CVE-2026-102993
highpypdf is a free and open-source pure-python PDF library.
Vendor / product: Pypdf Project — pypdf
pypdf is a free and open-source pure-python PDF library. Prior to 6.17.0, a crafted PDF can provide unusually large Roman page-label values that cause pypdf/_page_labels.py to generate excessively large numeral strings when an application retrieves document page labels, consuming large amounts of memory and potentially making the application unavailable. This issue is fixed in version 6.17.0.
CVSS
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-09-30 20:17
Modified: 2026-10-02 17:17
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 06:56 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
pypdf_project / pypdf <6.17.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/py-pdf/pypdf/commit/89db7c4fe9315ecc964bfdf05a4e8c4b94175163
Patch / mitigation: https://github.com/py-pdf/pypdf/pull/4047
Patch / mitigation: https://github.com/py-pdf/pypdf/security/advisories/GHSA-qv6h-rv94-w285
References
- https://github.com/py-pdf/pypdf/commit/89db7c4fe9315ecc964bfdf05a4e8c4b94175163 security-advisories@github.com
- https://github.com/py-pdf/pypdf/pull/4047 security-advisories@github.com
- https://github.com/py-pdf/pypdf/releases/tag/6.17.0 security-advisories@github.com
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-qv6h-rv94-w285 security-advisories@github.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:56 UTC · record ↗