Remote code execution in alextselegidis/easyappointments

published 2025-02-12 20 mo ago modified 2026-06-17 4 mo ago also GHSA-3wf7-83q3-948c , EUVD-2024-53638

cvss: 6.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits: 0; none known

Cross Site Scripting vulnerability in Alex Tselegidis EasyAppointments v.1.5.0 allows a remote attacker to execute arbitrary code via the legal_settings parameter.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 20 mo ago (2025-02-14)

Exploit prediction

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

hkohi.ca https://hkohi.ca/vulnerability/13 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
GitHub	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	alextselegidis/easyappointments	<=1.5.0	no fix listed

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation
CWE-94 Improper Control of Generation of Code

References

hkohi.ca /vulnerability/13
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2024-57601
advisory
github.com /alextselegidis/easyappointments
package

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.

Summary