CVE-2021-4097

CRLF Injection in phpservermon/phpservermon

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Published Dec 11, 2021 CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed

Description

phpservermon is vulnerable to Improper Neutralization of CRLF Sequences

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

phpservermon

phpservermon/phpservermon

affected

Version	Status	Constraints
`unspecified`	affected	< 3.6.0

Configuration 1 [-]

cpe:2.3:a:phpservermonitor:php_server_monitor:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-2485	phpservermon is vulnerable to Improper Neutralization of CRLF Sequences
Github GHSA	GHSA-8qv8-fq5w-p966	phpservermon is vulnerable to CRLF Injection

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction Required

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.871% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/phpservermon/phpservermon/commit/162bba0046fcda1580f4fbc7b9ababe3c7c13ce4
https://huntr.dev/bounties/d617ced7-be06-4e34-9db0-63d45c003a43

History

Feb 24, 2026 7:00 PM Title updated View changes

Type	Values Removed	Values Added
Title	CRLF Injection in phpservermon/phpservermon	CRLF Injection in phpservermon/phpservermon

Subscriptions

Phpservermonitor Php Server Monitor

Weaknesses

CWE-93

Sources

CVE record Updated: Aug 3, 2024, 5:16 PM

Status: PUBLISHED
Assigner: @huntrdev
Published: Dec 11, 2021, 11:30 PM
Updated: Aug 3, 2024, 5:16 PM
Reserved: Dec 10, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 4:19 AM

Status: Modified
Published: Dec 12, 2021, 12:15 AM
Modified: Jun 17, 2026, 4:19 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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