VulnerabilityAnalyzed
CVE-2026-5027
The 'POST /api/v2/files' endpoint does not sanitize the 'filename' parameter from the multipart form data, allowing an attacker to write files to arbitrary locations on the filesystem using path traversal sequences ('../').
HIGH 8.8EPSS 36.1%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 36.1%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
The 'POST /api/v2/files' endpoint does not sanitize the 'filename' parameter from the multipart form data, allowing an attacker to write files to arbitrary locations on the filesystem using path traversal sequences ('../').
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 36.14% probability · 98th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- langflow/langflow
- Source
- vulnreport@tenable.com
References
- https://www.tenable.com/security/research/tra-2026-26Vendor Advisory, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.