Which versions of PHP are affected by CVE-2026-2166?

A high-severity vulnerability in the Online Reviewer System login component (CVE-2026-2166) poses an immediate risk to user authentication and system access control.

Is there a public PoC exploit available for CVE-2026-2166?

Yes, a public proof-of-concept exploit is available for CVE-2026-2166. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-2166?

Within 24 hours: Isolate affected Online Reviewer System instances from production if feasible, enable enhanced logging on login endpoints, and brief incident response team. Within 7 days: Deploy compensating controls (WAF rules blocking suspicious login patterns, IP whitelisting for administrative access), conduct threat assessment on login logs for breach indicators, and establish daily monitoring of CVE-2026-2166. Within 30 days: Evaluate alternative code-projects versions or products without this vulnerability, contact vendor for patch timeline, and develop migration plan if patch remains unavailable.

PHP CVE-2026-2166

Q: What is the CVSS score of CVE-2026-2166?

CVE-2026-2166 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)

2026-02-08 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 - 21:55 vuln.today

PoC Detected

Feb 10, 2026 - 15:12 vuln.today

Public exploit code

CVE Published

Feb 08, 2026 - 17:15 nvd

HIGH 7.3

DescriptionCVE.org

A security vulnerability has been detected in code-projects Online Reviewer System 1.0. The affected element is an unknown function of the file /login/index.php of the component Login. The manipulation of the argument username/password leads to sql injection. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used.

AnalysisAI

SQL injection in the Online Reviewer System 1.0 login function allows unauthenticated remote attackers to manipulate username and password parameters, potentially enabling unauthorized database access and data modification. With public exploit code available and no patch released, this vulnerability poses an immediate risk to deployed instances.

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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

Send crafted SQL payload in username/password field

Exploit

Bypass authentication logic

Execution

Extract database contents

Impact

Modify user records

Access

Send crafted SQL payload in username/password field

Exploit

Bypass authentication logic

Execution

Extract database contents

Impact

Modify user records

Vulnerability AssessmentAI

Exploitation	code-projects Online Reviewer System 1.0 with /login/index.php endpoint exposed to network. … 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 if feasible, enable enhanced logging on login endpoints, and brief incident response team. …

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

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CVE-2026-2166 vulnerability details – vuln.today

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PHP CVE-2026-2166

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