Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
-
AccessGain MITM position on victim's network
-
DeliveryVictim initiates password reset
-
ExploitReset link sent over cleartext HTTP
-
ExecutionSniff and capture reset token
-
PersistReplay token to set new password
-
ImpactHijack victim account
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A04:2025 - Cryptographic Failures
ASVS 5.0
V12 - Secure Communication Transport encryption
|
| Exploitation Conditions | Exploitation requires the attacker to occupy a man-in-the-middle position on the same network segment as the victim (e.g., shared public Wi-Fi) AND the victim to actively initiate a password reset and open/transmit the resulting http:// link over that untrusted network during the token's validity window. Limiting factors: no attack is possible without a live network-interception vantage point; if the victim's traffic path is otherwise encrypted (VPN) or the reset is performed on a trusted network, interception fails; the token is single-use and time-limited, so the attacker must capture and replay it before the victim completes their own reset. This is not exploitable against a victim who never triggers a reset, and it is not a remote unauthenticated attack against a default configuration. |
| Impact | The signals are consistent and point to a real but conditional risk rather than a mass-exploitation event. The vendor CVSS 4.0 base score is 7.5, but its own metrics acknowledge the friction: AC:H (high complexity) and AT:P (a specific attack requirement - the attacker must hold a man-in-the-middle position) with UI:A (victim must actively perform a reset and open the link over an untrusted network). SSVC aligns with this: Exploitation=PoC (not active), Automatable=No (each attack requires a live MITM opportunity against a specific user), yet Technical Impact=Total (full account takeover). EPSS of 0.03% and the absence of any KEV listing reinforce that this is not a wormable or widely exploited issue. One nuance to flag: the 'Authentication Bypass' tag overstates the flaw - this is credential/token interception requiring a privileged network position, not a direct auth bypass. Net: patch it as good hygiene, but it is not a drop-everything emergency for most deployments. |
| Exploit ScenarioDerived | A victim on public airport Wi-Fi requests a password reset for their Flowise account and receives an email whose link uses http://. An attacker on the same network passively sniffs the traffic (or performs an active MITM), captures the reset token as it is transmitted in cleartext, and replays it to set a new password and take over the account. A public proof-of-concept demonstrating the insecure HTTP link is documented in HackerOne report #1888915. |
Get an e-mail when this CVE is exploited, patched or re-scored. Free account.
Alert meAnalysisAIv1 – Jul 24, 2026
Cleartext transmission of password reset links in Flowise (via cloud.flowiseai.com) prior to version 3.1.0 allows a network-positioned man-in-the-middle attacker to intercept the reset token and hijack a victim's account. The reset email embeds the link over plain HTTP instead of HTTPS, so anyone sharing the victim's network (e.g., public Wi-Fi) can sniff the token during a reset flow. Publicly available exploit code exists (HackerOne report #1888915), but EPSS is very low (0.03%, 10th percentile) and there is no evidence of active exploitation.
RemediationAI
Vendor-released patch: 3.1.0 - upgrade Flowise to 3.1.0 or later (npm package flowise 3.1.0), which generates password reset links over HTTPS; see GHSA-x5w6-38gp-mrqh. For self-hosted operators who cannot immediately upgrade, terminate TLS in front of Flowise and configure the application/base URL to use https:// so reset links are emitted as HTTPS, and enable HTTP Strict Transport Security (HSTS) to block protocol downgrade - the trade-off is that HSTS requires a valid certificate on the mail-link domain and can break any legacy plain-HTTP access. As an operational compensating control, keep reset-token lifetimes short and invalidate tokens on first use to shrink the interception window; users on untrusted networks should avoid initiating password resets until patched. Users of cloud.flowiseai.com are covered by the vendor's fix and need take no action.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in npm
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Flowise is an open-source drag-and-drop builder for large-language-model (LLM) workflows; the affected component is the hosted cloud offering at cloud.flowiseai.com and the underlying npm package 'flowise' (CPE cpe:2.3:a:flowiseai:flowise). The root cause is CWE-319 (Cleartext Transmission of Sensitive Information): the account-recovery subsystem generates the forgot-password link with an http:// scheme rather than https://, so the single-use reset token traverses the wire unencrypted. Because password reset tokens are bearer credentials, any exposure of the token in cleartext is equivalent to exposing the credential itself. Best-practice mitigations that were absent include forcing HTTPS on all sensitive links and enforcing HSTS to prevent protocol downgrade.
Know when Flowise gets its next vulnerability
- Watch products and get an email when something new is published
- Check this CVE against your own stack and servers
- Exploit and PoC references, threat intelligence from 22 sources
No credit card · 7-day full trial
Severity by source
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
AV:A and AC:H because exploitation needs an adjacent-network MITM position; UI:R since the victim must initiate a reset and open the link; C:H/I:H for account takeover, A:N as availability is not directly impacted.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
4DescriptionCVE.org
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the password reset functionality on cloud.flowiseai.com sends a reset password link over the unsecured HTTP protocol instead of HTTPS. This behavior introduces the risk of a man-in-the-middle (MITM) attack, where an attacker on the same network as the user (e.g., public Wi-Fi) can intercept the reset link and gain unauthorized access to the victim’s account. This vulnerability is fixed in 3.1.0.
Executive ViewAI
Flowise versions prior to 3.1.0 fail to encrypt password reset links, creating an account takeover risk for users on shared networks such as public Wi-Fi. With publicly available exploit code and relatively straightforward exploitation conditions, organizations must prioritize patching; however, the low observed threat activity and availability of vendor remediation make this actionable and containable.
Apply vendor patch.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Flowise version 3.0.5 contains a remote code execution vulnerability in the CustomMCP node. The mcpServerConfig paramete
Flowise versions before 3.0.1 allow unauthenticated access to the Custom MCPs feature, which is designed to execute OS c
FlowiseAI Flowise version 2.2.6 contains an arbitrary file upload vulnerability in the /api/v1/attachments endpoint. Una
Arbitrary file read and write in Flowise versions prior to 3.0.8 allows an authenticated attacker with access to the flo
Remote code execution in Flowise before 3.1.2 allows any authenticated user (or API caller with chatflow view/update per
Flowise is a drag & drop user interface to build a customized large language model flow. Rated critical severity (CVSS 9
Authenticated users can upload arbitrary files to Flowise 3.0.7 due to missing validation, enabling persistent storage o
Unrestricted file upload in Flowise LLM workflow builder before 3.0.13 via /api/v1/attachments endpoint allows unauthent
Missing authentication on NVD data endpoint in Flowise before 3.0.13 allows unauthenticated access to internal vulnerabi
Authenticated remote code execution in FlowiseAI Flowise (v3.0.1 up to but not including 3.0.8, and later versions when
Remote code execution in Flowise before 3.1.3 arises because its Pyodide Python-code validator (validatePythonCodeForDat
Remote code execution in FlowiseAI Flowise before 3.1.3 lets an attacker execute arbitrary OS commands as the Flowise pr
EUVD-2026-25291
GHSA-x5w6-38gp-mrqh
NVD
CVE.org
EPSS
Vulnrichment
VulDB
Exploit-DB