CVE-2021-37540Network attack vector

Unspecified widget impact via insufficient CSP

Published Aug 6, 2021 · Updated Aug 4, 2024

Content Security Policy weakness in JetBrains Hub before 2021.1.13262 allows remote attackers to affect deployed widget content. The Widget deployment feature used a potentially insufficient policy, but JetBrains has not disclosed the deficient directive, affected response, or untrusted input path. Network access without authentication or user interaction is sufficient, but the exact confidentiality or integrity consequence remains undisclosed.

CVSS severity6.5
Medium
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Content Security Policy weakness in JetBrains Hub before 2021.1.13262 allows remote attackers to affect deployed widget content. The Widget deployment feature used a potentially insufficient policy, but JetBrains has not disclosed the deficient directive, affected response, or untrusted input path. Network access without authentication or user interaction is sufficient, but the exact confidentiality or integrity consequence remains undisclosed.

The record

CVE
CVE-2021-37540
Published
Aug 6, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 6, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.4NIST NVDAV:N/AC:L/Au:N/C:P/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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

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Your stack

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