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PHP CVE-2026-5812

| EUVD-2026-20803 LOW
Business Logic Errors (CWE-840)
2026-04-08 cna@vuldb.com GHSA-rxwr-mqgv-rc55
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:N/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:N/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
X

Lifecycle Timeline

6
Severity Changed
Apr 29, 2026 - 01:11 NVD
MEDIUM LOW
CVSS changed
Apr 29, 2026 - 01:11 NVD
5.3 (MEDIUM) 2.1 (LOW)
EUVD ID Assigned
Apr 08, 2026 - 23:24 euvd
EUVD-2026-20803
Analysis Generated
Apr 08, 2026 - 23:24 vuln.today
CVE Published
Apr 08, 2026 - 23:17 nvd
MEDIUM 5.3
PoC Detected
Apr 08, 2026 - 23:17 vuln.today
Public exploit code

DescriptionCVE.org

A security flaw has been discovered in SourceCodester Pharmacy Product Management System 1.0. This affects an unknown part of the file add-sales.php of the component POST Parameter Handler. Performing a manipulation of the argument txtqty results in business logic errors. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.

AnalysisAI

Unauthenticated remote attackers can manipulate the txtqty POST parameter in SourceCodester Pharmacy Product Management System 1.0's add-sales.php to trigger business logic errors and cause data integrity violations. The vulnerability affects an unknown component of the POST parameter handler and allows modification of sales quantity values, resulting in integrity and availability impacts. …

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Vulnerability AssessmentAI

Risk Assessment This vulnerability presents moderate real-world risk despite its 5.3 CVSS score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An authenticated user (e.g., pharmacy staff with sales entry privileges) could submit a crafted HTTP POST request to add-sales.php with a negative or excessively large value in the txtqty parameter, causing the system to record invalid quantity transactions. For example, submitting txtqty=-100 or txtqty=999999 would bypass client-side controls and server-side validation, resulting in inventory records falling below zero or exceeding physical stock limits. …
Remediation Apply immediate input validation to the txtqty parameter in add-sales.php to enforce non-negative integer values, maximum quantity limits based on inventory availability, and reject submissions containing leading zeros or special characters. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-5812 vulnerability details – vuln.today

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