mediumVulnerability
CVE-2026-84309
### Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires a (usually writing) code path where `TreeObject.insert_child` is involved. ### Patches This has been fixed in [pypdf==6.16.0](https://github.com/py-pdf/pypdf/releases/tag/6.16.0). ### Workarounds If you cannot upgrade yet, consider applying the changes from PR [#3964](https://github.com/py-pdf/pypdf/pull/3964).
Properties
- ghsa_id
- GHSA-jp53-mhqp-8xcg
- severity
- medium
- summary
- pypdf: Possible infinite loop for TreeObject.insert_child
- cve_id
- CVE-2026-84309
- is_ghsa_only
- false
- ghsa_published
- 2026-09-01T21:20:20Z
- source_url
- https://github.com/advisories/GHSA-jp53-mhqp-8xcg
- ghsa_updated
- 2026-09-01T21:21:21Z
Related Entities (4)
VULNERABLE_TO (1)
←[Software]pip/pypdf
AFFECTS (1)
→[Software]pip/pypdf
HAS_WEAKNESS (1)
→[Weakness]Loop with Unreachable Exit Condition ('Infinite Loop')
REPORTED_BY (1)
→[Source]GitHub Advisory Database
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