Bug 2549652

Summary: CVE-2026-106435 python-pdfminer: pymongo: Denial of Service via out-of-bounds read during malformed BSON decoding [fedora-all]
Product: [Fedora] Fedora Reporter: Ganesh <gnaik>
Component: python-pdfminerAssignee: Ben Beasley <code>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: code, python-packagers-sig
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["ef7d041f-cd5e-4905-b14e-953ed7e9ab40"]}
Fixed In Version: Doc Type: ---
Doc Text:
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Clone Of: Environment:
Last Closed: 2026-10-12 18:13:38 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2548264    

Description Ganesh 2026-10-12 14:09:27 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.

The MongoDB Python Driver's binary accelerator can read outside a buffer when an application decodes malformed BSON containing a truncated regular-expression element without a trailing NUL byte. An actor who can supply BSON to the documented decode or decode_all API can cause the application process to terminate when the C extension is loaded. The driver's normal database wire-protocol path does not reach this code.
Comment 1 Ben Beasley 2026-10-12 18:13:38 UTC 
Only pdfminer/_saslprep.py is derived from pymongo; none of the BSON code is present in this package.