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    CVE-2021-26084

    In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance. The affected versions are before version 6.13.23, from version 6.14.0 before 7.4.11, from version 7.5.0 before 7.11.6, and from version 7.12.0 before 7.12.5.

    Published:Aug 30, 2021
    Last Modified:Dec 16, 2025
    EPS:Aug 30, 2021
    EPSS Score:0.9444
    CVSS Score:9.8

    CISA Notification

    Description

    In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance. The affected versions are before version 6.13.23, from version 6.14.0 before 7.4.11, from version 7.5.0 before 7.11.6, and from version 7.12.0 before 7.12.5.

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    Nov 17, 2021
    1759 days ago
    Alert Date
    Nov 3, 2021
    1773 days ago

    Affected Products

    Vendor
    Atlassian
    Product
    Confluence Data Center
    Vendor
    Atlassian
    Product
    Confluence Server

    Exploits

    http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.htmlhttp://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.htmlhttps://www.exploit-db.com/exploits/50243https://github.com/0xf4n9x/CVE-2021-26084https://github.com/1ZRR4H/CVE-2021-26084https://github.com/30579096/Confluence-CVE-2021-26084https://github.com/alt3kx/CVE-2021-26084_PoChttps://github.com/attacker-codeninja/CVE-2021-26084https://github.com/b1gw00d/CVE-2021-26084https://github.com/BBD-YZZ/Confluence-RCEhttps://github.com/bcdannyboy/CVE-2021-26084_GoPOChttps://github.com/BeRserKerSec/CVE-2021-26084-Nuclei-templatehttps://github.com/CrackerCat/CVE-2021-26084https://github.com/crowsec-edtech/CVE-2021-26084https://github.com/dinhbaouit/CVE-2021-26084https://github.com/GlennPegden2/cve-2021-26084-confluencehttps://github.com/hev0x/CVE-2021-26084_Confluencehttps://github.com/JKme/CVE-2021-26084https://github.com/Jun-5heng/CVE-2021-26084https://github.com/lleavesl/CVE-2021-26084https://github.com/Loneyers/CVE-2021-26084https://github.com/ludy-dev/CVE-2021-26084_PoChttps://github.com/maskerTUI/CVE-2021-26084https://github.com/nahcusira/CVE-2021-26084https://github.com/nizar0x1f/CVE-2021-26084-patch-https://github.com/orangmuda/CVE-2021-26084https://github.com/Osyanina/westone-CVE-2021-26084-scannerhttps://github.com/p0nymc1/CVE-2021-26084https://github.com/prettyrecon/CVE-2021-26084_Confluencehttps://github.com/quesodipesto/conflucheckhttps://github.com/smadi0x86/CVE-2021-26084https://github.com/smallpiggy/cve-2021-26084-confluencehttps://github.com/taythebot/CVE-2021-26084https://github.com/TheclaMcentire/CVE-2021-26084_Confluencehttps://github.com/toowoxx/docker-confluence-patchedhttps://github.com/Vulnmachines/Confluence_CVE-2021-26084https://github.com/wdjcy/CVE-2021-26084https://github.com/wolf1892/confluence-rce-pochttps://github.com/Xc1Ym/cve_2021_26084https://github.com/ZZ-SOCMAP/CVE-2021-26084

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    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