CVE-2021-39895Public exploitNetwork attack vector

Secret disclosure via active imported pipeline schedules

Published Nov 4, 2021 · Updated Aug 4, 2024

Configuration flaw in GitLab 8.0 through 14.1.6, 14.2.0 through 14.2.4, and 14.3.0 allows attackers to disclose group CI/CD variables. The project importer accepts the active flag from pipeline_schedules.ndjson, so an imported schedule runs attacker-supplied .gitlab-ci.yml with the importer's access. Exploitation requires a group Owner or Maintainer to import an untrusted project and leave its schedule enabled long enough to run; exposed secrets can include group CI/CD variables.

CVSS severity6.0
Medium
EPSS probability1.02%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Configuration flaw in GitLab 8.0 through 14.1.6, 14.2.0 through 14.2.4, and 14.3.0 allows attackers to disclose group CI/CD variables. The project importer accepts the active flag from pipeline_schedules.ndjson, so an imported schedule runs attacker-supplied .gitlab-ci.yml with the importer's access. Exploitation requires a group Owner or Maintainer to import an untrusted project and leave its schedule enabled long enough to run; exposed secrets can include group CI/CD variables.

The record

CVE
CVE-2021-39895
Published
Nov 4, 2021
Updated
Aug 4, 2024
Vendor
GitLab
Product
GitLab
Classifications
CWE-200, T1204.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 4, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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=>=14.2, <14.2.5
  2. Affected versionversion=>=14.3, <14.3.1
  3. Affected versionversion=>=8.0, <14.1.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=>=14.2, <14.2.5; version=>=14.3, <14.3.1; version=>=8.0, <14.1.7

Published CVSS scores

2.1NIST NVDAV:N/AC:H/Au:S/C:P/I:N/A:N
6.0GitLabCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L
4.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/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 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-200Exposure of Sensitive Information to an Unauthorized Actor
T1204.002User Execution Malicious File

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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