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Description

A security flaw has been discovered in Browserbase up to 20260526. This impacts an unknown function of the component Autobrowse Trace Artifact Handler. The manipulation results in incorrect default permissions. The attack requires a local approach. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

PUBLISHED Reserved 2026-06-21 | Published 2026-06-21 | Updated 2026-06-21 | Assigner VulDB




MEDIUM: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
LOW: 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
LOW: 3.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
1.7AV:L/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:ND/RC:UR

Problem types

Incorrect Default Permissions

Incorrect Privilege Assignment

Timeline

2026-06-21:Advisory disclosed
2026-06-21:VulDB entry created
2026-06-21:VulDB entry last update

Credits

vaibhavnarkhede (VulDB User) reporter

vaibhavnarkhede (VulDB User) analyst

VulDB CNA Team coordinator

References

vuldb.com/vuln/372613 (VDB-372613 | Browserbase Autobrowse Trace Artifact default permission) vdb-entry

vuldb.com/vuln/372613/cti (VDB-372613 | CTI Indicators (IOB, IOC, TTP)) signature permissions-required

vuldb.com/cve/CVE-2026-12823 (CVE-2026-12823 | CVE Analysis and Report) third-party-advisory

vuldb.com/submit/837600 (Submit #837600 | Browserbase Browserbase Skills latest main branch prior to fix (tested May 2026) Information Disclosure / Insecure File Permissions) third-party-advisory

github.com/...Artifact Insecure File Permissions/Advisory.md exploit

github.com/...race Artifact Insecure File Permissions/poc.sh exploit

cve.org (CVE-2026-12823)

nvd.nist.gov (CVE-2026-12823)

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