CVE-2026-34837Network attack vector

Context data disclosure via unchecked AI prompt authorization

Published Apr 8, 2026 · Updated Apr 8, 2026

Missing authorization in Zammad 7.0.0 allows remote authenticated users to expose inaccessible context data through AI text tools. The POST /api/v1/ai_assistance/text_tools/:id endpoint adds referenced group or organization data to an AI prompt without checking the current user's access. Reachability requires ticket.agent permission; the bounded impact is disclosure of otherwise unauthorized context through the AI interaction.

CVSS severity5.3
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Zammad 7.0.0 allows remote authenticated users to expose inaccessible context data through AI text tools. The POST /api/v1/ai_assistance/text_tools/:id endpoint adds referenced group or organization data to an AI prompt without checking the current user's access. Reachability requires ticket.agent permission; the bounded impact is disclosure of otherwise unauthorized context through the AI interaction.

The record

CVE
CVE-2026-34837
Published
Apr 8, 2026
Updated
Apr 8, 2026
Vendor
Zammad
Product
Zammad
Classifications
CWE-862, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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=>= 7.0.0, < 7.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zammad · Zammadversion=>= 7.0.0, < 7.0.1

Published CVSS scores

5.3GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA: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-862Missing Authorization
T1213Data from Information Repositories

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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