XXE in Nokogiri
CVE-2020-26247
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…
Vulnerability class: XXE (XML External Entity)
EPSS: 0.011 (62.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 2.6 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N.
Affected products
- Nokogiri — versions 1.11.0
- Sparklemotion Nokogiri — versions < 1.11.0.rc4
- Debian Debian_linux — versions 9.0, 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (Third Party Advisory, Mitigation)
- security-advisories@github.com (Product, Third Party Advisory)
- security-advisories@github.com (Permissions Required)
- security-advisories@github.com (Third Party Advisory, Release Notes)
- security-advisories@github.com (Patch, Third Party Advisory)
- security-advisories@github.com (mailing-list, Mailing List, Third Party Advisory)
- security-advisories@github.com (vendor-advisory, Third Party Advisory)
- security-advisories@github.com (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-26247?
- CVE-2020-26247 is a low-severity vulnerability in Nokogiri, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 2.6/10. Published 2020-12-30.
- How severe is CVE-2020-26247?
- Low severity. CVSS v3 base score is 2.6 out of 10.
- Is CVE-2020-26247 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.