CVE-2025-1212Network attack vector

Sensitive header disclosure via Workhorse route confusion

Published Feb 12, 2025 · Updated Feb 12, 2025

Information disclosure in GitLab CE/EE allows remote authenticated users to reveal sensitive data through crafted backend requests. GitLab Workhorse confuses request routes and forwards internal HTTP headers to a backend that exposes them in its response. A low-privileged account and network access are required; the documented impact is disclosure without data modification or service interruption.

CVSS severity4.3
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in GitLab CE/EE allows remote authenticated users to reveal sensitive data through crafted backend requests. GitLab Workhorse confuses request routes and forwards internal HTTP headers to a backend that exposes them in its response. A low-privileged account and network access are required; the documented impact is disclosure without data modification or service interruption.

The record

CVE
CVE-2025-1212
Published
Feb 12, 2025
Updated
Feb 12, 2025
Vendor
GitLab
Product
GitLab
Classifications
CWE-497, CAPEC-694, CAPEC-170, T1082
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2025Record 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=17.7 <17.7.4
  2. Affected versionversion=17.8 <17.8.2
  3. Affected versionversion=8.3 <17.6.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=17.7 <17.7.4; version=17.8 <17.8.2; version=8.3 <17.6.5

Published CVSS scores

4.3GitLab Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-497Exposure of Sensitive System Information to an Unauthorized Control Sphere
CAPEC-694System Location Discovery
CAPEC-170Web Application Fingerprinting
T1082System Information Discovery

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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