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    CVE-2026-43504

    An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5, when mod_proxy65 is enabled. Because mod_proxy65 mishandles access control in a paused scenario, relaying of unauthenticated traffic can occur.

    Published:May 1, 2026
    Last Modified:May 2, 2026
    EPS:May 1, 2026
    EPSS Score:
    CVSS Score:6.5

    Affected Products

    Vendor
    Prosody
    Product
    Prosody

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-863 Incorrect Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-43507 (CVSS 5.3) — An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service c…
    CVE-2026-43506 (CVSS 5.3) — An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service c…
    CVE-2026-43505 (CVSS 6.5) — An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5, when mod_proxy65 is e…
    CVE-2022-0217 (CVSS 7.5) — It was discovered that an internal Prosody library to load XML based on libexpat does not properly restrict th…
    CVE-2021-37601 (CVSS 7.5) — muc.lib.lua in Prosody 0.11.0 through 0.11.9 allows remote attackers to obtain sensitive information (list of …
    CVE-2021-32921 (CVSS 5.9) — An issue was discovered in Prosody before 0.11.9. It does not use a constant-time algorithm for comparing cert…
    CVE-2021-32920 (CVSS 7.5) — Prosody before 0.11.9 allows Uncontrolled CPU Consumption via a flood of SSL/TLS renegotiation requests.…
    CVE-2021-32919 (CVSS 7.5) — An issue was discovered in Prosody before 0.11.9. The undocumented dialback_without_dialback option in mod_dia…
    CVE-2021-32918 (CVSS 7.5) — An issue was discovered in Prosody before 0.11.9. Default settings are susceptible to remote unauthenticated d…
    CVE-2021-32917 (CVSS 5.3) — An issue was discovered in Prosody before 0.11.9. The proxy65 component allows open access by default, even if…

    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