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    CVE-2026-38447

    osTicket 1.18.3 generates API keys using a predictable construction based on MD5 hashing. The use of MD5, combined with predictable inputs such as the current timestamp and client IP address, significantly reduces entropy. An attacker can approximate the key generation time and brute-force the key space within a feasible time window.

    Published:Aug 3, 2026
    Last Modified:Aug 4, 2026
    EPS:Aug 3, 2026
    EPSS Score:0.00455
    CVSS Score:9.8

    Affected Products

    Vendor
    Osticket
    Product
    Osticket

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-331 Insufficient Entropy

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-59 Session Credential Falsification through Prediction

    Related CVEs

    CVE-2026-38444 (CVSS 6.1) — osTicket v1.18.3 is vulnerable to Stored Cross-Site Scripting (XSS) via the email From-header display name. Th…
    CVE-2026-38446 (CVSS 6.1) — A stored cross-site scripting (XSS) vulnerability exists in osTicket 1.18.3 due to improper sanitization of th…
    CVE-2026-14871 (CVSS 7.1) — osTicket versions v1.18.3 and v1.17.7 contain a Broken Object Level Authorization (BOLA) leading to Insecure D…
    CVE-2026-36214 (CVSS 6.4) — osTicket versions from 1.10 up to 1.17.7 and from 1.18.0 up to 1.18.3 are vulnerable to a stored XSS due to a …
    CVE-2026-8194 (CVSS 2.1) — A security vulnerability has been detected in osTicket up to 1.18.3. Impacted is an unknown function of the fi…
    CVE-2026-26895 (CVSS 5.3) — User enumeration vulnerability in /pwreset.php in osTicket v1.18.2 allows remote attackers to enumerate valid …
    CVE-2025-9882 (CVSS 6.1) — The osTicket WP Bridge plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to,…
    CVE-2025-45387 (CVSS 5.4) — osTicket prior to v1.17.6 and v1.18.2 are vulnerable to Broken Access Control Vulnerability in /scp/ajax.php.…
    CVE-2025-26241 (CVSS 6.5) — A SQL injection vulnerability in the "Search" functionality of "tickets.php" page in osTicket <=1.17.5 allows …
    CVE-2022-32074 (CVSS 5.4) — A stored cross-site scripting (XSS) vulnerability in the component audit/class.audit.php of osTicket-plugins -…

    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