Out-of-Bounds Read Vulnerability in Janet-lang's Debug Function
CVE-2026-10267

4.8MEDIUM

Key Information:

Vendor

Janet-lang

Status
Janet
Vendor
CVE Published:
1 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-10267?

A security flaw has been identified in Janet-lang's Janet up to version 1.41.0, specifically within the doframe function of src/core/debug.c. This vulnerability allows an attacker to perform an out-of-bounds read, requiring local access to exploit the issue. Publicly available exploits for this vulnerability have been released, underscoring the importance of taking immediate action. A patch addressing this flaw has been implemented as of commit ed17dd2c5913a23fb1107251e44a9410a3c30cf5 to mitigate the risk.

Affected Version(s)

janet 1.0

janet 1.1

janet 1.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-10267 - Proof of Concept

References

https://vuldb.com/vuln/367546
vdb-entrytechnical-description
https://vuldb.com/vuln/367546/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-10267
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

biniam (VulDB User)
.