Flowise - Weak Default Token Hash Secret in JWT Token Encryption

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Summary

CVECVE-2026-56269
StatePUBLISHED
AssignerVulnCheck
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-24 13:16:35 UTC
Updated2026-06-24 16:16:33 UTC
DescriptionFlowise before 3.1.0 (npm package flowise, versions 3.0.13 and earlier) uses a weak hardcoded default value 'Secre$t' for the TOKEN_HASH_SECRET environment variable in packages/server/src/enterprise/utils/tempTokenUtils.ts when the variable is not configured. This secret derives the AES-256-CBC key used to encrypt user IDs and workspace IDs in the 'meta' field of JWT tokens. An attacker who knows the default secret can decrypt this metadata to extract internal user and workspace identifiers, and re-encrypt manipulated values such as altered user or workspace IDs. Because the JWT signature is validated separately, decrypting or tampering with this metadata does not by itself grant access, but the disclosure of internal identifiers and possible metadata manipulation could aid privilege escalation or unauthorized data access.

Risk And Classification

Primary CVSS: v4.0 4.3 MEDIUM from [email protected]

CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-798 | CWE-798 Use of Hard-coded Credentials

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary4.3MEDIUMCVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/C...
4.0CNACVSS4.3MEDIUMCVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
3.1[email protected]Secondary4.6MEDIUMCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N
3.1CNACVSS4.6MEDIUMCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N

CVSS v4.0 Breakdown

Attack Vector
Local
Attack Complexity
High
Attack Requirements
None
Privileges Required
High
User Interaction
Active
Confidentiality
High
Integrity
Low
Availability
None
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None

CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Flowise Flowise affected 3.1.0 semver Not specified
CNA Flowise Flowise unaffected 3.1.0 semver Not specified

References

ReferenceSourceLinkTags
github.com/FlowiseAI/Flowise/security/advisories/GHSA-m7mq-85xj-9x33 [email protected] github.com
www.vulncheck.com/advisories/flowise-weak-default-token-hash-secret-in-jwt-toke... [email protected] www.vulncheck.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: kolega-ai-dev (en)

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