Bug 2562889

Summary: CVE-2026-116620 mysql9.7: rapidjson: Denial of Service via out-of-bounds read in regex parser [fedora-rawhide]
Product: [Fedora] Fedora Reporter: Ronit Dey <rdey>
Component: mysql9.7Assignee: Michal Schorm <mschorm>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: db-sig, mschorm
Target Milestone: ---Keywords: Security, SecurityTracking
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["e74e2d9c-6563-4390-9b93-4dd07cd424e1"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:    
Bug Blocks: 2561515    

Description Ronit Dey 2026-10-28 13:44:14 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

A security vulnerability has been detected in Tencent RapidJSON up to 1.1.0. This issue affects the function GenericStringStream<UTF8<char>>::Take in the library include/rapidjson/stream.h of the component Regex Parser. The manipulation leads to out-of-bounds read. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Comment 1 Michal Schorm 2026-10-28 15:13:16 UTC 
MySQL bundles a specific rapidjson version (commit `06d58b9e848c650114556a23294d0b6440078c61`) with custom patches
MySQL 9.7.4 (released 2026-10-20) still bundles the vulnerable commit.

The CVE is in the upstream rapidjson library, but it is not yet fixed:
  https://github.com/Tencent/rapidjson/issues/2401
  https://www.cve.org/CVERecord?id=CVE-2026-116620