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    18 vulnerabilities by OpenSignLabs

    CVE-2026-72549 (GCVE-0-2026-72549)

    Vulnerability from nvd – Published: 2026-08-11 11:10 – Updated: 2026-08-11 15:09
    VLAI
    Title
    OpenSignLabs OpenSign - Information Disclosure
    Summary
    An information disclosure vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to map any email address or username to its internal user objectId via the getUserId Parse cloud function. The function performs no authentication before resolving and returning the internal identifier. An attacker can use this to enumerate user accounts and target subsequent attacks.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 15:09 UTC
    CWE
    • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
    Assigner
    References
    Impacted products
    Vendor Product Version
    OpenSignLabs OpenSign Affected: 0 , ≤ 2.37.0 (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-72548 (GCVE-0-2026-72548)

    Vulnerability from nvd – Published: 2026-08-11 11:09 – Updated: 2026-08-11 15:10
    VLAI
    Title
    OpenSignLabs OpenSign - Information Disclosure
    Summary
    An information disclosure vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to retrieve any organisation tenant record via the gettenant Parse cloud function. The function accepts a contactId parameter and returns the full tenant record without authentication or authorization checks. An attacker can enumerate and disclose tenant configuration data for any organisation in the system.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 15:10 UTC
    CWE
    • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
    Assigner
    References
    Impacted products
    Vendor Product Version
    OpenSignLabs OpenSign Affected: 0 , ≤ 2.37.0 (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-72545 (GCVE-0-2026-72545)

    Vulnerability from nvd – Published: 2026-08-11 11:09 – Updated: 2026-08-11 15:07
    VLAI
    Title
    OpenSignLabs OpenSign - Insecure Direct Object Reference
    Summary
    An insecure direct object reference vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to write to any contact record via the updatecontacttour Parse cloud function. The function performs no authentication or authorization before updating the target contact record. An attacker can corrupt or overwrite contact data for any user in the system without credentials.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 15:07 UTC
    CWE
    • CWE-639 - Authorization Bypass Through User-Controlled Key
    Assigner
    References
    Impacted products
    Vendor Product Version
    OpenSignLabs OpenSign Affected: 0 , ≤ 2.37.0 (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-72544 (GCVE-0-2026-72544)

    Vulnerability from nvd – Published: 2026-08-11 11:09 – Updated: 2026-08-11 12:24
    VLAI
    Title
    OpenSignLabs OpenSign - Insufficient Verification of Data Authenticity
    Summary
    An integrity verification vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to forge document audit-trail entries via the triggerevent Parse cloud function. The function accepts viewer identity and IP address as caller-supplied parameters without authentication, allowing fabrication of arbitrary audit log entries. An attacker can tamper with the legal audit trail of any signed document, undermining non-repudiation.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 12:24 UTC
    CWE
    • CWE-345 - Insufficient Verification of Data Authenticity
    Assigner
    References
    Impacted products
    Vendor Product Version
    OpenSignLabs OpenSign Affected: 0 , ≤ 2.37.0 (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-72543 (GCVE-0-2026-72543)

    Vulnerability from nvd – Published: 2026-08-11 11:08 – Updated: 2026-08-11 14:48
    VLAI
    Title
    OpenSignLabs OpenSign - Insecure Direct Object Reference
    Summary
    An insecure direct object reference vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to retrieve any contact record via the getcontact Parse cloud function. The function executes with useMasterKey and performs no authentication or authorization checks before returning the requested contact object. An attacker can enumerate and read all contact records including personally identifiable information without credentials.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 14:47 UTC
    CWE
    • CWE-639 - Authorization Bypass Through User-Controlled Key
    Assigner
    References
    Impacted products
    Vendor Product Version
    OpenSignLabs OpenSign Affected: 0 , ≤ 2.37.0 (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-72692 (GCVE-0-2026-72692)

