CVE-2021-3931Network attack vector

Custom-field modification via CSRF-prone GET routes

Published Nov 13, 2021 · Updated Aug 3, 2024

Cross-site request forgery in Snipe-IT 5.3.1 and earlier allows remote attackers to alter custom-field settings through a victim's browser. Three authenticated custom-field actions use state-changing GET routes that accept field and fieldset identifiers without a CSRF-protected POST form. A victim must hold custom-field management permission and follow a crafted link; the resulting request changes required status or removes a field association.

CVSS severity4.3
Medium
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Cross-site request forgery in Snipe-IT 5.3.1 and earlier allows remote attackers to alter custom-field settings through a victim's browser. Three authenticated custom-field actions use state-changing GET routes that accept field and fieldset identifiers without a CSRF-protected POST form. A victim must hold custom-field management permission and follow a crafted link; the resulting request changes required status or removes a field association.

The record

CVE
CVE-2021-3931
Published
Nov 13, 2021
Updated
Aug 3, 2024
Vendor
Grokability, Inc.
Product
Snipe-IT
Classifications
CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 13, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=unspecified <=5.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Grokability, Inc. · Snipe-ITversion=unspecified <=5.3.1

Published CVSS scores

4.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
4.3[email protected]CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
4.3NVDAV:N/AC:M/Au:N/C:N/I:P/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204.001Malicious Link

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo