Which versions of PHP are affected by CVE-2026-2221?

A high-severity vulnerability in the Online Reviewer System login component poses a significant risk to user authentication and account security.

Is there a public PoC exploit available for CVE-2026-2221?

Yes, a public proof-of-concept exploit is available for CVE-2026-2221. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-2221?

Within 24 hours: isolate affected Online Reviewer System instances from production environments or restrict network access to authorized users only; inventory all deployments of version 1.0. Within 7 days: implement Web Application Firewall rules to monitor and block suspicious login attempts; enable enhanced logging on authentication functions; conduct security assessment of login functionality. Within 30 days: upgrade to patched version when available; if upgrade unavailable, plan system replacement or decommissioning; perform forensic audit of login logs for signs of exploitation.

PHP CVE-2026-2221

Q: What is the CVSS score of CVE-2026-2221?

CVE-2026-2221 has a CVSS 4.0 base score of 5.5 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

MEDIUM

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (CWE-74)

2026-02-09 cna@vuldb.com

PHP SQLi

5.5

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

HIGH MEDIUM

CVSS changed

Apr 29, 2026 - 01:11 NVD

7.3 (HIGH) 5.5 (MEDIUM)

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 10, 2026 - 14:00 vuln.today

Public exploit code

CVE Published

Feb 09, 2026 - 07:16 nvd

HIGH 7.3

DescriptionCVE.org

A security flaw has been discovered in code-projects Online Reviewer System 1.0. Affected is an unknown function of the file /login/index.php of the component Login. Performing a manipulation of the argument Username results in sql injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks.

AnalysisAI

SQL injection in the login component of code-projects Online Reviewer System 1.0 allows unauthenticated remote attackers to manipulate the Username parameter and execute arbitrary database queries. Public exploit code exists for this vulnerability, which affects PHP-based installations of the Online Reviewer System. …

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Risk assessment & exploitation conditions
Attack chain visualization
Remediation with exact patch versions
Threat intelligence from 22 sources
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Access login page at /login/index.php

Exploit

Inject SQL payload in Username parameter

Execution

Bypass authentication or extract database contents

Impact

Gain unauthorized access to system

Access

Access login page at /login/index.php

Exploit

Inject SQL payload in Username parameter

Execution

Bypass authentication or extract database contents

Impact

Gain unauthorized access to system

Vulnerability AssessmentAI

Exploitation	code-projects Online Reviewer System 1.0 with vulnerable /login/index.php Login component. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 7.3 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A remote attacker could exploit this flaw, sql injection.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: isolate affected Online Reviewer System instances from production environments or restrict network access to authorized users only; inventory all deployments of version 1.0. …

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-2221 vulnerability details – vuln.today

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PHP CVE-2026-2221

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

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Attack ChainAIDerived

Vulnerability AssessmentAI

Recommended ActionAI

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External POC / Exploit Code