Which versions of PHP are affected by CVE-2026-4836?

Organizations using A vulnerability should be aware of moderate risk from CVE-2026-4836, a SQL injection vulnerability rated CVSS 5.3.

Is there a public PoC exploit available for CVE-2026-4836?

Yes, a public proof-of-concept exploit is available for CVE-2026-4836. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-4836?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Validate input sanitization for user-controlled parameters.

PHP CVE-2026-4836

Q: What is the CVSS score of CVE-2026-4836?

CVE-2026-4836 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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%.

EUVD-2026-16081 LOW

SQL Injection (CWE-89)

2026-03-26 VulDB

GHSA-2x9h-r46q-gf7w

SQLi PHP

2.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

2.1 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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:L/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

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

5.3 (MEDIUM) 2.1 (LOW)

PoC Detected

Mar 30, 2026 - 13:26 vuln.today

Public exploit code

EUVD ID Assigned

Mar 26, 2026 - 02:30 euvd

EUVD-2026-16081

Analysis Generated

Mar 26, 2026 - 02:30 vuln.today

CVE Published

Mar 26, 2026 - 01:52 nvd

MEDIUM 5.3

DescriptionCVE.org

A vulnerability was detected in code-projects Accounting System 1.0. The affected element is an unknown function of the file /my_account/delete.php. Performing a manipulation of the argument cos_id results in sql injection. It is possible to initiate the attack remotely. The exploit is now public and may be used.

AnalysisAI

SQL injection in code-projects Accounting System 1.0 allows authenticated remote attackers to execute arbitrary SQL commands via the cos_id parameter in /my_account/delete.php. Public exploit code exists for this vulnerability, enabling potential unauthorized database access and manipulation. …

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Risk assessment & exploitation conditions
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Vulnerability AssessmentAI

Risk Assessment	While the CVSS 3.1 score of 6.3 (Medium) reflects the requirement for authenticated access (PR:L) and limited immediate confidentiality/integrity impact (C:L/I:L/A:L), this score underestimates real-world risk when combined with supporting intelligence. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker with valid accounting system credentials (obtained through phishing or credential reuse) logs into the application and navigates to the account deletion feature. Instead of submitting a legitimate cos_id value, the attacker crafts a malicious SQL injection payload in the cos_id parameter (e.g., cos_id=1' OR SLEEP(5)--), which causes the application to pause for 5 seconds if the injection succeeds. …
Remediation	Immediately patch code-projects Accounting System to the latest available version released by the vendor, which should include input validation and parameterized query fixes. … Detailed patch versions, workarounds, and compensating controls in full report.

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Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

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

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CVE-2026-4836 vulnerability details – vuln.today

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PHP CVE-2026-4836

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

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Recommended ActionAI

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External POC / Exploit Code