CVE-2026-12823

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 5.7% of scored records. A rank, not a probability.

NVD base score

1.9 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-07-03.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-06-21 23:45Z2 MO AGO

Last updated

2026-07-03 04:05Z2 MO AGO

Reserved

2026-06-21

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 4.8)

CNA CVSS vector

CVSS: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

Weaknesses

• CWE-266Incorrect Privilege AssignmentBase
• CWE-276Incorrect Default PermissionsBase

Data version

5.2

Document digest

af57a4037972b795dd9b7f1b20a4a5ceb1e814302558119d348199a5a27b69a7

• vuldb.comVDB-372613 | Browserbase Skills Autobrowse Trace Artifact default permissionhttps://vuldb.com/vuln/372613vdb-entry
• vuldb.comVDB-372613 | CTI Indicators (IOB, IOC, TTP)https://vuldb.com/vuln/372613/ctisignaturepermissions-required
• vuldb.comCVE-2026-12823 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-12823third-party-advisory
• vuldb.comSubmit #837600 | Browserbase Browserbase Skills latest main branch prior to fix (tested May 2026) Information Disclosure / Insecure File Permissionshttps://vuldb.com/submit/837600third-party-advisory
• github.comhttps://github.com/NARKHEDE-VAIBHAV/poc/blob/main/CVE-2026-12823%20-%20Browserbase%20Skills%20Autobrowse%20Trace%20Artifact%20Insecure%20File%20Permissions/Advisory.mdexploit
• github.comhttps://github.com/NARKHEDE-VAIBHAV/poc/blob/main/CVE-2026-12823%20-%20Browserbase%20Skills%20Autobrowse%20Trace%20Artifact%20Insecure%20File%20Permissions/poc.shexploit