CVE-2019-19255Network attack vector

Project activity disclosure via stale Todo recipients

Published Jan 3, 2020 · Updated Aug 5, 2024

Incorrect access control in GitLab EE 12.3 through 12.5 allows remote authenticated users removed from a project to receive its Todos. Under specific circumstances, Todo recipient selection fails to exclude former project members after project access is revoked. A valid account and prior project membership are required, and the bounded consequence is disclosure of project activity represented by those notifications.

CVSS severity4.3
Medium
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect access control in GitLab EE 12.3 through 12.5 allows remote authenticated users removed from a project to receive its Todos. Under specific circumstances, Todo recipient selection fails to exclude former project members after project access is revoked. A valid account and prior project membership are required, and the bounded consequence is disclosure of project activity represented by those notifications.

The record

CVE
CVE-2019-19255
Published
Jan 3, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1213.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 3, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3UbuntuCVSS:3.1/AV:N/AC:L/PR:L/UI:N/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.

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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

T1213.003Data from Information Repositories: Code Repositories

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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