0 | 3.6.0 | Patch available | CNA |
| — | phpservermon/phpservermon (Packagist) | up to 3.5.2 | — | No fix listed | GHSA-8qv8-fq5w-p966 |
- phpservermon/phpservermon Vendorphpservermon Affected before 3.6.0 Fixed in 3.6.0 Patch available CNA
- phpservermon/phpservermon (Packagist) Vendor— Affected up to 3.5.2 Fixed in — No fix listed GHSA-8qv8-fq5w-p966
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:phpservermonitor:php_server_monitor:*:*:*:*:*:*:*:* | before 3.6.0 | Vulnerable | PHP Server Monitor |
- cpe:2.3:a:phpservermonitor:php_server_monitor:*:*:*:*:*:*:*:* Versions before 3.6.0 Vulnerable ·PHP Server Monitor
Remediation
- Fix · CNA phpservermon/phpservermon (phpservermon) Fixed in 3.6.0
Timeline
- 2026-10-02 Threatist record created from CVE-2021-4097
- 2026-10-03 Alias added: GHSA-8qv8-fq5w-p966
References
More Php Server Monitor vulnerabilities
- TI-2021-03100 phpservermon User.php setUserLoggedIn predictable algorithm in random number generator CVSS 3.1MEDIUM 5.3
- TI-2021-03099 phpservermon User.php generatePasswordResetToken predictable algorithm in random number generator CVSS 3.1MEDIUM 5.3
- TI-2018-13402 PHP Server Monitor before 3.3.2 has CSRF, as demonstrated by a Delete action. CVSS 3.0MEDIUM 6.5
Sources
- CVE-2021-4097 · CVE Program
- CVE-2021-4097 · NVD
- FIRST EPSS
- GHSA-8qv8-fq5w-p966 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences