SourceCodester User Registration and Login System add-user.php cross site scripting

published 2023-12-01 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-58697

cvss: 3.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits: 0; none known

A vulnerability has been found in SourceCodester User Registration and Login System 1.0 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /endpoint/add-user.php. The manipulation of the argument first_name leads to cross site scripting. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-246613 was assigned to this vulnerability.

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/qqisee/vulndis/blob/main/xss_add_user.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
CNA	3.0	3.5	CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
CNA	2.0	4.0	AV:N/AC:L/Au:S/C:N/I:P/A:N
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products

SourceCodester User Registration and Login System

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /qqisee/vulndis/blob/main/xss_add_user.md
exploit, third-party-advisory
vuldb.com /?id.246613
vdb-entry, technical-description, third-party-advisory
vuldb.com /?ctiid.246613
signature, permissions-required, third-party-advisory

Sources

CVE List CVE-2023-6463
NVD CVE-2023-6463

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.

Summary