CVE-2026-5027 EXPLOIT
8.8
HIGH · CVSS 3.1 · EPSS 4.8% (pctl 92)
Patch early
A public exploit exists.
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 ('../').
Scoring
| CVSS | 8.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 4.76% — more likely to be exploited than 92% of all CVEs |
| Weakness | CWE-22 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2026-03-27 |
| Last modified | 2026-08-18 |
Affected (1)
| Vendor | Product |
|---|---|
| langflow | langflow |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Langflow 1.8.4 - Path Traversal to Remote Code Execution | 2026-08-31 |
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