CVE-2021-24388Public exploitNetwork attack vector

Stored XSS via forged custom-field update

Published Jul 6, 2021 · Updated Aug 3, 2024

Stored XSS in E4J s.r.l. VikRentCar before 1.1.7 allows remote attackers to execute script in an administrator's browser via CSRF. The custom-field update action accepts a field name without a CSRF check and later outputs it without sanitization or escaping. An administrator must submit the forged request and then visit a page that renders the field, exposing that session's accessible data and actions.

CVSS severity5.4
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in E4J s.r.l. VikRentCar before 1.1.7 allows remote attackers to execute script in an administrator's browser via CSRF. The custom-field update action accepts a field name without a CSRF check and later outputs it without sanitization or escaping. An administrator must submit the forged request and then visit a page that renders the field, exposing that session's accessible data and actions.

The record

CVE
CVE-2021-24388
Published
Jul 6, 2021
Updated
Aug 3, 2024
Vendor
E4J s.r.l.
Product
VikRentCar
Classifications
CWE-79, CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 6, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.1.7 <1.1.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

E4J s.r.l. · VikRentCarversion=1.1.7 <1.1.7

Published CVSS scores

3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-352Cross-Site Request Forgery (CSRF)
T1204.001User Execution: Malicious Link

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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