CVE-2021-28965

High

Description

The REXML gem before 3.2.5 in Ruby before 2.6.7, 2.7.x before 2.7.3, and 3.x before 3.0.1 does not properly address XML round-trip issues. An incorrect document can be produced after parsing and serializing.

SeverityHigh

CVSS7.5

Exploit probability—

Product

Ruby-lang Rexml

PublishedApr 21, 2021

First seenApr 21, 2021

How to fix

Update

ruby-lang rexml3.2.5 or later
ruby-lang ruby2.6.7, 2.7.3, 3.0.1 or later

Vendor advisories

lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WTVFTLFVCSUE5CXHINJEUCKSHU4SWDMT/

Affected products

Product	Affected versions	Fixed in
ruby-lang rexml	v < 3.2.5	3.2.5
ruby-lang ruby	v < 2.6.7, 2.7.0 ≤ v < 2.7.3, 3.0.0 ≤ v < 3.0.1	2.6.7, 2.7.3, 3.0.1
fedoraproject fedora	34	—

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