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Fencer Vulns
medium 6.4

CVE-2020-23831 json

A Reflected Cross-Site Scripting (XSS) vulnerability in the index.php login-portal webpage of SourceCodester Stock Management System v1.0 a…

published 2020-09-01 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-16569

cvss
6.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 58%
public exploits
0
none known

Summary

A Reflected Cross-Site Scripting (XSS) vulnerability in the index.php login-portal webpage of SourceCodester Stock Management System v1.0 allows remote attackers to harvest login credentials and session cookies when an unauthenticated victim clicks on a malicious URL and enters credentials.

Exploit prediction

0.84% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/boku7/StockManagement-XSS-Login-CredHarvester referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com https://packetstormsecurity.com/files/158813/Tailor-MS-1.0-Cross-Site-Scripting.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.4 CVSS:3.1/AC:H/AV:N/A:L/C:H/I:L/PR:N/S:U/UI:R
CNA 3.1 6.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:L
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.