| Component | Langflow |
| Severity | low (CVSS 3.5) |
| CVSS vector | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| Published (NVD) | 2024-09-27 |
| Last modified | 2026-06-17 |
| Affected versions | langflow <= 1.0.18 |
| Fixed in | see the vendor advisory |
| Weakness | CWE-1333 |
| CISA KEV | not listed |
NVD description
A vulnerability classified as problematic was found in Langflow up to 1.0.18. Affected by this vulnerability is an unknown functionality of the file \src\backend\base\langflow\interface\utils.py of the component HTTP POST Request Handler. The manipulation of the argument remaining_text leads to inefficient regular expression complexity. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
What to do
- NVD lists no fixed version yet: follow the vendor advisory below and keep Langflow off the public internet until a fix ships.
- Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2024-9277
- https://rumbling-slice-eb0.notion.site/Remote-Redos-in-https-github-com-langflow-ai-langflow-067159ced0d5494e91b06071384969c4?pvs=4
- https://vuldb.com/?id.278659
- https://vuldb.com/?submit.410043
- https://vuldb.com/?ctiid.278659
Read more
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