← Vulnerability feed

Vulnerability record · CVE-2024-5986 · published 2 February 2026

CVE-2024-5986: A vulnerability in h2oai/h2o-3 version 3.46.0.1 allows remote attackers to write arbitrary data to any file on…

A vulnerability in h2oai/h2o-3 version 3.46.0.1 allows remote attackers to write arbitrary data to any file on the server. This is achieved by exploiting the `/3/Parse` endpoint to inject attacker-controlled data as the header of an empty file, which is then exported using the `/3/Frames/framename/export` endpoint. The impact of this vulnerability includes the potential for remote code execution and complete access to the system running h2o-3, as attackers can overwrite critical files such as private SSH keys or script files.

9.1 CVSS 3.0 Critical EPSS 0.67% · top 50.1% CWE-73 · CWE-73 Deferred
9.1CVSS 3.0 base score
0.67%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

A vulnerability in h2oai/h2o-3 version 3.46.0.1 allows remote attackers to write arbitrary data to any file on the server. This is achieved by exploiting the `/3/Parse` endpoint to inject attacker-controlled data as the header of an empty file, which is then exported using the `/3/Frames/framename/export` endpoint. The impact of this vulnerability includes the potential for remote code execution and complete access to the system running h2o-3, as attackers can overwrite critical files such as private SSH keys or script files.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

References

LinkTags
https://huntr.com/bounties/64ff5319-6ac3-4447-87f7-b53495d4d5a3

Track CVE-2024-5986 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2025-33053Microsoft Windows WebDAV Internet Shortcut File Path Control RCEWindows Internet Shortcut (.url) files allow external control of a file name or path, which an unauthorized attacker can abuse to execute code over a…KEVEPSS 87%analysed5.4CVE-2025-24054Windows NTLM file path control allows spoofingWindows NTLM mishandles externally controlled file names or paths, letting an unauthorized attacker perform spoofing over a network. The flaw affects…KEVEPSS 59%analysed7.1CVE-2025-0111PAN-OS authenticated file read via management web interfacePAN-OS contains an authenticated file read vulnerability that lets a user with network access to the management web interface read files on the PAN-O…KEVEPSS 2.0%analysed6.5CVE-2024-43451Microsoft Windows NTLMv2 hash disclosure via spoofingCVE-2024-43451 is an NTLM hash disclosure spoofing vulnerability in Microsoft Windows. An attacker can induce a victim to disclose their NTLMv2 hash,…KEVEPSS 84%analysed4.3CVE-2018-13374FortiOS and FortiADC access control flaw exposes LDAP credentialsFortiOS (6.0.2, 5.6.7 and earlier) and FortiADC (6.1.0, 6.0.0-6.0.1, 5.4.0-5.4.4) contain an improper access control flaw. An attacker can redirect a…KEVEPSS 38%analysed7.8CVE-2022-22960VMware Workspace ONE Access and related products local privilege escalationVMware Workspace ONE Access, Identity Manager, vRealize Automation and related products ship support scripts with incorrect permission assignments (C…KEVEPSS 36%analysed9.8CVE-2020-1631Juniper Junos OS J-Web HTTP service path traversal and local file inclusionThe HTTP/HTTPS service behind J-Web, Web Authentication, Dynamic-VPN, Firewall Authentication Pass-Through with Web-Redirect, and ZTP in Junos OS doe…KEVEPSS 4.8%analysed7.8CVE-2021-23874McAfee Total Protection local privilege escalation via self-defense bypassMcAfee Total Protection before 16.0.30 has an improper privilege management flaw that lets a local user bypass the product's self-defense mechanism a…KEVEPSS 1.0%analysed

Source: NIST National Vulnerability Database (record CVE-2024-5986), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.