CVE-2023-1265Public exploitNetwork attack vector

Account takeover via Grafana cookie forwarding

Published May 3, 2023 · Updated Jan 29, 2025

Session-token disclosure in GitLab allows remote authenticated users to take over accounts through a malicious integrated Grafana data source. Integrated Grafana shares GitLab's origin and forwards the _gitlab_session cookie to an attacker-controlled source when its administrator allowlists it. Exploitation requires Grafana organization-admin access, integrated Grafana to be enabled, and a victim to visit the malicious dashboard.

CVSS severity5.3
Medium
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Session-token disclosure in GitLab allows remote authenticated users to take over accounts through a malicious integrated Grafana data source. Integrated Grafana shares GitLab's origin and forwards the _gitlab_session cookie to an attacker-controlled source when its administrator allowlists it. Exploitation requires Grafana organization-admin access, integrated Grafana to be enabled, and a victim to visit the malicious dashboard.

The record

CVE
CVE-2023-1265
Published
May 3, 2023
Updated
Jan 29, 2025
Vendor
GitLab
Product
GitLab
Classifications
CWE-384, T1539
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 3, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 29, 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=>=11.9, <15.9.6
  2. Affected versionversion=>=15.10, <15.10.5
  3. Affected versionversion=>=15.11, <15.11.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=>=11.9, <15.9.6; version=>=15.10, <15.10.5; version=>=15.11, <15.11.1

Published CVSS scores

4.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N
5.3GitLab Inc.CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-384Session Fixation
T1539Steal Web Session Cookie

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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