CVE-2026-9694Network attack vector

Support-bot impersonation via email substitutions

Published Jun 11, 2026 · Updated Jun 11, 2026

Improper substitution handling in GitLab allows remote attackers to inject content through crafted Service Desk email replies. Service Desk email template processing fails to neutralize substitution characters before rendering attacker-controlled text as GitLab Support Bot content. Affected releases are 15.9 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2; the reply must reach Service Desk and be rendered by a user.

CVSS severity2.6
Low
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper substitution handling in GitLab allows remote attackers to inject content through crafted Service Desk email replies. Service Desk email template processing fails to neutralize substitution characters before rendering attacker-controlled text as GitLab Support Bot content. Affected releases are 15.9 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2; the reply must reach Service Desk and be rendered by a user.

The record

CVE
CVE-2026-9694
Published
Jun 11, 2026
Updated
Jun 11, 2026
Vendor
GitLab
Product
GitLab
Classifications
CWE-153, T1656
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 11, 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=15.9 <18.10.8
  2. Affected versionversion=18.11 <18.11.5
  3. Affected versionversion=19.0 <19.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GitLab · GitLabversion=15.9 <18.10.8; version=18.11 <18.11.5; version=19.0 <19.0.2

Published CVSS scores

2.6GitLab Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-153Improper Neutralization of Substitution Characters
T1656Impersonation

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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