CVE-2026-7299Public exploitNetwork attack vector

Stored XSS via unsafe SQL autocomplete rendering

Published Jun 2, 2026 · Updated Jun 2, 2026

Stored XSS in Appsmith before 2.1 allows remote authenticated users to execute JavaScript in other workspace members’ sessions via database object names. The SQL hint renderer assigns unsanitized table and column names to innerHTML, causing the browser to parse stored names as executable markup. Exploitation requires Developer access, DDL rights on a shared PostgreSQL datasource, and another member to trigger autocomplete; resulting script access can hijack that member’s session.

CVSS severity5.4
Medium
EPSS probability0.34%
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 Appsmith before 2.1 allows remote authenticated users to execute JavaScript in other workspace members’ sessions via database object names. The SQL hint renderer assigns unsanitized table and column names to innerHTML, causing the browser to parse stored names as executable markup. Exploitation requires Developer access, DDL rights on a shared PostgreSQL datasource, and another member to trigger autocomplete; resulting script access can hijack that member’s session.

The record

CVE
CVE-2026-7299
Published
Jun 2, 2026
Updated
Jun 2, 2026
Vendor
Appsmith
Product
Appsmith
Classifications
CWE-79, T1539
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 2, 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 <2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Appsmith · Appsmithversion=0 <2.1

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
6.3CERT/CCCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1539Steal Web Session Cookie

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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