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    CVE-2026-72544

    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.

    Published:Aug 11, 2026
    Last Modified:Aug 13, 2026
    EPS:Aug 11, 2026
    EPSS Score:0.00203
    CVSS Score:7.5

    Affected Products

    Vendor
    Opensignlabs
    Product
    Opensignserver

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-72549 (CVSS 5.3) — An information disclosure vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote …
    CVE-2026-72548 (CVSS 7.5) — An information disclosure vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote …
    CVE-2026-72543 (CVSS 7.5) — An insecure direct object reference vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticat…
    CVE-2026-72692 (CVSS 7.5) — A missing authorization vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated …
    CVE-2026-72691 (CVSS 7.5) — An authentication bypass vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated…
    CVE-2026-72689 (CVSS 7.5) — A broken object-level authorization vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unau…
    CVE-2026-72688 (CVSS 7.5) — A missing authentication vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated…

    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