Inefficient Regular Expression Complexity Affecting jruby package, versions *


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.5% (42nd percentile)

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  • Snyk IDSNYK-UBUNTU2004-JRUBY-15370357
  • published4 Mar 2026
  • disclosed27 Feb 2026

Introduced: 27 Feb 2026

CVE-2025-10990  (opens in a new tab)
CWE-1333  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:20.04 jruby.

NVD Description

Note: Versions mentioned in the description apply only to the upstream jruby package and not the jruby package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

A flaw was found in REXML. A remote attacker could exploit inefficient regular expression (regex) parsing when processing hex numeric character references (&#x...;) in XML documents. This could lead to a Regular Expression Denial of Service (ReDoS), impacting the availability of the affected component. This issue is the result of an incomplete fix for CVE-2024-49761.

CVSS Base Scores

version 3.1