Is CVE-2026-72545 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-72545?

CVE-2026-72545 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-72545

Description

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.