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    CVE-2016-6798

    In the XSS Protection API module before 1.0.12 in Apache Sling, the method XSS.getValidXML() uses an insecure SAX parser to validate the input string, which allows for XXE attacks in all scripts which use this method to validate user input, potentially allowing an attacker to read sensitive data on the filesystem, perform same-site-request-forgery (SSRF), port-scanning behind the firewall or DoS the application.

    Published:Jul 19, 2017
    Last Modified:Apr 20, 2025
    EPS:Jul 19, 2017
    EPSS Score:0.01343
    CVSS Score:9.8

    Affected Products

    Vendor
    Apache
    Product
    Sling

    Exploits

    https://github.com/tafamace/CVE-2016-6798

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-221 Data Serialization External Entities Blowup

    Related CVEs

    CVE-2022-45064 (CVSS 8) — The SlingRequestDispatcher doesn't correctly implement the RequestDispatcher API resulting in a generic type o…
    CVE-2016-5394 (CVSS 6.1) — In the XSS Protection API module before 1.0.12 in Apache Sling, the encoding done by the XSSAPI.encodeForJSStr…
    CVE-2016-0956 (CVSS 7.5) — The Servlets Post component 2.3.6 in Apache Sling, as used in Adobe Experience Manager 5.6.1, 6.0.0, and 6.1.0…
    CVE-2013-4390 (CVSS 5.8) — Open redirect vulnerability in the AbstractAuthenticationFormServlet in the Auth Core (org.apache.sling.auth.c…
    CVE-2013-2254 (CVSS 5) — The deepGetOrCreateNode function in impl/operations/AbstractCreateOperation.java in org.apache.sling.servlets.…
    CVE-2012-2138 (CVSS 5) — The @CopyFrom operation in the POST servlet in the org.apache.sling.servlets.post bundle before 2.1.2 in Apach…

    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