CVE-2019-12434Public exploitNetwork attack vector

Private project discovery via comment-link URL contrast

Published Mar 10, 2020 · Updated Aug 4, 2024

Information disclosure in GitLab CE and EE 10.6 through 11.11 allows remote authenticated users to discover private project URL slugs. When a crafted issue link is placed in a comment, the rendered destination changes for an existing private project but remains unchanged for a nonexistent project. Any logged-in user who can post a comment and guess a group and project name can use that link-destination oracle to confirm only that the private project exists.

CVSS severity4.3
Medium
EPSS probability0.75%
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 and EE 10.6 through 11.11 allows remote authenticated users to discover private project URL slugs. When a crafted issue link is placed in a comment, the rendered destination changes for an existing private project but remains unchanged for a nonexistent project. Any logged-in user who can post a comment and guess a group and project name can use that link-destination oracle to confirm only that the private project exists.

The record

CVE
CVE-2019-12434
Published
Mar 10, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-330
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 10, 2020CVE 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

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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

4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
4.3NIST NVDCVSS: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.

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-330Use of Insufficiently Random Values

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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