CVE-2026-36453

Insecure Direct Object Reference in Rhymix Allows Arbitrary File Access

Published Sep 13, 2026 CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed
Description
Rhymix before 2.1.31 allows insecure direct object reference, aka RVE-2026-1. Arbitrary files can be accessed via extra variables.

Analysis

AI-generated

Technical impact

Rhymix versions before 2.1.31 contain an insecure direct object reference flaw that permits an attacker to request arbitrary files on the host by appending additional query variables to a URL. The flaw can expose sensitive system and configuration files to an unauthenticated user, resulting in a confidentiality breach. This weakness is classified as CWE‑425.

Affected Systems

The affected product is Rhymix, an open‑source content management framework. Deployments running any Rhymix release older than 2.1.31 are vulnerable. Updates through 2.1.31 and later contain a fix that removes the insecure direct access path and validates request parameters.

Risk and Exploitability

The CVSS score of 7.4 classifies the issue as high severity. The EPSS score is reported as less than 1 percent, indicating a low probability of exploitation in the current threat landscape. The vulnerability is not listed in the CISA KEV catalog. Because the flaw can be triggered by any user who can craft a web request, it is potentially exploitable from the internet without authentication, giving the attacker broad reach.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade Rhymix to version 2.1.31 or newer.
  • Until an upgrade can be applied, restrict the vulnerable endpoint to trusted IPs or use a web application firewall to block unauthorized requests.
  • Implement strict validation or sanitization of query parameters to prevent unintended variables from being interpreted.

Generated by OpenCVE AI on September 15, 2026 at 17:42 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Insecure Direct Object Reference in Rhymix Allows Arbitrary File Access
Type Values Removed Values Added
Title Arbitrary File Access via Insecure Direct Object Reference in Rhymix
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Arbitrary File Access via Insecure Direct Object Reference in Rhymix
Type Values Removed Values Added
Description Rhymix before 2.1.31 allows insecure direct object reference, aka RVE-2026-1. Arbitrary files can be accessed via extra variables.
First Time appeared Rhymix
Rhymix rhymix
Weaknesses CWE-425
CPEs cpe:2.3:a:rhymix:rhymix:*:*:*:*:*:*:*:*
Vendors & Products Rhymix
Rhymix rhymix
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L'}

Weaknesses
  • CWE-425

    Direct Request ('Forced Browsing')

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Sep 14, 2026, 3:53 PM
Reserved
Apr 6, 2026, 12:00 AM
Status
Deferred
Published
Sep 13, 2026, 9:16 PM
Modified
Sep 22, 2026, 8:00 PM