CVE Feed

    Dashboard / CVE / CVE-2026-102997

    CVE-2026-102997

    pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF containing a partially malformed /FlateDecode stream with padded data can force pypdf/filters.py to use inefficient byte-by-byte decompression while the earlier recovery counter fails to advance for bytes that successfully decode, causing long runtimes and application unavailability. This is a residual issue after the malformed FlateDecode recovery fix. This issue is fixed in version 6.18.1.

    Published:Sep 30, 2026
    Last Modified:Oct 5, 2026
    EPS:Sep 30, 2026
    EPSS Score:0.00301
    CVSS Score:7.5

    Affected Products

    Vendor
    Py-pdf
    Product
    Pypdf
    Vendor
    Pypdf Project
    Product
    Pypdf

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-119209 (CVSS 7.1) — pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive memory w…
    CVE-2026-119208 (CVSS 7.1) — pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive time and…
    CVE-2026-119207 (CVSS 7.1) — pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive memory w…
    CVE-2026-119206 (CVSS 7.1) — pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can take excessive time to ret…
    CVE-2026-119205 (CVSS 7.1) — pypdf is a free and open-source pure-python PDF library. Prior to 6.21.4, pypdf can enter an infinite loop whe…
    CVE-2026-119204 (CVSS 7.1) — pypdf is a free and open-source pure-python PDF library. Prior to 6.21.4, pypdf can consume excessive memory w…
    CVE-2026-119203 (CVSS 7.1) — pypdf is a free and open-source pure-python PDF library. Prior to 6.21.4, pypdf can enter an infinite loop whi…
    CVE-2026-115585 (CVSS 7.1) — pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an incomplete remediation for repeat…
    CVE-2026-115580 (CVSS 7.1) — pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an attacker can craft a PDF with a s…
    CVE-2026-115572 (CVSS 7.1) — pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an attacker can craft a PDF that rep…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High