Medium5.5Red Hat Linux

Medium [CVE-2026-84310] Denial of Service via crafted PDF outlines

This medium-severity Red Hat Linux advisory covers CVE-2026-84310 affecting Exploit Intelligence, Lightspeed Core, OpenShift Lightspeed.

CVE-2026-84310 Published Sep 1, 2026Updated by vendor Sep 1, 2026

CVE-2026-84310

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

A flaw was found in pypdf. A remote attacker could craft a malicious PDF document with specially designed outlines.

Processing this document would cause the pypdf library to consume excessive processing time and memory, leading to a Denial of Service (DoS) condition. This vulnerability is due to a lack of limits on entry-count and nesting-depth during outline traversal.

Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H). Weakness: CWE-770.

Affected Red Hat products: Exploit Intelligence; Lightspeed Core; OpenShift Lightspeed; Red Hat Ansible Automation Platform 2; Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat OpenShift AI (RHOAI); Red Hat Quay 3. Will not fix / out of support: Exploit Intelligence; Red Hat Ansible Automation Platform 2; Red Hat Quay 3.

Red Hat does not currently list a fixing RHSA for this CVE.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

Fixed versions

6.16.1

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

Mitigation

Upgrade to a fixed release: 6.16.1. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

Discussion(0)

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