CVE-2025-3601Network attack vector

Authenticated denial of service via oversized import responses

Published Aug 27, 2025 · Updated Aug 27, 2025

Resource exhaustion in affected GitLab CE/EE releases allows remote authenticated users to interrupt service through import URLs. The import function processes a submitted URL response without enforcing a resource limit, allowing an excessively large response to consume server resources. A valid account is required; successful requests cause an availability-only denial of service, while GitLab has not disclosed a more specific code locus.

CVSS severity6.5
Medium
EPSS probability0.32%
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 affected GitLab CE/EE releases allows remote authenticated users to interrupt service through import URLs. The import function processes a submitted URL response without enforcing a resource limit, allowing an excessively large response to consume server resources. A valid account is required; successful requests cause an availability-only denial of service, while GitLab has not disclosed a more specific code locus.

The record

CVE
CVE-2025-3601
Published
Aug 27, 2025
Updated
Aug 27, 2025
Vendor
GitLab
Product
GitLab
Classifications
CWE-770, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2025Record 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=18.2 <18.2.5
  2. Affected versionversion=18.3 <18.3.1
  3. Affected versionversion=8.15 <18.1.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=18.2 <18.2.5; version=18.3 <18.3.1; version=8.15 <18.1.5

Published CVSS scores

6.5GitLabCVSS: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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499Endpoint Denial of Service

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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