A reflected cross-site scripting (XSS) vulnerability in MyNET up to v26.08 allows attackers to execute arbitrary code in the context of a u…

published 2025-12-24 10 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-55359

cvss: 6.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 18%
public exploits: 0; none known

A reflected cross-site scripting (XSS) vulnerability in MyNET up to v26.08 allows attackers to execute arbitrary code in the context of a user's browser via injecting a crafted payload into the parameter HTTP.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 10 mo ago (2025-12-24)

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

miguelsantareno.github.io https://miguelsantareno.github.io/airc_exploit.txt 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

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

miguelsantareno.github.io /airc_exploit.txt
exploit, third-party-advisory
airc.pt /solucoes-servicos/solucoes?segment=MYN
product

Sources

CVE List CVE-2024-40317
NVD CVE-2024-40317

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