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    CVE-2026-55497

    Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the built-in thumbnail and avatar image decoders limit compressed file size but do not limit decoded pixel dimensions, allowing an authenticated user to submit a small PNG, JPEG, or GIF that triggers an unbounded allocation and terminates the Cloudreve process through fatal out-of-memory behavior. This issue is fixed in version 4.17.0.

    Published:Jul 31, 2026
    Last Modified:Jul 31, 2026
    EPS:Jul 31, 2026
    EPSS Score:0.00531
    CVSS Score:6.5

    Affected Products

    Vendor
    Cloudreve
    Product
    Cloudreve

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-62323 (CVSS 6.3) — Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, ViewerSessionValidation uses o…
    CVE-2026-55502 (CVSS 7.1) — Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, POST /api/v4/admin/policy/oaut…
    CVE-2026-55499 (CVSS 4.3) — Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, a single-file share event-stre…
    CVE-2026-55496 (CVSS 4.3) — Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, GET /api/v4/user/search calls …
    CVE-2026-55495 (CVSS 4.3) — Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the WOPI PUT_RELATIVE handler …
    CVE-2026-54560 (CVSS 7.6) — Cloudreve is a self-hosted file management and sharing system. From 4.12.0 until 4.16.1, Cloudreve's OAuth acc…
    CVE-2026-54563 (CVSS 7.1) — Cloudreve is a self-hosted file management and sharing system. Prior to 4.16.1, a Cloudreve WebDAV account roo…
    CVE-2026-54562 (CVSS 6.5) — Cloudreve is a self-hosted file management and sharing system. Prior to 4.16.1, Cloudreve's remote download wo…
    CVE-2026-25726 (CVSS 8.1) — Cloudreve is a self-hosted file management and sharing system. Prior to version 4.13.0, the application uses t…
    CVE-2022-32167 (CVSS 5.4) — Cloudreve versions v1.0.0 through v3.5.3 are vulnerable to Stored Cross-Site Scripting (XSS), via the file upl…

    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