---
title: "CVE-2026-104026: Sapling SCM - Command Injection"
description: "Sapling SCM < 0.2.20260929-102736 contains a command injection caused by control characters embedded in Git subtree URLs, letting attackers trigger code execution during read-only actions, exploit requires cloning a malicious repository."
url: https://panop.io/threat-heartbeat/CVE-2026-104026/
---

# CVE-2026-104026 Sapling SCM - Command Injection

Sapling SCM < 0.2.20260929-102736 contains a command injection caused by control characters embedded in Git subtree URLs, letting attackers trigger code execution during read-only actions, exploit requires cloning a malicious repository.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.13% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-104026)

## Details

Type

Command Injection

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Published

2 October 2026

Updated

15 October 2026

Weakness

[CWE-150](https://cwe.mitre.org/data/definitions/150.html)

## Vendor fix

Update to version 0.2.20260929-102736 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-104026](https://nvd.nist.gov/vuln/detail/CVE-2026-104026)
- [https://www.facebook.com/security/advisories/cve-2026-104026](https://www.facebook.com/security/advisories/cve-2026-104026)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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