CVE-2025-67303
High PUBLISHEDAn issue in ComfyUI-Manager prior to version 3.38 allowed remote attackers to potentially manipulate its configuration and critical data. This was...
Not yet in CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
An issue in ComfyUI-Manager prior to version 3.38 allowed remote attackers to potentially manipulate its configuration and critical data. This was due to the application storing its files in an insufficiently protected location that was accessible via the web interface
- CVE Published
- Jan 05, 2026
- Exploitation Reported
- Jun 04, 2026
- CVSS
- 7.5 High
- EPSS
- 1.4%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| n/a |
n/a
|
n/a |
Affected |
CVE References
- GitHub — Comfy-Org/ComfyUI-Manager github.com · CVE Record https://github.com/Comfy-Org/ComfyUI-Manager/blob/main/docs/en/v3.38-...
- GitHub — Comfy-Org/ComfyUI-Manager github.com · CVE Record https://github.com/Comfy-Org/ComfyUI-Manager/pull/2338/commits/e44c5c...
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
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 |
|---|---|
| The Shadowserver First | 2026-06-04 00:00 UTC |
Scanner Artifacts
Nuclei and Metasploit references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-67303.yaml | Jun 01, 2026 |
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Exploitation Status
Exploited in the wild
Recorded 2026-06-04 00:00:00 UTC · The Shadowserver
Proof of concept available
Recorded 2026-06-12 14:21:10 UTC · Nuclei Templates
Weaknesses (CWE)
-
Unprotected Alternate Channel
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-67303.yaml | Jun 01, 2026 |
Recent Mentions
Github Advisory Database (PIP) · Jun 22, 2026
Impact An Unprotected Alternate Channel (CWE-420) vulnerability was discovered in ComfyUI-Manager versions prior to 3.38. Vulnerability Details In affected versions, ComfyUI-Manager stored its configuration in the user/default/ComfyUI-Manager/ directory, which was accessible via ComfyUI's web APIs without proper access control. This unprotected alternate channel allowed remote attackers to read and manipulate configuration files and critical data through the web interface. Potential Attack Scenarios An attacker exploiting this vulnerability could: Modify security settings: Lower the security level from "strong" to "weak" to enable more dangerous operations Tamper with custom node sources: Add malicious custom node repositories Manipulate snapshot data: Corrupt or alter system snapshots Change manager behavior: Alter various manager configuration settings Affected Configurations Configuration Risk Level Systems running with --listen 0.0.0.0 (externally exposed) HIGH Systems behind reverse proxy without proper access control MEDIUM Local-only installations (default, localhost only) NOT AFFECTED Patches This issue has been patched in ComfyUI-Manager version 3.38. Requirements Component Minimum Version Notes ComfyUI v0.3.76+ Required for System User Protection API ComfyUI-Manager v3.38+ Contains the security fix What the Patch Does Path Migration: Configuration files moved from unprotected user/default/ComfyUI-Manager/ to protected user/__manager/ Protected Directory: The new __manager/ directory leverages ComfyUI's System User Protection API, which blocks external web API access Security Level Enforcement: Settings below "normal" are automatically raised to "normal" during migration Legacy Backup: Old data is backed up to .legacy-manager-backup/ with startup reminders until manually deleted Fallback Protection: If ComfyUI < v0.3.76, Manager forces "strong" security mode, blocking new installations until ComfyUI is updated Patch...
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
nuclei · Created Unknown
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
14:21 UTC about 1 month ago14:21 UTC · about 1 month ago
Public PoC available
Public proof-of-concept code published
-
00:00 UTC about 2 months ago00:00 UTC · about 2 months ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
15:34 UTC about 2 months ago15:34 UTC · about 2 months ago
Nuclei template available
Scanner coverage available
-
00:00 UTC 7 months ago00:00 UTC · 7 months ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC 7 months ago00:00 UTC · 7 months 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-2025-67303
{
"cve_id": "CVE-2025-67303",
"title": "An issue in ComfyUI-Manager prior to version 3.38 allowed remote attackers to...",
"affected_vendor": "Comfy-Org",
"affected_product": "ComfyUI-Manager",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "High",
"cvss_score": 7.5,
"epss_score": 0.01361,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}