Vulnerability · Published Apr 20, 2026 · Assigned by VulDB

CVE-2026-6597langflow-ai langflow Flow Using API core.py has_api_terms credentials storage

Low 2.7

In plain English

A low-severity security flaw in langflow from langflow-ai. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).

Severity (CVSS 3.1)2.7Low

Exploit odds (30 days)0.4%top 67.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A weakness has been identified in langflow-ai langflow up to 1.8.3. Impacted is the function remove_api_keys/has_api_terms of the file src/backend/base/langflow/api/utils/core.py of the component Flow Using API. This manipulation causes unprotected storage of credentials. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	langflow	no fix listed	GHSA-5jjf-wcvf-923w
PyPI	langflow	no fix listed	PYSEC-2026-2565

Affected products (as reported)

Vendor	Product	Versions
langflow-ai	langflow	1.8.01.8.11.8.21.8.3

Weakness: CWE-256, CWE-255 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R

References

VDB-358232 | langflow-ai langflow Flow Using API core.py has_api_terms credentials storage vdb-entry, technical-description
VDB-358232 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #791920 | Langflow <= 1.8.3 Information Disclosure third-party-advisory
https://gist.github.com/chenhouser2025/b93261c6e651f14800a4f2e4365f357b exploit