CVE-2026-72544

highCVSS 7.5covered by 1 sourcefirst seen 2026-08-11

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.

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Exploitation outlook

Low exploitation risk0.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all EPSS-scored CVEs.

Advisory coverage (1)

highCVE-2026-72544: An integrity verification vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthe…nvd · 2026-08-11

External references

NVD record for CVE-2026-72544

CVE.org record

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