CVE-2024-1816Public exploitNetwork attack vector

Service interruption via OpenAPI filename regex backtracking

Published Jun 26, 2024 · Updated Aug 29, 2024

ReDoS in GitLab CE/EE 12.0 through 16.11.4, 17.0 through 17.0.2, and 17.1.0 allows remote authenticated users to interrupt service. The OpenAPI filename expression in lib/gitlab/file_detector.rb catastrophically backtracks when GraphQL blob handling classifies a crafted repository filename. An attacker must add the filename to a project and repeatedly request its blob metadata, consuming server resources without reading or altering data.

CVSS severity5.3
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

ReDoS in GitLab CE/EE 12.0 through 16.11.4, 17.0 through 17.0.2, and 17.1.0 allows remote authenticated users to interrupt service. The OpenAPI filename expression in lib/gitlab/file_detector.rb catastrophically backtracks when GraphQL blob handling classifies a crafted repository filename. An attacker must add the filename to a project and repeatedly request its blob metadata, consuming server resources without reading or altering data.

The record

CVE
CVE-2024-1816
Published
Jun 26, 2024
Updated
Aug 29, 2024
Vendor
GitLab
Product
GitLab
Classifications
CWE-400, T1499.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 29, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=12.0 <16.11.5
  2. Affected versionversion=17.0 <17.0.3
  3. Affected versionversion=17.1 <17.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=12.0 <16.11.5; version=17.0 <17.0.3; version=17.1 <17.1.1

Published CVSS scores

5.3GitLab Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

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 exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.003Application Exhaustion Flood

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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