CVE Feed

    Dashboard / CVE / CVE-2020-15813

    CVE-2020-15813

    Graylog before 3.3.3 lacks SSL Certificate Validation for LDAP servers. It allows use of an external user/group database stored in LDAP. The connection configuration allows the usage of unencrypted, SSL- or TLS-secured connections. Unfortunately, the Graylog client code (in all versions that support LDAP) does not implement proper certificate validation (regardless of whether the "Allow self-signed certificates" option is used). Therefore, any attacker with the ability to intercept network traffic between a Graylog server and an LDAP server is able to redirect traffic to a different LDAP server (unnoticed by the Graylog server due to the lack of certificate validation), effectively bypassing Graylog's authentication mechanism.

    Published:Jul 17, 2020
    Last Modified:Nov 21, 2024
    EPS:Jul 17, 2020
    EPSS Score:0.00192
    CVSS Score:8.1

    Affected Products

    Vendor
    Graylog
    Product
    Graylog

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-295 Improper Certificate Validation

    Related CVEs

    CVE-2026-1441 (CVSS 5.3) — Reflected Cross-Site Scripting (XSS) vulnerability in the Graylog Web Interface console, version 2.2.3, caused…
    CVE-2026-1440 (CVSS 5.3) — Reflected Cross-Site Scripting (XSS) vulnerability in the Graylog Web Interface console, version 2.2.3, caused…
    CVE-2026-1439 (CVSS 5.3) — Reflected Cross-Site Scripting (XSS) vulnerability in the Graylog Web Interface console, version 2.2.3, caused…
    CVE-2026-1438 (CVSS 5.3) — Reflected Cross-Site Scripting (XSS) vulnerability in the Graylog Web Interface console, version 2.2.3, caused…
    CVE-2026-1437 (CVSS 5.3) — Reflected Cross-Site Scripting (XSS) vulnerability in the Graylog Web Interface console, version 2.2.3, caused…
    CVE-2026-1436 (CVSS 7.1) — Improper Access Control (IDOR) in the Graylog API, version 2.2.3, which occurs when modifying the user ID in t…
    CVE-2026-1435 (CVSS 9.3) — Not properly invalidated session vulnerability in Graylog Web Interface, version 2.2.3, due to incorrect manag…
    CVE-2025-53106 (CVSS 8.8) — Graylog is a free and open log management platform. In versions 6.2.0 to before 6.2.4 and 6.3.0-alpha.1 to bef…
    CVE-2025-46827 (CVSS 8) — Graylog is a free and open log management platform. Prior to versions 6.0.14, 6.1.10, and 6.2.0, it is possibl…
    CVE-2025-30373 (CVSS 6.5) — Graylog is a free and open log management platform. Starting with 6.1, HTTP Inputs can be configured to check …

    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