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    CVE-2026-49954

    Discuz! X5.0 releases 20260320 through 20260610 contain a local file inclusion vulnerability that allows authenticated administrators to execute arbitrary code by importing a specially crafted plugin configuration containing path traversal sequences in the directory attribute. Attackers can trigger an exception during plugin installation to bypass sanitization routines, causing malicious paths to be stored unsanitized and subsequently passed to include(), which combined with file upload functionality escalates to arbitrary code execution in the context of the web server user.

    Published:Jun 15, 2026
    Last Modified:Jul 28, 2026
    EPS:Jun 15, 2026
    EPSS Score:0.00525
    CVSS Score:7.2

    Affected Products

    Vendor
    Discuz
    Product
    Discuzx

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-193 PHP Remote File Inclusion

    Related CVEs

    CVE-2026-49953 (CVSS 6.9) — Discuz! X5.0 releases 20260320 through 20260610 contains a CAPTCHA bypass vulnerability that allows unauthenti…
    CVE-2026-49952 (CVSS 9.3) — Discuz! X5.0 releases 20260320 through 20260501 contains an authentication bypass vulnerability that allows un…
    CVE-2024-30884 (CVSS 7.1) — Reflected Cross-Site Scripting (XSS) vulnerability in Discuz! version X3.4 20220811, allows remote attackers t…
    CVE-2022-45543 (CVSS 6.1) — Cross site scripting (XSS) vulnerability in DiscuzX 3.4 allows attackers to execute arbitrary code via the dat…
    CVE-2018-10298 (CVSS 5.4) — Discuz! DiscuzX through X3.4 has reflected XSS via forum.php?mod=post&action=newthread because data/template/1…
    CVE-2018-10297 (CVSS 5.4) — Discuz! DiscuzX through X3.4 has stored XSS via the portal.php?mod=portalcp&ac=article URI, related to mishand…
    CVE-2018-5375 (CVSS 6.1) — Discuz! DiscuzX X3.4 has XSS via the include\spacecp\spacecp_space.php appid parameter in a delete action.…
    CVE-2018-5377 (CVSS 9.8) — Discuz! DiscuzX X3.4 allows remote attackers to bypass intended access restrictions via the archiver\index.php…
    CVE-2018-5376 (CVSS 6.1) — Discuz! DiscuzX X3.4 has XSS via the include\spacecp\spacecp_upload.php op parameter.…
    CVE-2018-5331 (CVSS 5.4) — Discuz! DiscuzX X3.4 has XSS via the view parameter to include/space/space_poll.php, as demonstrated by a mod=…

    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