CVE-2026-86542
CVSS v3
9.1
CRITICAL
EPSS Score
0.7 %
exploit probability, as of 2026-09-28
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
knowns before 0.30.0 fails to validate import names in the import routes, allowing unauthenticated attackers to write files outside the imports directory. Attackers can supply traversal sequences in the name parameter to escape the imports directory and overwrite arbitrary files writable by the server process.
Technical details
- Published
- 2026-09-07
- Last Modified
- 2026-09-08
Frequently asked questions
What is CVE-2026-86542?
knowns before 0.30.0 fails to validate import names in the import routes, allowing unauthenticated attackers to write files outside the imports directory. Attackers can supply traversal sequences in the name parameter to escape the imports directory and overwrite arbitrary files writable by the server process.
Is CVE-2026-86542 actively exploited?
Active exploitation of CVE-2026-86542 has not been confirmed. Its EPSS score was 0.7% on 2026-09-28, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-86542?
CVE-2026-86542 has a CVSS v3 base score of 9.1 (CRITICAL severity).
Is CVE-2026-86542 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 500 free checks/month · Free API key
Other 2026 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).
- CVE-2026-10520KEV
- CVE-2026-24061KEV
- CVE-2026-1281KEV
- CVE-2026-1340KEVUnauthenticated Remote Code Execution via Code Injection in Ivanti Endpoint Manager Mobile
- CVE-2026-41940KEV
- CVE-2026-23760KEVSmarterTools SmarterMail < Build 9511 Authentication Bypass via Password Reset API
- CVE-2026-21643KEVSQL Injection Vulnerability in FortiClientEMS 7.4.4 Allows Unauthenticated Remote Code Execution
- CVE-2026-20182KEV