CVE-2026-33762

Application termination via unchecked path-prefix length

Published Mar 31, 2026 · Updated Mar 31, 2026

Improper index validation in go-git before 5.17.1 allows local users to terminate applications via a crafted format-v4 Git index. The format-v4 decoder applies an unvalidated path-name prefix length to the previously decoded path, causing an out-of-bounds slice and runtime panic. Exploitation requires write access to a repository's .git directory, and process termination occurs when the consuming application does not recover from the panic.

CVSS severity2.8
Low
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper index validation in go-git before 5.17.1 allows local users to terminate applications via a crafted format-v4 Git index. The format-v4 decoder applies an unvalidated path-name prefix length to the previously decoded path, causing an out-of-bounds slice and runtime panic. Exploitation requires write access to a repository's .git directory, and process termination occurs when the consuming application does not recover from the panic.

The record

CVE
CVE-2026-33762
Published
Mar 31, 2026
Updated
Mar 31, 2026
Vendor
go-git
Product
go-git
Classifications
CWE-129, T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Mar 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 31, 2026Record 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=< 5.17.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

go-git · go-gitversion=< 5.17.1

Published CVSS scores

2.8GitHubCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

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)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-129Improper Validation of Array Index
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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