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Fencer Vulns
critical 9.8

CVE-2023-33831 in the critical feed json

A remote command execution (RCE) vulnerability in the /api/runscript endpoint of FUXA

published 2023-09-18 3 y ago modified 2026-06-17 4 mo ago also GHSA-r87q-fq37-pvr6 , EUVD-2023-2584

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
26.0%
EPSS 26.0% chance of exploitation in 30 days, percentile 97%
public exploits
0
none known, plus a Nuclei check

Summary

A remote command execution (RCE) vulnerability in the /api/runscript endpoint of FUXA 1.1.13 allows attackers to execute arbitrary commands via a crafted POST request.

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
2 y ago

Exploit prediction

25.95% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template FUXA - Unauthenticated Remote Code Execution nuclei detection template
  • youtu.be https://youtu.be/Xxa6yRB2Fpw referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/rodolfomarianocy/Unauthenticated-RCE-FUXA-CVE-2023-33831 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

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

Affected packages

ecosystem package affected fixed in
npm @frangoteam/fuxa
<=1.1.13
 no fix listed

Classification

Weakness
  • CWE-77 Improper Neutralization of Special Elements used in a Command
  • CWE-94 Improper Control of Generation of 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.