CVE-2026-34411Public exploitNetwork attack vector

Unauthenticated configuration disclosure via management APIs

Published Mar 27, 2026 · Updated Mar 27, 2026

Missing authentication in Appsmith before 1.98.0 allows remote attackers to read instance configuration through management APIs. These endpoints return internal application-performance data without authenticating the requester, including license details, feature flags, identity-provider settings, and an unsalted admin-domain hash. Network access to the self-hosted instance is sufficient; the disclosure supports organization identification and targeted reconnaissance but not data modification or service interruption.

CVSS severity6.9
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Appsmith before 1.98.0 allows remote attackers to read instance configuration through management APIs. These endpoints return internal application-performance data without authenticating the requester, including license details, feature flags, identity-provider settings, and an unsalted admin-domain hash. Network access to the self-hosted instance is sufficient; the disclosure supports organization identification and targeted reconnaissance but not data modification or service interruption.

The record

CVE
CVE-2026-34411
Published
Mar 27, 2026
Updated
Mar 27, 2026
Vendor
Appsmith
Product
Appsmith
Classifications
CWE-200, CWE-306, T1592.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 2026Record 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=0 <1.98.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Appsmith · Appsmithversion=0 <1.98.0

Published CVSS scores

6.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
5.3VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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 exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-306Missing Authentication for Critical Function
T1592.002Gather Victim Host Information: Software

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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