CVE-2022-20001

Code execution via malicious Git repository configuration

Published Mar 14, 2022 · Updated Apr 23, 2025

Command injection in fish 3.1.0 through 3.3.1 allows local users to execute arbitrary code through a malicious Git repository. The default fish_git_prompt function automatically invokes Git when entering a repository, and Git honors its per-repository core.fsmonitor command. Execution requires a user to change into an attacker-controlled directory, and repositories created by git clone are not affected by this trigger.

CVSS severity7.8
High
EPSS probability1.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in fish 3.1.0 through 3.3.1 allows local users to execute arbitrary code through a malicious Git repository. The default fish_git_prompt function automatically invokes Git when entering a repository, and Git honors its per-repository core.fsmonitor command. Execution requires a user to change into an attacker-controlled directory, and repositories created by git clone are not affected by this trigger.

The record

CVE
CVE-2022-20001
Published
Mar 14, 2022
Updated
Apr 23, 2025
Vendor
fish-shell
Product
fish
Classifications
CWE-427, CWE-74, T1204.002, T1059.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 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=>= 3.1.0, < 3.4.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

fish-shell · fishversion=>= 3.1.0, < 3.4.0

Published CVSS scores

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
7.8GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-427Uncontrolled Search Path Element
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1204.002User Execution: Malicious File
T1059.004Command and Scripting Interpreter: Unix Shell

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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