Disclosure summary
REXML has a DoS condition when parsing malformed XML file
Source-reported weakness categories
CWE-400
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Microsoft Security Updates (CVRF) · 2025-Sep
Open original source · Updated May 06, 2026
REXML has a DoS condition when parsing malformed XML file
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 7.5
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | azl3 ruby 3.3.5-6 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 rubygem-rexml 3.3.9-2 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 ruby 3.3.5-8 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 ruby 3.3.5-5 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 rubygem-rexml 3.3.9-1 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 ruby 3.1.7-3 on CBL Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 ruby 3.3.5-7 on Azure Linux 3.0 | (MSRC status code 3) |
Vendor remediation references
- CBL-Mariner Releases · build 3.3.9-2 · product IDs 20629-17084, 17652-17084
- Vendor guidance · product IDs 20629-17084, 17652-17084
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2025-09-20T21:04:06-04:00
MODIFIED 2026-05-06T10:39:02-04:00
INGESTED 2026-10-08T12:45:41-04:00