Highest advisory severityCritical 2 vendors · 2 advisories

CVE-2026-54531: Denial of Service via crafted PDF with outlines

Not in the CISA KEV catalog. Critical advisory severity (CVSS 5.5, 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-2026-54531 key facts

CISA KEV: Not listed (catalog checked Nov 9, 2026)
Highest advisory severity: Critical
CVSS base score: 5.5 (Red Hat)
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H (Red Hat)
Weakness: CWE-835
Fixed releases: Red Hat: 6.13.0
Vendor advisories: 2 from NetApp, Red Hat
VulniPulse record: Published Jul 13, 2026 · Updated Sep 29, 2026

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-54531; bulletin-wide values are not repeated here.

Is CVE-2026-54531 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-54531 is not in the CISA KEV catalog (checked Nov 9, 2026) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-54531?

Upgrade to a fixed release named by the vendor:

Red Hat: 6.13.0

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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 Sep 17, 2026Source updated Sep 29, 2026
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 evidence Open source bulletin

Red Hat

1 advisory

Advisory severityMedium5.5
Medium [CVE-2026-54531] Denial of Service via crafted PDF with outlines
CVE-2026-54531Source published Jun 22, 2026Source updated Jun 22, 2026
pypdf is a free and open-source pure-python PDF library. Prior to 6.13.0, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with outlines into a writer. This vulnerability is fixed in 6.13.0. A flaw was found in pypdf (before 6.13.0). A crafted PDF with outlines can trigger an infinite loop when merged into a PdfWriter, causing denial of service. An attacker who can supply such a document for merge processing may hang the application indefinitely. Red Hat exposure mirrors other pypdf consumers: Python services that merge or rewrite PDFs using the library in Quay, observability, and hybrid platform containers. 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-835. Red Hat…
Affected products in this advisory
No product details extracted. Check the source bulletin.
Source-reported affected versions
< 6.13.0
Source-reported fixed versions
6.13.0
Mitigation guidance
No mitigation guidance extracted; consult the source.
Full advisory and evidence Open source bulletin

All NetApp advisories

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