Skip to main content
Public proof of conceptFix available

CVE-2024-39943

A public proof of concept exists; no exploitation attested.

  • Published2024-07-04
  • Fixed in0.52.10
  • WeaknessCWE-284 · CWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

rejetto HFS (aka HTTP File Server) 3 before 0.52.10 on Linux, UNIX, and macOS allows OS command execution by remote authenticated users (if they have Upload permissions). This occurs because a shell is used to execute df (i.e., with execSync instead of spawnSync in child_process in Node.js).

Timeline

dates in UTC
  1. 2024-07-0423:15CVE publishedNVD
  2. 2026-10-2319:23First public proof of conceptPoC-in-GitHub
  3. 2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2024-39943?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2024-39943?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · CISA-ADP
Rejetto http file server
BranchAffectedFixed in
0.52< 0.52.100.52.10

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Rejetto http file server to 0.52.10

Advisories and patches

Detection

read 2026-10-23 19:24 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
2 repositories, unverifiedHeyholiday067/CVE-2024-39943-PocJenmrR/Node.js-CVE-2024-39943
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionpoc2024-07-12
  • OpenCVESSVC decisionpoc—
  • CNACVSS 3.19.9read 2026-10-23
  • NVDCVSS 3.18.8read 2026-10-23
  • CISA-ADPweakness (CWE)CWE-2842024-07-05
  • NVDweakness (CWE)CWE-78read 2026-10-23
  • FIRST EPSSEPSS score39.5 %read 2026-10-23
  • PoC-in-GitHubproof of concept2read 2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2024-07-04
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2024-39943?

rejetto HFS (aka HTTP File Server) 3 before 0.52.10 on Linux, UNIX, and macOS allows OS command execution by remote authenticated users (if they have Upload permissions). This occurs because a shell is used to execute df (i.e., with execSync instead of spawnSync in child_process in Node.js).

Is CVE-2024-39943 actively exploited?

A proof-of-concept exploit exists for CVE-2024-39943, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2024-39943?

CVE-2024-39943 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Hear about the next vulnerability in your software

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, October 2026Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database