    Vulnerability from nvd – Published: 2026-08-10 11:59 – Updated: 2026-08-10 18:21
    VLAI
    Title
    OpenSignLabs opensignserver - Missing Authorization
    Summary
    A missing authorization vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to irreversibly decline any in-flight document and forge the decline attribution to an arbitrary user via the declinedoc Parse cloud function. The function writes IsDeclined, DeclineReason, and a caller-supplied DeclineBy pointer without verifying the caller's identity, enabling workflow termination and evidentiary record falsification against any accessible document.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-10 15:35 UTC
    CWE
    Assigner
    References
    URL Tags
    https://github.com/OpenSignLabs/OpenSign third-party-advisory
    Impacted products
    Vendor Product Version
    OpenSignLabs opensignserver Affected: 0 , ≤ 2.37.0 (semver)
    Create a notification for this product.
    Date Public
    2026-08-10 12:00
    Show details on NVD website

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    CVE-2026-72691 (GCVE-0-2026-72691)

    Vulnerability from nvd – Published: 2026-08-10 11:59 – Updated: 2026-08-10 18:22
    VLAI
    Title
    OpenSignLabs opensignserver - Authentication Bypass
    Summary
    An authentication bypass vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to mint MASTER_KEY-signed file access tokens for arbitrary stored files via the getsignedurl Parse cloud function. The function skips its isAuthenticated check whenever any docId parameter is supplied, even one corresponding to no real document, allowing the authentication gate to be bypassed by supplying an arbitrary string as docId.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-10 15:37 UTC
    CWE
    • CWE-288 - Authentication Bypass Using an Alternate Path or Channel
    Assigner
    References
    URL Tags
    https://github.com/OpenSignLabs/OpenSign third-party-advisory
    Impacted products
    Vendor Product Version
    OpenSignLabs opensignserver Affected: 0 , ≤ 2.37.0 (semver)
    Create a notification for this product.
    Date Public
    2026-08-10 12:00
    Show details on NVD website

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    CVE-2026-72689 (GCVE-0-2026-72689)

    Vulnerability from nvd – Published: 2026-08-10 11:59 – Updated: 2026-08-10 18:22
    VLAI
    Title
    OpenSignLabs opensignserver - Broken Object Level Authorization
    Summary
    A broken object-level authorization vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to read complete contract records via the getDocument Parse cloud function. The function fetches documents using useMasterKey, bypassing the object ACL, and returns full records including sender and signer PII and a pre-signed document download URL whenever the document's IsEnableOTP flag is unset, which is the default configuration.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-10 15:48 UTC
    CWE
    • CWE-639 - Authorization Bypass Through User-Controlled Key
    Assigner
    References
    URL Tags
    https://github.com/OpenSignLabs/OpenSign third-party-advisory
    Impacted products
    Vendor Product Version
    OpenSignLabs opensignserver Affected: 0 , ≤ 2.37.0 (semver)
    Create a notification for this product.
    Date Public
    2026-08-10 12:00
    Show details on NVD website

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    CVE-2026-72688 (GCVE-0-2026-72688)

    Vulnerability from nvd – Published: 2026-08-10 11:59 – Updated: 2026-08-10 18:22
    VLAI
    Title
    OpenSignLabs opensignserver - Missing Authentication for Critical Function
    Summary
    A missing authentication vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to read arbitrary stored documents via the fileupload Parse cloud function. The function mints MASTER_KEY-signed file access tokens for any caller-supplied URL without performing any session check, defeating the only access control protecting stored contract files.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-10 15:51 UTC
    CWE
    • CWE-306 - Missing Authentication for Critical Function
    Assigner
    References
    URL Tags
    https://github.com/OpenSignLabs/OpenSign third-party-advisory
    Impacted products
    Vendor Product Version
    OpenSignLabs opensignserver Affected: 0 , ≤ 2.37.0 (semver)
    Create a notification for this product.
    Date Public
    2026-08-10 12:00
    Show details on NVD website

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    CVE-2026-72549 (GCVE-0-2026-72549)

    Vulnerability from cvelistv5 – Published: 2026-08-11 11:10 – Updated: 2026-08-11 15:09
    VLAI
    Title
    OpenSignLabs OpenSign - Information Disclosure
    Summary
    An information disclosure vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to map any email address or username to its internal user objectId via the getUserId Parse cloud function. The function performs no authentication before resolving and returning the internal identifier. An attacker can use this to enumerate user accounts and target subsequent attacks.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 15:09 UTC
    CWE
    • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
    Assigner
    References
    Impacted products
    Vendor Product Version
    OpenSignLabs OpenSign Affected: 0 , ≤ 2.37.0 (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-72548 (GCVE-0-2026-72548)

    Vulnerability from cvelistv5 – Published: 2026-08-11 11:09 – Updated: 2026-08-11 15:10
    VLAI
    Title
    OpenSignLabs OpenSign - Information Disclosure
    Summary
    An information disclosure vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to retrieve any organisation tenant record via the gettenant Parse cloud function. The function accepts a contactId parameter and returns the full tenant record without authentication or authorization checks. An attacker can enumerate and disclose tenant configuration data for any organisation in the system.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 15:10 UTC
    CWE
    • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
    Assigner
    References
    Impacted products
    Vendor Product Version
    OpenSignLabs OpenSign Affected: 0 , ≤ 2.37.0 (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-72545 (GCVE-0-2026-72545)

    Vulnerability from cvelistv5 – Published: 2026-08-11 11:09 – Updated: 2026-08-11 15:07
    VLAI
    Title
    OpenSignLabs OpenSign - Insecure Direct Object Reference
    Summary
    An insecure direct object reference vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to write to any contact record via the updatecontacttour Parse cloud function. The function performs no authentication or authorization before updating the target contact record. An attacker can corrupt or overwrite contact data for any user in the system without credentials.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 15:07 UTC
    CWE
    • CWE-639 - Authorization Bypass Through User-Controlled Key
    Assigner
    References
    Impacted products
    Vendor Product Version
    OpenSignLabs OpenSign Affected: 0 , ≤ 2.37.0 (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-72544 (GCVE-0-2026-72544)

    Vulnerability from cvelistv5 – Published: 2026-08-11 11:09 – Updated: 2026-08-11 12:24
    VLAI
    Title
    OpenSignLabs OpenSign - Insufficient Verification of Data Authenticity
    Summary
    An integrity verification vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to forge document audit-trail entries via the triggerevent Parse cloud function. The function accepts viewer identity and IP address as caller-supplied parameters without authentication, allowing fabrication of arbitrary audit log entries. An attacker can tamper with the legal audit trail of any signed document, undermining non-repudiation.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 12:24 UTC
    CWE
    • CWE-345 - Insufficient Verification of Data Authenticity
    Assigner
    References
    Impacted products
    Vendor Product Version
    OpenSignLabs OpenSign Affected: 0 , ≤ 2.37.0 (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-72543 (GCVE-0-2026-72543)

    Vulnerability from cvelistv5 – Published: 2026-08-11 11:08 – Updated: 2026-08-11 14:48
    VLAI
    Title
    OpenSignLabs OpenSign - Insecure Direct Object Reference
    Summary
    An insecure direct object reference vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to retrieve any contact record via the getcontact Parse cloud function. The function executes with useMasterKey and performs no authentication or authorization checks before returning the requested contact object. An attacker can enumerate and read all contact records including personally identifiable information without credentials.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 14:47 UTC
    CWE
    • CWE-639 - Authorization Bypass Through User-Controlled Key
    Assigner
    References
    Impacted products
    Vendor Product Version
    OpenSignLabs OpenSign Affected: 0 , ≤ 2.37.0 (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-72692 (GCVE-0-2026-72692)

    Vulnerability from cvelistv5 – Published: 2026-08-10 11:59 – Updated: 2026-08-10 18:21
    VLAI
    Title
    OpenSignLabs opensignserver - Missing Authorization
    Summary
    A missing authorization vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to irreversibly decline any in-flight document and forge the decline attribution to an arbitrary user via the declinedoc Parse cloud function. The function writes IsDeclined, DeclineReason, and a caller-supplied DeclineBy pointer without verifying the caller's identity, enabling workflow termination and evidentiary record falsification against any accessible document.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-10 15:35 UTC
    CWE
    Assigner
    References
    URL Tags
    https://github.com/OpenSignLabs/OpenSign third-party-advisory
    Impacted products
    Vendor Product Version
    OpenSignLabs opensignserver Affected: 0 , ≤ 2.37.0 (semver)
    Create a notification for this product.
    Date Public
    2026-08-10 12:00
    Show details on NVD website

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    CVE-2026-72691 (GCVE-0-2026-72691)

    Vulnerability from cvelistv5 – Published: 2026-08-10 11:59 – Updated: 2026-08-10 18:22
    VLAI
    Title
    OpenSignLabs opensignserver - Authentication Bypass
    Summary
    An authentication bypass vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to mint MASTER_KEY-signed file access tokens for arbitrary stored files via the getsignedurl Parse cloud function. The function skips its isAuthenticated check whenever any docId parameter is supplied, even one corresponding to no real document, allowing the authentication gate to be bypassed by supplying an arbitrary string as docId.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-10 15:37 UTC
    CWE
    • CWE-288 - Authentication Bypass Using an Alternate Path or Channel
    Assigner
    References
    URL Tags
    https://github.com/OpenSignLabs/OpenSign third-party-advisory
    Impacted products
    Vendor Product Version
    OpenSignLabs opensignserver Affected: 0 , ≤ 2.37.0 (semver)
    Create a notification for this product.
    Date Public
    2026-08-10 12:00
    Show details on NVD website

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    CVE-2026-72689 (GCVE-0-2026-72689)

    Vulnerability from cvelistv5 – Published: 2026-08-10 11:59 – Updated: 2026-08-10 18:22
    VLAI
    Title
    OpenSignLabs opensignserver - Broken Object Level Authorization
    Summary
    A broken object-level authorization vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to read complete contract records via the getDocument Parse cloud function. The function fetches documents using useMasterKey, bypassing the object ACL, and returns full records including sender and signer PII and a pre-signed document download URL whenever the document's IsEnableOTP flag is unset, which is the default configuration.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-10 15:48 UTC
    CWE
    • CWE-639 - Authorization Bypass Through User-Controlled Key
    Assigner
    References
    URL Tags
    https://github.com/OpenSignLabs/OpenSign third-party-advisory
    Impacted products
    Vendor Product Version
    OpenSignLabs opensignserver Affected: 0 , ≤ 2.37.0 (semver)
    Create a notification for this product.
    Date Public
    2026-08-10 12:00
    Show details on NVD website

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    CVE-2026-72688 (GCVE-0-2026-72688)

    Vulnerability from cvelistv5 – Published: 2026-08-10 11:59 – Updated: 2026-08-10 18:22
    VLAI
    Title
    OpenSignLabs opensignserver - Missing Authentication for Critical Function
    Summary
    A missing authentication vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to read arbitrary stored documents via the fileupload Parse cloud function. The function mints MASTER_KEY-signed file access tokens for any caller-supplied URL without performing any session check, defeating the only access control protecting stored contract files.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-10 15:51 UTC
    CWE
    • CWE-306 - Missing Authentication for Critical Function
    Assigner
    References
    URL Tags
    https://github.com/OpenSignLabs/OpenSign third-party-advisory
    Impacted products
    Vendor Product Version
    OpenSignLabs opensignserver Affected: 0 , ≤ 2.37.0 (semver)
    Create a notification for this product.
    Date Public
    2026-08-10 12:00
    Show details on NVD website

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