CVE-2021-3938Network attack vector

Browser script execution via unescaped asset tag

Published Nov 13, 2021 · Updated Aug 3, 2024

Cross-site scripting in Snipe-IT 5.3.1 and earlier allows remote authenticated users to run script via a crafted asset tag. The bulk asset-audit error path in AssetsController concatenates the asset_tag request value into its JSON message without HTML escaping. A logged-in user must submit a nonexistent tag and induce another user to render the returned message, exposing that user's session context.

CVSS severity5.4
Medium
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Snipe-IT 5.3.1 and earlier allows remote authenticated users to run script via a crafted asset tag. The bulk asset-audit error path in AssetsController concatenates the asset_tag request value into its JSON message without HTML escaping. A logged-in user must submit a nonexistent tag and induce another user to render the returned message, exposing that user's session context.

The record

CVE
CVE-2021-3938
Published
Nov 13, 2021
Updated
Aug 3, 2024
Vendor
Grokability, Inc.
Product
Snipe-IT
Classifications
CWE-79, CAPEC-63, T1203
Attack vector
network
Privileges
authenticated

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

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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=unspecified <=5.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

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

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.9huntr.devCVSS:3.0/AV:L/AC:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-63Cross-Site Scripting (XSS)
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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