CVE-2026-76837Network attack vectorHinoki check available

Stored XSS via unescaped mention display name

Published Aug 24, 2026 · Updated Aug 24, 2026

Stored cross-site scripting in Baserow before 2.3.0 allows remote authenticated users to run scripts through rich-text mentions. The mention renderer inserts the stored first_name value into a data-label attribute and element body without HTML encoding, then rich-text fields render the resulting markup. Workspace membership is sufficient, and each member who views a cell mentioning the malicious account executes the persistent payload without a click.

CVSS severityUnavailable
Unscored
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored cross-site scripting in Baserow before 2.3.0 allows remote authenticated users to run scripts through rich-text mentions. The mention renderer inserts the stored first_name value into a data-label attribute and element body without HTML encoding, then rich-text fields render the resulting markup. Workspace membership is sufficient, and each member who views a cell mentioning the malicious account executes the persistent payload without a click.

The record

CVE
CVE-2026-76837
Published
Aug 24, 2026
Updated
Aug 24, 2026
Vendor
Baserow
Product
Baserow
Classifications
T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 24, 2026Record 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=0 <2.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Baserow · Baserowversion=0 <2.3.0

Published CVSS scores

No CVSS assessment is available in this record.

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.

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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

T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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