Is there a public PoC exploit available for CVE-2026-5543?

Yes, a public proof-of-concept exploit is available for CVE-2026-5543. Prioritise patching immediately. EPSS: 0.0%.

PHP CVE-2026-5543

Q: What is the CVSS score of CVE-2026-5543?

CVE-2026-5543 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-2026-19036 LOW

SQL Injection (CWE-89)

2026-04-05 VulDB

GHSA-xhx8-v4wm-937m

PHP SQLi

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

Apr 07, 2026 - 13:20 vuln.today

Public exploit code

EUVD ID Assigned

Apr 05, 2026 - 04:45 euvd

EUVD-2026-19036

Analysis Generated

Apr 05, 2026 - 04:45 vuln.today

CVE Published

Apr 05, 2026 - 04:30 nvd

MEDIUM 5.3

DescriptionCVE.org

A vulnerability was identified in PHPGurukul User Registration & Login and User Management System 3.3. The affected element is an unknown function of the file /admin/yesterday-reg-users.php. The manipulation of the argument ID leads to sql injection. Remote exploitation of the attack is possible. The exploit is publicly available and might be used.

AnalysisAI

SQL injection in PHPGurukul User Registration & Login and User Management System 3.3 allows authenticated remote attackers to execute arbitrary SQL queries via the ID parameter in /admin/yesterday-reg-users.php, potentially leading to unauthorized data access, modification, or deletion. Publicly available exploit code exists; CVSS 6.3 reflects moderate impact with low attack complexity and authenticated access requirement.

Unlock full vulnerability intelligence

Risk assessment & exploitation conditions
Attack chain visualization
Remediation with exact patch versions
Threat intelligence from 22 sources
Personal watchlist & email alerts

Continue with Google Continue with GitHub

Free forever · No credit card required

Vulnerability AssessmentAI

Risk Assessment	This vulnerability presents moderate but actionable risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An authenticated admin user or an attacker with stolen admin credentials logs into the application and navigates to /admin/yesterday-reg-users.php. The attacker injects a SQL payload such as '1 OR '1'='1' or a UNION-based query into the ID parameter, which is passed unsanitized to the database backend. …
Remediation	Immediate patching is required; contact PHPGurukul via phpgurukul.com for the latest patched version of User Registration & Login and User Management System. … Detailed patch versions, workarounds, and compensating controls in full report.

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

More from same product – last 7 days

CVE-2026-49952 CRITICAL Act Now POC

9.3 Jun 15

Authentication bypass in Discuz! X5.0 releases 20260320 through 20260501 allows unauthenticated remote attackers to acce

CVE-2026-49954 HIGH This Week POC

8.6 Jun 15

Authenticated remote code execution in Discuz! X5.0 releases 20260320 through 20260501 allows administrators to chain a

CVE-2026-49768 CRITICAL Act Now

9.8 Jun 15

Unauthenticated PHP Object Injection in the Happyforms WordPress plugin (versions <= 1.26.13) allows remote attackers to

CVE-2026-27053 CRITICAL Act Now

9.8 Jun 15

Unauthenticated PHP Object Injection in the Broadcast Live Video WordPress plugin (versions prior to 7.1.3) allows remot

CVE-2026-49104 CRITICAL Act Now

9.8 Jun 15

Unauthenticated PHP object injection in the WordPress plugin 'Integration for Keap/Infusionsoft and Contact Form 7, WPFo

CVE-2026-5543 vulnerability details – vuln.today

Back

PHP CVE-2026-5543

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Unlock full vulnerability intelligence

Vulnerability AssessmentAI

More from same product – last 7 days

Share

External POC / Exploit Code