CVE-2023-6195Public exploitNetwork attack vector

Internal HTTP response disclosure via prefix validation

Published Jan 30, 2025 · Updated Feb 18, 2025

SSRF in GitLab CE/EE 15.5 through 16.9.6, 16.10 through 16.10.4, and 16.11 through 16.11.1 allows attackers to read internal HTTP responses. The GitHub Markdown attachment importer checks only whether an image URL starts with its trusted CDN string, so a suffix domain passes and followed redirects reach private endpoints. Exploitation requires permission to add an issue to the imported GitHub repository, a user-initiated attachment import, and the non-default local-request setting.

CVSS severity2.6
Low
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in GitLab CE/EE 15.5 through 16.9.6, 16.10 through 16.10.4, and 16.11 through 16.11.1 allows attackers to read internal HTTP responses. The GitHub Markdown attachment importer checks only whether an image URL starts with its trusted CDN string, so a suffix domain passes and followed redirects reach private endpoints. Exploitation requires permission to add an issue to the imported GitHub repository, a user-initiated attachment import, and the non-default local-request setting.

The record

CVE
CVE-2023-6195
Published
Jan 30, 2025
Updated
Feb 18, 2025
Vendor
GitLab
Product
GitLab
Classifications
CWE-918, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 18, 2025Record 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=15.5 <16.9.7
  2. Affected versionversion=16.10 <16.10.5
  3. Affected versionversion=16.11 <16.11.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=15.5 <16.9.7; version=16.10 <16.10.5; version=16.11 <16.11.2

Published CVSS scores

4.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
2.6GitLab Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:R/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

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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