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CVE-2026-30575

A Business Logic vulnerability exists in SourceCodester Pharmacy Product Management System 1.0 in the add-stock.php file. The application fails to validate the "txtqty" parameter during stock entry, allowing negative values to be processed. This causes the system to decrease the inventory level instead of increasing it, leading to inventory corruption and potential Denial of Service by depleting stock records.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d63cb1171f93c41eb9ffbaa25bcd5fca81576398138a8305612e8e7299878e1a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-20","description":"CWE-20 Improper Input Validation","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f8d50681784fd3636a0c32aedaabeac2f81aae196272cf27ec536883e1dd66f6 · sha256:dfcf3884e5950921… · /containers/adp/0/problemTypes/1/descriptions/0

{"cweId":"CWE-1284","description":"CWE-1284 Improper Validation of Specified Quantity in Input","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f8d50681784fd3636a0c32aedaabeac2f81aae196272cf27ec536883e1dd66f6 · sha256:dfcf3884e5950921… · /containers/adp/0/problemTypes/0/descriptions/0

{"description":"n/a","lang":"en","type":"text"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f8d50681784fd3636a0c32aedaabeac2f81aae196272cf27ec536883e1dd66f6 · sha256:dfcf3884e5950921… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f8d50681784fd3636a0c32aedaabeac2f81aae196272cf27ec536883e1dd66f6 · sha256:dfcf3884e5950921… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f8d50681784fd3636a0c32aedaabeac2f81aae196272cf27ec536883e1dd66f6 · sha256:dfcf3884e5950921… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-20","description":"CWE-20 Improper Input Validation","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f8d50681784fd3636a0c32aedaabeac2f81aae196272cf27ec536883e1dd66f6 · sha256:dfcf3884e5950921… · /containers/adp/0/problemTypes/1/descriptions/0
{"cweId":"CWE-1284","description":"CWE-1284 Improper Validation of Specified Quantity in Input","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f8d50681784fd3636a0c32aedaabeac2f81aae196272cf27ec536883e1dd66f6 · sha256:dfcf3884e5950921… · /containers/adp/0/problemTypes/0/descriptions/0
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f8d50681784fd3636a0c32aedaabeac2f81aae196272cf27ec536883e1dd66f6 · sha256:dfcf3884e5950921… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"url":"https://github.com/meifukun/Web-Security-PoCs/blob/main/Pharmacy-Product-Management-System/Logic-AddStock-NegativeQty.md"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f8d50681784fd3636a0c32aedaabeac2f81aae196272cf27ec536883e1dd66f6 · sha256:dfcf3884e5950921… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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