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Fencer Vulns
critical 9.8

CVE-2025-55346 in the critical feed json

Unintended dynamic code execution leads to remote code execution by network attackers

published 2025-08-14 14 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-24803 , GHSA-hmgh-466j-fx4c

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
23.8%
EPSS 23.8% chance of exploitation in 30 days, percentile 97%
public exploits
0
none known

Summary

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.

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
14 mo ago

Exploit prediction

23.79% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • research.jfrog.com https://research.jfrog.com/vulnerabilities/flowise-js-injection-remote-code-exection-jfsa-2025-001379925/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
npm flowise
<=2.2.7-patch.1
 no fix listed

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code
  • CWE-627 Dynamic Variable Evaluation
  • CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.