A improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiDeceptor 5.3.0, Forti…

published 2025-01-15 21 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-35559

cvss: 5.4; 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 22%
public exploits: 0; none known

A improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiDeceptor 5.3.0, FortiDeceptor 5.2.0, FortiDeceptor 5.1 all versions, FortiDeceptor 5.0 all versions, FortiDeceptor 4.3 all versions, FortiDeceptor 4.2 all versions, FortiDeceptor 4.1 all versions, FortiDeceptor 4.0 all versions, FortiDeceptor 3.3 all versions, FortiDeceptor 3.2 all versions, FortiDeceptor 3.1 all versions, FortiDeceptor 3.0 all versions may allow an attacker to perform a reflected cross-site scripting attack in the recovery endpoints

Patch / fix

fixed in 1

fortinet fortideceptor 5.2.1

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 21 mo ago (2025-01-15)

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:U/RC:C
CNA	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

Fortinet FortiDeceptor

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

Technology feeds

Fortinet rss critical rss

References

fortiguard.fortinet.com /psirt/FG-IR-24-010
vendor-advisory

Sources

CVE List CVE-2024-35280
NVD CVE-2024-35280

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Summary