CVE-2025-71334
Confirmed PUBLISHEDFlowise - Arbitrary File Access via Missing Chat Flow ID Validation
Not yet in CISA KEV
Recommended Action
Prioritize immediate patching and validate internet-facing exposure. Monitor for matching exploitation attempts in your environment.
At a Glance
Flowise before 3.0.6 (affected versions 2.2.8 and earlier) contains an arbitrary file access vulnerability due to missing validation that the chatflowId and chatId parameters are UUIDs or numbers in file handling operations. By supplying a path-traversal value (e.g., '../../../../../tmp') as the chatflow id, an unauthenticated attacker can use the /api/v1/chatflows endpoint (via addBase64FilesToStorage) to write arbitrary files, and the /api/v1/get-upload-file and /api/v1/openai-assistants-file/download endpoints (via streamStorageFile) to read arbitrary files. Arbitrary file write may lead to remote code execution.
- CVE Published
- Jun 25, 2026
- Exploitation Reported
- Jul 03, 2026
- CVSS
- 9.3 Critical
- EPSS
- 1.2%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Flowise |
Flowise
|
0 to < 3.0.6 |
Affected |
| Flowise |
Flowise
|
3.0.6 |
Unaffected |
CVE References
- GitHub Security Advisory (GHSA-q67q-549q-p849) github.com · Vendor Advisory https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-q67q-54...
- https://github.com/FlowiseAI/Flowise/commit/8bd3de41533de78e4ef6c980e5704a1f9cb7ae6f github.com · Patch https://github.com/FlowiseAI/Flowise/commit/8bd3de41533de78e4ef6c980e...
- https://github.com/FlowiseAI/Flowise/commit/c2b830f279e454e8b758da441016b2234f220ac7 github.com · Patch https://github.com/FlowiseAI/Flowise/commit/c2b830f279e454e8b758da441...
- VulnCheck Advisory: Flowise - Arbitrary File Access via Missing Chat Flow ID Validation vulncheck.com · Third-Party Advisory https://www.vulncheck.com/advisories/flowise-arbitrary-file-access-vi...
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| KEVIntel First | 2026-07-28 12:54 UTC |
Operational indicators for this CVE are listed on the Detection tab.
Observed Exploitation Attempts
Exploitation attempts against this vulnerability observed first-hand by KEVIntel private honeypots over the last 30 days.
- Attempts Observed
- 156
- Unique Attacker IPs
- 8
- Attacker Countries
- 🇨🇳 🇮🇱 🇲🇽 🇸🇬 🇺🇦 🇺🇸
- Sensors Observed
- 1
Exploitation Attempts Over the Last 28 Days
First observed (all time) 2026-07-03 09:04 UTC · Last observed 2026-07-29 03:10 UTC
See more exploitation detail
- Pro — sensor software/region breakdown and 24h/7d window summaries.
- Enterprise — raw attacker IPs, request paths, User-Agents, and payloads.
Indicators of Compromise (IoCs)
Attacker IP IoCs observed in KEVIntel sensors are available to Pro and Enterprise accounts on the Detection tab and through the Pro API.
Learn about Pro API accessObserved Detection Signals (30d)
Aggregate counts from KEVIntel sensor telemetry for this CVE.
- Distinct request paths
- 1
- Distinct User-Agents
- 8
The specific request paths and User-Agents attackers are using are available on Pro and Enterprise plans.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitation Status
Exploited in the wild
Recorded 2026-07-03 09:04:50 UTC · KEVIntel
Active exploitation observed
Recorded 2026-07-03 09:04:50 UTC · KEVIntel sensor
Weaknesses (CWE)
-
External Control of File Name or Path
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
09:04 UTC 26 days ago09:04 UTC · 26 days ago
Observed by KEVIntel sensors
Evidence-backed exploitation signal
-
09:04 UTC 26 days ago09:04 UTC · 26 days ago
Indicators of compromise added (8)
Indicators of compromise recorded
-
21:41 UTC about 1 month ago21:41 UTC · about 1 month ago
CVE published
Vulnerability disclosed publicly
-
01:48 UTC about 1 month ago01:48 UTC · about 1 month ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2025-71334
{
"cve_id": "CVE-2025-71334",
"title": "Flowise - Arbitrary File Access via Missing Chat Flow ID Validation",
"affected_vendor": "Flowise",
"affected_product": "Flowise",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 9.3,
"epss_score": 0.01171,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": true
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}