CVE-2020-26247
ruby-nokogiri - security update
4.3
MEDIUM
CVSS 3.1
EPSS 0.26%
Description
Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri before version 1.11.0.rc4 there is an XXE vulnerability. XML Schemas parsed by Nokogiri::XML::Schema are trusted by default, allowing external resources to be accessed over the network, potentially enabling XXE or SSRF attacks. This behavior is counter to the security policy followed by Nokogiri maintainers, which is to treat all input as untrusted by default whenever possible. This is fixed in Nokogiri version 1.11.0.rc4.
How to fix CVE-2020-26247
To remediate CVE-2020-26247, upgrade the affected package to a fixed version below.
- —upgrade to 1.11.1+dfsg-1 or later
- —upgrade to 1.6.8.1-1+deb9u1 or later
- —upgrade to 1.11.0 or later
Is CVE-2020-26247 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1.11.1+dfsg-1
- from 0, < 1.6.8.1-1+deb9u1
- from 0, < 1.11.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |