CVE-2025-61659

Arbitrary file overwrite via predictable temporary path

Published Sep 29, 2025 · Updated Sep 29, 2025

Insecure temporary-file handling in magicmonty bash-git-prompt 2.6.1 through 2.7.1 allows local users to overwrite files. The createPrivateIndex function copies the Git index to /tmp/git-index-private$$ without exclusive creation, so a preplaced symbolic link redirects cp. A local user who can inspect the victim shell PID and create the link before prompt execution can replace a victim-writable target with Git index contents.

CVSS severity6.8
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insecure temporary-file handling in magicmonty bash-git-prompt 2.6.1 through 2.7.1 allows local users to overwrite files. The createPrivateIndex function copies the Git index to /tmp/git-index-private$$ without exclusive creation, so a preplaced symbolic link redirects cp. A local user who can inspect the victim shell PID and create the link before prompt execution can replace a victim-writable target with Git index contents.

The record

CVE
CVE-2025-61659
Published
Sep 29, 2025
Updated
Sep 29, 2025
Vendor
magicmonty
Product
bash-git-prompt
Classifications
CWE-377, T1565.001
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 29, 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=2.6.1 <=2.7.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

magicmonty · bash-git-promptversion=2.6.1 <=2.7.1

Published CVSS scores

6.8MITRECVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/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.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-377Insecure Temporary File
T1565.001Data Manipulation: Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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