CVE-2023-49568Network attack vector

Client resource exhaustion via crafted server replies

Published Jan 12, 2024 · Updated Jun 17, 2025

Denial of service in go-git before 5.11.0 allows remote attackers controlling a Git server to exhaust client resources with crafted replies. The upstream advisory does not identify the reply field, parser, or allocation that consumes resources without an effective bound. Exploitation requires a filesystem-backed go-git client to contact an attacker-controlled or otherwise malicious Git server; memory-only storage is unaffected.

CVSS severity7.5
High
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in go-git before 5.11.0 allows remote attackers controlling a Git server to exhaust client resources with crafted replies. The upstream advisory does not identify the reply field, parser, or allocation that consumes resources without an effective bound. Exploitation requires a filesystem-backed go-git client to contact an attacker-controlled or otherwise malicious Git server; memory-only storage is unaffected.

The record

CVE
CVE-2023-49568
Published
Jan 12, 2024
Updated
Jun 17, 2025
Vendor
go-git
Product
go-git
Classifications
CWE-20, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 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=5.11.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

go-git · go-gitversion=5.11.0

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo