Quick answers
- Is CVE-2026-48082 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-48082 being exploited in the wild.
- How severe is CVE-2026-48082?
- Low severity, with a CVSS score of 3.7, published 6 August 2026.
- Which products and versions are affected?
- OpenReception Appointment-Booking-Software prior to 1.0.6.
- Is there a fix for CVE-2026-48082?
- A patch was published on 2026-08-06: Version 1.0.6 released with increased difficulty from 4 to 5 hex zeros Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-48082 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-48082?
- Check whether you run OpenReception Appointment-Booking-Software 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
The bootstrap challenge endpoint at `/api/tenants/{id}/appointments/bootstrap-challenge` implements a SHA-256 proof-of-work mechanism with a hardcoded difficulty of 4 hex zeros (16 bits), intended to rate-limit unauthenticated clients. However, modern hardware solves this challenge in under 200 milliseconds using unoptimized code, providing negligible friction. Additionally, the throttle check uses attacker-controlled parameters (tunnelId, clientPublicKey, emailHash) to generate throttle keys, allowing an attacker to bypass per-binding rate-limiting by supplying fresh values on each request. An attacker can rapidly generate bootstrap challenges and solve them without meaningful server-side friction, enabling bulk abuse of the appointment booking flow and amplification of credential poisoning attacks. Version 1.0.6 increases the difficulty to 5 hex zeros; a more comprehensive fix should tune difficulty to a target solve time of 1–4 seconds on representative client hardware.
Affected products
- OpenReception appointment booking software prior to 1.0.6
Timeline
- 2026-05-20: disclosed: GHSA-hm9g-mh7x-657g published on GitHub security advisory
- 2026-08-06: advisory: CVE-2026-48082 published on NVD
- 2026-08-06: patched: Version 1.0.6 released with increased difficulty from 4 to 5 hex zeros