CVE-2025-7337Public exploitNetwork attack vector

Persistent denial of service via full-blob loading

Published Sep 12, 2025 · Updated Sep 12, 2025

Resource exhaustion in GitLab CE/EE allows remote authenticated users to cause an instance-wide service outage through large file uploads. The /-/edit// endpoint loads an entire repository blob into memory on every request, so concurrent requests exhaust RAM and CPU and crash-loop Puma workers. Developer-level write access to a controlled repository is sufficient; affected releases are 7.8 before 18.1.6, 18.2 before 18.2.6, and 18.3 before 18.3.2.

CVSS severity6.5
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in GitLab CE/EE allows remote authenticated users to cause an instance-wide service outage through large file uploads. The /-/edit// endpoint loads an entire repository blob into memory on every request, so concurrent requests exhaust RAM and CPU and crash-loop Puma workers. Developer-level write access to a controlled repository is sufficient; affected releases are 7.8 before 18.1.6, 18.2 before 18.2.6, and 18.3 before 18.3.2.

The record

CVE
CVE-2025-7337
Published
Sep 12, 2025
Updated
Sep 12, 2025
Vendor
GitLab
Product
GitLab
Classifications
CWE-770, T1499.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 12, 2025Record 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=18.2 <18.2.6
  2. Affected versionversion=18.3 <18.3.2
  3. Affected versionversion=7.8 <18.1.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=18.2 <18.2.6; version=18.3 <18.3.2; version=7.8 <18.1.6

Published CVSS scores

6.5GitLab Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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.

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-770Allocation of Resources Without Limits or Throttling
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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