Bug 2523549 (CVE-2021-47996) - CVE-2021-47996 nokogiri: libxml2: Nokogiri: Memory Corruption via Crafted XML Documents
Summary: CVE-2021-47996 nokogiri: libxml2: Nokogiri: Memory Corruption via Crafted XML...
Keywords:
Status: NEW
Alias: CVE-2021-47996
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-25 15:32 UTC by OSIDB Bzimport
Modified: 2026-09-07 17:05 UTC (History)
26 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-08-25 15:32:32 UTC 
Nokogiri before 1.11.4 (CRuby implementation only, when the packaged/vendored libxml2 is used) bundles libxml2 2.9.10, which is affected by multiple vulnerabilities addressed in libxml2 2.9.12, including a memory leak in xmlSchemaValidateStream (CVE-2019-20388), a global buffer over-read in xmlEncodeEntitiesInternal (CVE-2020-24977), a heap-based buffer overflow (CVE-2021-3517), and an out-of-bounds read (CVE-2021-3518). Processing crafted XML documents may lead to denial of service, information disclosure, or memory corruption.
Note You need to log in before you can comment on or make changes to this bug.