CVE-2025-21614Network attack vector

Client denial of service via crafted server replies

Published Jan 6, 2025 · Updated Aug 26, 2025

Resource exhaustion in go-git before 5.13.0 allows remote attackers controlling a Git server to interrupt client operations. The project has not disclosed the response field, parser, or unchecked allocation responsible for consuming client resources. Exploitation requires a go-git application to communicate with an attacker-controlled or compromised Git server, after which the crafted reply can exhaust resources and interrupt that client process.

CVSS severity7.5
High
EPSS probability0.72%
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 go-git before 5.13.0 allows remote attackers controlling a Git server to interrupt client operations. The project has not disclosed the response field, parser, or unchecked allocation responsible for consuming client resources. Exploitation requires a go-git application to communicate with an attacker-controlled or compromised Git server, after which the crafted reply can exhaust resources and interrupt that client process.

The record

CVE
CVE-2025-21614
Published
Jan 6, 2025
Updated
Aug 26, 2025
Vendor
go-git
Product
go-git
Classifications
CWE-20, CWE-400, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 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=>= 4.0.0, < 5.13.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

go-git · go-gitversion=>= 4.0.0, < 5.13.0

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-400Uncontrolled Resource Consumption
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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