CVE•Published 2026-06-30•Modified 2026-07-06•1 article on news•4 live references•NVD data
CVE-2026-56278Flowiseai · Flowise
Vulnerability data via NVD (ingested)
CVSS v3.1
9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS percentile
30
Exploit Prediction Scoring System · top 70% of all CVEs
Weaknesses (CWE)
Description
Flowise before 3.1.0 (affected versions 3.0.13 and earlier) uses a weak hardcoded default secret ('flowise') for the express-session middleware when the EXPRESS_SESSION_SECRET environment variable is not set (packages/server/src/enterprise/middleware/passport/index.ts). Because this default secret is publicly visible in the source code, an attacker can forge valid signed session cookies to impersonate any user and bypass authentication.
Timeline
Published 2026-06-30
Modified 2026-07-06
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag2,790 hosts
vuln:CVE-2026-56278Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Flowiseai Flowise"All exposed Flowiseai Flowise instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Flowise"HTTP body or banner mentions "Flowise" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-56278Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-56278Censys host search filtered to this CVE id.
grep.app
CVE-2026-56278Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-56278GitHub code search for direct mentions.
Google dork
"CVE-2026-56278" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-56278 on GitHub.