Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1000 CNY

100.0%
Buy Us a Coffee

CVE-2026-42084— OpenC3 COSMOS: Hijacked session token can be used to reset password for persistence

CVSS 8.1 · High EPSS 0.03% · P8
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-42084

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
OpenC3 COSMOS: Hijacked session token can be used to reset password for persistence
Source: NVD (National Vulnerability Database)
Vulnerability Description
OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to versions 6.10.5 and 7.0.0-rc3, the OpenC3 password change functionality allows a user to change their password without providing the old password, by accepting a valid session token instead. In assumed breach scenarios, this behaviour can be exploited by an attacker who has already obtained a valid session token, to gain persistence in hijacked account (including admin) and prevent legitimate users from accessing the account. This issue has been patched in versions 6.10.5 and 7.0.0-rc3.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
未经验证的口令修改
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
OpenC3cosmos < 6.10.5 -

II. Public POCs for CVE-2026-42084

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-42084

Please Login to view more intelligence information

Same Patch Batch · OpenC3 · 2026-05-04 · 5 CVEs total

CVE-2026-420879.6 CRITICALOpenC3 COSMOS: SQL Injection in QuestDB Time-Series Data Base
CVE-2026-420889.6 CRITICALOpenC3 COSMOS: Administrative Actions via the Script Runner Tool
CVE-2026-420864.6 MEDIUMOpenC3 COSMOS: Self-XSS in the Command Sender
CVE-2026-420854.3 MEDIUMOpenC3 COSMOS: Arbitrary write to plugins directory via path-traversed config filenames

IV. Related Vulnerabilities

Same product: cosmos
Same vendor: OpenC3
Same weakness: CWE-620

V. Comments for CVE-2026-42084

No comments yet

Leave a comment