Bug 2522027

Summary: CVE-2026-67213 mozjs128: nanoid: Denial of Service via infinite loop in random ID generation [fedora-all]
Product: [Fedora] Fedora Reporter: Joel Chamberlain <jochambe>
Component: mozjs128Assignee: František Zatloukal <fzatlouk>
Status: CLOSED WONTFIX QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: fzatlouk
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["94d50fa1-8b52-494e-b604-57fac9394413"]}
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Last Closed: 2026-10-05 21:43:05 UTC Type: ---
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Documentation: --- CRM:
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 2508406    

Description Joel Chamberlain 2026-08-24 15:32:02 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.

nanoid (Nano ID) before 5.1.6 contains an infinite loop in the customAlphabet and customRandom functions. When these functions are configured with a size of 0, the internal generation loop never satisfies its exit condition and spins indefinitely, hanging the calling thread. An application that passes an unvalidated, attacker-controlled size of 0 to these functions is exposed to a denial-of-service condition.
Comment 1 František Zatloukal 2026-10-05 21:43:05 UTC 
Closing CVE bug as not relevant to the mozjs package, and there is sadly no option to opt out from these reports :( .