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Highest advisory severityCritical 2 vendors · 2 advisories

CVE-2026-54651: Denial of Service via crafted PDF

Not in the CISA KEV catalog. Critical advisory severity (CVSS 5.9, Red Hat). Fixed in 6.13.1 (Red Hat).

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

NVD detail CVE.org

CVE-2026-54651 key facts

CISA KEV
Not listed (catalog checked )
Highest advisory severity
Critical
CVSS base score
5.9 (Red Hat)
Weakness
CWE-835
Fixed releases
  • Red Hat: 6.13.1
Vendor advisories
2 from NetApp, Red Hat
VulniPulse record
Published · Updated

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-54651; bulletin-wide values are not repeated here.

Is CVE-2026-54651 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-54651 is not in the CISA KEV catalog (checked ) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-54651?

Upgrade to a fixed release named by the vendor:

  • Red Hat: 6.13.1
  • If PDF processing is required, implement processing timeouts and resource constraints (CPU/memory limits) to contain the impact of infinite loops. Running pypdf workloads in containerized processes with enforced resource limits provides defense-in-depth. Upgrading to pypdf >= 6.13.1 resolves this issue. (Red Hat)

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Alert me about NetApp

Vendor advisory comparison

NetApp

1 advisory
  • Advisory severityCritical10.0

    Critical [CVE-2022-42969 +99] September 2026 IBM Cognos Analytics Vulnerabilities in NetApp Products

    NTAP-20260917-0001Source published Source updated

    This bulletin covers 100 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.

    There are vulnerabilities in multiple Open-Source Software (OSS) components consumed by IBM Cognos Analytics versions 12.1.0 through 12.1.3 FP1 and 12.0.4 through 12.0.4 FP2 which when successfully exploited could lead to disclosure of sensitive information, addition or modification of data, or Denial of Service (DoS). NetApp states there is no workaround available at this time.

    Affected products in this advisory
    No product details extracted. Check the source bulletin.
    Source-reported affected versions
    • 12.1.0
    • 12.1.3
    • 12.0.4
    Source-reported fixed versions
    No fixed-version detail extracted. This does not mean no fix exists.
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

Red Hat

1 advisory
  • Advisory severityMedium5.9

    Medium [CVE-2026-54651] Denial of Service via crafted PDF

    CVE-2026-54651Source published Source updated

    pypdf is a free and open-source pure-python PDF library. Prior to 6.13.1, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with threads/articles into a writer. This vulnerability is fixed in 6.13.1. A flaw was found in pypdf. This vulnerability can result in a Denial of Service (DoS) condition, making the affected system unresponsive. Red Hat rates this issue as Moderate severity (CVSS 5.9) because exploitation requires a specially crafted PDF containing thread/article objects to be processed by pypdf's merge functionality. Weakness: CWE-835. Affected Red Hat products: Exploit Intelligence; OpenShift Lightspeed; Red Hat Ansible Automation Platform 2; Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat OpenShift AI (RHOAI)…

    Affected products in this advisory
    • Exploit Intelligence
    • OpenShift Lightspeed
    • Red Hat Ansible Automation Platform 2
    • Red Hat Enterprise Linux AI (RHEL AI) 3

    2 more entries in the full advisory.

    Source-reported affected versions
    • < 6.13.1
    Source-reported fixed versions
    • 6.13.1
    Mitigation guidance
    • If PDF processing is required, implement processing timeouts and resource constraints (CPU/memory limits) to contain the impact of infinite loops. Running pypdf workloads in containerized processes with enforced resource limits provides defense-in-depth. Upgrading to pypdf >= 6.13.1 resolves this issue.
    Full advisory and evidenceOpen source bulletin

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