Insecure File Permissions in Browserbase Autobrowse Component
CVE-2026-12823

4.8MEDIUM

Key Information:

Vendor

Browserbase

Status
Browserbase
Vendor
CVE Published:
21 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-12823?

A significant security flaw has been identified in the Autobrowse Trace Artifact Handler component of Browserbase, affecting versions prior to 20260526. The issue involves incorrect default permissions, which could potentially allow unauthorized access or manipulation of sensitive files. This vulnerability requires local access for exploitation, making it crucial for users with this software to address the permissions settings immediately. Unfortunately, attempts to notify the vendor regarding this vulnerability have gone unanswered, increasing the urgency for users to monitor and secure their systems against possible attacks that utilize this flaw.

Affected Version(s)

Browserbase 20260526

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-2026-12823 - Proof of Concept

CVE-2026-12823 - Proof of Concept

References

https://vuldb.com/vuln/372613
vdb-entry
https://vuldb.com/vuln/372613/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-12823
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

vaibhavnarkhede (VulDB User)
vaibhavnarkhede (VulDB User)
VulDB CNA Team
.