CVE-2018-1356 — A reflected Cross-Site-Scripting (XSS) vulnerability in Fortinet FortiSandbox before 3.0 may allow an attacker to execute unauthorized code or commands via the back_url parameter in the file scan component

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MEDIUM

A reflected Cross-Site-Scripting (XSS) vulnerability in Fortinet FortiSandbox before 3.0 may allow an attacker to execute unauthorized code or commands via the back_url parameter in the file scan component

Published Apr 9, 2019

6.1

MEDIUM

CVSS 3.0

EPSS 0.92%

Description

A reflected Cross-Site-Scripting (XSS) vulnerability in Fortinet FortiSandbox before 3.0 may allow an attacker to execute unauthorized code or commands via the back_url parameter in the file scan component.

Affected products

Vendor Fortinet Product FortiSandbox Default
n/a
- Version
  2.4.0
  Status
  affected
  Constraints
  -
- Version
  2.4.1
  Status
  affected
  Constraints
  -
- Version
  2.5.0
  Status
  affected
  Constraints
  -
- Version
  2.5.1
  Status
  affected
  Constraints
  -
- Version
  2.5.2
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Fortinet

FortiSandbox

n/a

Version	Status	Constraints
2.4.0	affected	-
2.4.1	affected	-
2.5.0	affected	-
2.5.1	affected	-
2.5.2	affected	-

Remediation

No remediation recorded yet.

Metrics

0.92% 0.00923

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00923

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (9 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.92% (0.00923)	58.95th	v5 (v2026.06.15)
Sep 20, 2026	0.92% (0.00923)	58.83th	v5 (v2026.06.15)
Jul 20, 2024	0.09% (0.00089)	38.52th	v3 (v2023.03.01)
Jun 26, 2024	0.09% (0.00089)	38.36th	v3 (v2023.03.01)
Mar 7, 2023	0.09% (0.00089)	36.33th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)
Feb 3, 2022	0.62% (0.00624)	17.80th	v5 (v2026.06.15)
Apr 14, 2021	0.62% (0.00624)	0.00th	v1

Weaknesses (1)

CWE-79

Cross-site Scripting (XSS)

References (2)

http://www.securityfocus.com/bid/107838
vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
https://fortiguard.com/advisory/FG-IR-18-024
x_refsource_CONFIRMVendor Advisory

Link	Providers	Tags
http://www.securityfocus.com/bid/107838		vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
https://fortiguard.com/advisory/FG-IR-18-024		x_refsource_CONFIRMVendor Advisory