Quick answers
- Is CVE-2026-72545 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-72545 being exploited in the wild.
- How severe is CVE-2026-72545?
- High severity, with a CVSS score of 7.5, published 11 August 2026.
- Which products and versions are affected?
- OpenSignLabs OpenSign through 2.37.0.
- Is there a fix for CVE-2026-72545?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-72545 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-72545?
- Check whether you run OpenSignLabs OpenSign at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An insecure direct object reference (IDOR) vulnerability exists in the updatecontacttour Parse cloud function in OpenSign through version 2.37.0. The function fails to perform authentication or authorization checks before updating contact records, allowing unauthenticated remote attackers to modify any contact record by directly specifying the target object ID. An attacker can corrupt, overwrite, or delete contact data for arbitrary users without requiring credentials or valid authentication tokens, potentially enabling account hijacking or data manipulation attacks.
Affected products
- OpenSignLabs OpenSign through 2.37.0
Timeline
- 2026-08-11: disclosed