CVE-2026-104026 — HIGH (7.8)

Vulnerability Description

In Sapling SCM prior to v0.2.20260929-102736, control characters were allowed to be embedded in Git subtree URLs. A maliciously constructed repository, if cloned by a target, could trigger code execution on otherwise read-only actions such as sl log/blame/annotate.

CVSS Score

7.8

HIGH

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-150

References

https://www.facebook.com/security/advisories/cve-2026-104026

FAQ

What is CVE-2026-104026?

CVE-2026-104026 is a vulnerability with a CVSS score of 7.8 (HIGH). In Sapling SCM prior to v0.2.20260929-102736, control characters were allowed to be embedded in Git subtree URLs. A maliciously constructed repository, if cloned by a target, could trigger code execut...

How severe is CVE-2026-104026?

CVE-2026-104026 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-104026?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.