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Vulnerability Details :

CVE-2026-9694

Summary
Assigner-GitLab
Assigner Org ID-ceab7361-8a18-47b1-92ba-4d7d25f6715a
Published At-11 Jun, 2026 | 10:19
Updated At-11 Jun, 2026 | 12:38
Rejected At-
Credits

Improper Neutralization of Substitution Characters in GitLab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.9 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions, could have allowed an unauthenticated user to impersonate the GitLab Support Bot and inject arbitrary content via a specially crafted Service Desk email reply due to improper neutralization in email template processing.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
â–¼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitLab
Assigner Org ID:ceab7361-8a18-47b1-92ba-4d7d25f6715a
Published At:11 Jun, 2026 | 10:19
Updated At:11 Jun, 2026 | 12:38
Rejected At:
â–¼CVE Numbering Authority (CNA)
Improper Neutralization of Substitution Characters in GitLab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.9 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions, could have allowed an unauthenticated user to impersonate the GitLab Support Bot and inject arbitrary content via a specially crafted Service Desk email reply due to improper neutralization in email template processing.

Affected Products
Vendor
GitLab Inc.GitLab
Product
GitLab
Repo
git://git@gitlab.com:gitlab-org/gitlab.git
CPEs
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Default Status
unaffected
Versions
Affected
  • From 15.9 before 18.10.8 (semver)
  • From 18.11 before 18.11.5 (semver)
  • From 19.0 before 19.0.2 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-153CWE-153: Improper Neutralization of Substitution Characters
Type: CWE
CWE ID: CWE-153
Description: CWE-153: Improper Neutralization of Substitution Characters
Metrics
VersionBase scoreBase severityVector
3.12.6LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
Version: 3.1
Base score: 2.6
Base severity: LOW
Vector:
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Upgrade to versions 18.10.8, 18.11.5, 19.0.2 or above.

Configurations

Workarounds

Exploits

Credits

finder
Thanks [3nvz](https://hackerone.com/3nvz) for reporting this vulnerability through our HackerOne bug bounty program
Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://gitlab.com/gitlab-org/gitlab/-/work_items/601330
N/A
https://hackerone.com/reports/3685720
technical-description
exploit
permissions-required
https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/
N/A
Hyperlink: https://gitlab.com/gitlab-org/gitlab/-/work_items/601330
Resource: N/A
Hyperlink: https://hackerone.com/reports/3685720
Resource:
technical-description
exploit
permissions-required
Hyperlink: https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/
Resource: N/A
â–¼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
â–¼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cve@gitlab.com
Published At:11 Jun, 2026 | 12:16
Updated At:11 Jun, 2026 | 17:32

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.9 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions, could have allowed an unauthenticated user to impersonate the GitLab Support Bot and inject arbitrary content via a specially crafted Service Desk email reply due to improper neutralization in email template processing.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.12.6LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
Primary3.14.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Type: Secondary
Version: 3.1
Base score: 2.6
Base severity: LOW
Vector:
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
Type: Primary
Version: 3.1
Base score: 4.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CPE Matches

GitLab Inc.
gitlab
>>gitlab>>Versions from 15.9.0(inclusive) to 18.10.8(exclusive)
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
GitLab Inc.
gitlab
>>gitlab>>Versions from 15.9.0(inclusive) to 18.10.8(exclusive)
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
GitLab Inc.
gitlab
>>gitlab>>Versions from 18.11.0(inclusive) to 18.11.5(exclusive)
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
GitLab Inc.
gitlab
>>gitlab>>Versions from 18.11.0(inclusive) to 18.11.5(exclusive)
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
GitLab Inc.
gitlab
>>gitlab>>Versions from 19.0.0(inclusive) to 19.0.2(exclusive)
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
GitLab Inc.
gitlab
>>gitlab>>Versions from 19.0.0(inclusive) to 19.0.2(exclusive)
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
Weaknesses
CWE IDTypeSource
CWE-153Primarycve@gitlab.com
CWE ID: CWE-153
Type: Primary
Source: cve@gitlab.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/cve@gitlab.com
Release Notes
https://gitlab.com/gitlab-org/gitlab/-/work_items/601330cve@gitlab.com
Issue Tracking
https://hackerone.com/reports/3685720cve@gitlab.com
Permissions Required
Hyperlink: https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/
Source: cve@gitlab.com
Resource:
Release Notes
Hyperlink: https://gitlab.com/gitlab-org/gitlab/-/work_items/601330
Source: cve@gitlab.com
Resource:
Issue Tracking
Hyperlink: https://hackerone.com/reports/3685720
Source: cve@gitlab.com
Resource:
Permissions Required

Change History

0
Information is not available yet

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Action-Not Available
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Assigner-GitLab Inc.
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Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
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Action-Not Available
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Matching Score-8
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Known To Be Used In Ransomware Campaigns?-Not Available
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Action-Not Available
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Matching Score-8
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Known To Be Used In Ransomware Campaigns?-Not Available
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Known To Be Used In Ransomware Campaigns?-Not Available
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Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

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Matching Score-8
Assigner-GitLab Inc.
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Matching Score-8
Assigner-GitLab Inc.
CVSS Score-3.1||LOW
EPSS-5.92% / 90.82%
||
7 Day CHG+1.95%
Published-07 Jun, 2023 | 00:00
Updated-07 Jan, 2025 | 17:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') in GitLab

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Action-Not Available
Vendor-GitLab Inc.
Product-gitlabGitLab
CWE ID-CWE-113
Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
Details not found