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    5 vulnerabilities by hashgraph

    CVE-2026-22674 (GCVE-0-2026-22674)

    Vulnerability from cvelistv5 – Published: 2026-06-18 21:08 – Updated: 2026-06-23 11:39 X_Open Source
    VLAI
    Title
    Hashgraph Guardian Stored XSS via branding companyName field
    Summary
    Hashgraph Guardian through 3.6.0, fixed in commit ba8c566, contains a stored cross-site scripting vulnerability that allows authenticated users with the STANDARD_REGISTRY role to inject malicious scripts by submitting a crafted companyName value via the branding configuration API endpoint. Attackers can exploit the unsanitized innerHTML assignment in the branding service to execute arbitrary JavaScript in the browser of every authenticated user on every page load.
    Severity
    4.8 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
    4.8 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    hashgraph guardian Affected: 0 , ≤ 3.6.0 (semver)
    Unaffected: ba8c566807848cf84360716438056d8d8d2c8362 (git)
    		Create a notification for this product.
    Date Public
    2026-06-10 00:00
    Credits
    Christ Bouchuen
    Show details on NVD website
    To clipboard 

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    CVE-2026-45248 (GCVE-0-2026-45248)

    Vulnerability from cvelistv5 – Published: 2026-05-14 21:36 – Updated: 2026-05-16 01:07 X_Open Source
    VLAI
    Title
    Hedera Guardian Authentication Bypass Information Disclosure
    Summary
    Hedera Guardian through 3.5.1 contains an authentication bypass vulnerability in the GET /api/v1/demo/registered-users endpoint that allows unauthenticated attackers to retrieve sensitive user information. Attackers can access the endpoint without providing authentication credentials to obtain usernames, Hedera DIDs, parent registry DIDs, system roles, and policy role assignments for all registered users in the system.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
    5.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-306 - Missing Authentication for Critical Function
    Assigner
    References
    Impacted products
    Vendor Product Version
    hashgraph guardian Affected: 0 , ≤ 3.5.1 (semver)
    		Create a notification for this product.
    Date Public
    2026-05-14 00:00
    Credits
    Christ Bouchuen
    Show details on NVD website
    To clipboard 

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    CVE-2026-39911 (GCVE-0-2026-39911)

    Vulnerability from cvelistv5 – Published: 2026-04-09 17:57 – Updated: 2026-06-23 16:16
    VLAI
    Title
    Hashgraph Guardian 3.5.1 Unsandboxed JavaScript Execution RCE
    Summary
    Hashgraph Guardian through version 3.5.1, fixed in commit 45fbe2f, contains an unsandboxed JavaScript execution vulnerability in the Custom Logic policy block worker that allows authenticated Standard Registry users to execute arbitrary code by passing user-supplied JavaScript expressions directly to the Node.js Function() constructor without isolation. Attackers can import native Node.js modules to read arbitrary files from the container filesystem, access process environment variables containing sensitive credentials such as RSA private keys, JWT signing keys, and API tokens, and forge valid authentication tokens for any user including administrators.
    Severity
    8.7 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    8.8 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-668 - Exposure of Resource to Wrong Sphere
    Assigner
    References
    Impacted products
    Vendor Product Version
    hashgraph guardian Affected: 0 , ≤ 3.5.1 (semver)
    Unaffected: 45fbe2f7e0e8feee30105d42d66ed63fb6177ebe (git)
    		Create a notification for this product.
    Date Public
    2026-04-10 00:00
    Credits
    Christ Bouchuen
    Show details on NVD website
    To clipboard 

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    CVE-2026-45248 (GCVE-0-2026-45248)

    Vulnerability from nvd – Published: 2026-05-14 21:36 – Updated: 2026-05-16 01:07 X_Open Source
    VLAI
    Title
    Hedera Guardian Authentication Bypass Information Disclosure
    Summary
    Hedera Guardian through 3.5.1 contains an authentication bypass vulnerability in the GET /api/v1/demo/registered-users endpoint that allows unauthenticated attackers to retrieve sensitive user information. Attackers can access the endpoint without providing authentication credentials to obtain usernames, Hedera DIDs, parent registry DIDs, system roles, and policy role assignments for all registered users in the system.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
    5.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-306 - Missing Authentication for Critical Function
    Assigner
    References
    Impacted products
    Vendor Product Version
    hashgraph guardian Affected: 0 , ≤ 3.5.1 (semver)
    		Create a notification for this product.
    Date Public
    2026-05-14 00:00
    Credits
    Christ Bouchuen
    Show details on NVD website
    To clipboard 

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    CVE-2026-39911 (GCVE-0-2026-39911)

    Vulnerability from nvd – Published: 2026-04-09 17:57 – Updated: 2026-06-23 16:16
    VLAI
    Title
    Hashgraph Guardian 3.5.1 Unsandboxed JavaScript Execution RCE
    Summary
    Hashgraph Guardian through version 3.5.1, fixed in commit 45fbe2f, contains an unsandboxed JavaScript execution vulnerability in the Custom Logic policy block worker that allows authenticated Standard Registry users to execute arbitrary code by passing user-supplied JavaScript expressions directly to the Node.js Function() constructor without isolation. Attackers can import native Node.js modules to read arbitrary files from the container filesystem, access process environment variables containing sensitive credentials such as RSA private keys, JWT signing keys, and API tokens, and forge valid authentication tokens for any user including administrators.
    Severity
    8.7 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    8.8 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-668 - Exposure of Resource to Wrong Sphere
    Assigner
    References
    Impacted products
    Vendor Product Version
    hashgraph guardian Affected: 0 , ≤ 3.5.1 (semver)
    Unaffected: 45fbe2f7e0e8feee30105d42d66ed63fb6177ebe (git)
    		Create a notification for this product.
    Date Public
    2026-04-10 00:00
    Credits
    Christ Bouchuen
    Show details on NVD website
    To clipboard 

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