CVE-2025-55346
High PUBLISHEDUnintended dynamic code execution leads to remote code execution by network attackers
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
User-controlled input flows to an unsafe implementation of a dynamic Function constructor, allowing network attackers to run arbitrary unsandboxed JS code in the context of the host, by sending a simple POST request.
- CVE Published
- Aug 14, 2025
- Exploitation Reported
- Jun 01, 2026
- CVSS
- 9.8 Critical
- EPSS
- 18.4%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| — |
—
|
0 |
Affected |
CVE References
- Third-Party Advisory — research.jfrog.com research.jfrog.com · Third-Party Advisory https://research.jfrog.com/vulnerabilities/flowise-js-injection-remot...
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 | 2026-06-01 00:00 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
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:H/I:H/A:H
Exploitation Status
Exploited in the wild
Recorded 2026-06-01 00:00:00 UTC · The Shadowserver
Weaknesses (CWE)
-
Improper Control of Generation of Code ('Code Injection')
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
00:00 UTC 2 months ago00:00 UTC · 2 months ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
09:49 UTC 12 months ago09:49 UTC · 12 months ago
CVE published
Vulnerability disclosed publicly
-
04:40 UTC 12 months ago04:40 UTC · 12 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-2025-55346
{
"cve_id": "CVE-2025-55346",
"title": "Unintended dynamic code execution leads to remote code execution by network a...",
"affected_vendor": "",
"affected_product": "",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "High",
"cvss_score": 9.8,
"epss_score": 0.18448,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}