CVE-2023-24058 — Booked Scheduler 2
Booked Scheduler 2.5.5 allows authenticated users to create and schedule events for any other user via a modified userId value to reservation_save.php. NOTE: 2.5.5 is a version from 2014; the latest version of Booked Scheduler is not affected. However, LabArchives Scheduler (Sep
Published
2023-01-22T00:00:00.000Z
Last modified
2025-04-02T16:09:24.559Z
01What is this vulnerability?
Booked Scheduler 2.5.5 allows authenticated users to create and schedule events for any other user via a modified userId value to reservation_save.php. NOTE: 2.5.5 is a version from 2014; the latest version of Booked Scheduler is not affected. However, LabArchives Scheduler (Sep 6, 2022 Feature Release) is affected.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2023-01-22T00:00:00.000Z
- Last modified: 2025-04-02T16:09:24.559Z
09References
- s1n1st3r.gitbook.io — https://s1n1st3r.gitbook.io/theb10g/booked-scheduler-v2.5.5-vulnerability
- www.limswiki.org — https://www.limswiki.org/index.php/Booked
- github.com — https://github.com/LibreBooking/app/tags?after=2.7.1
- github.com — https://github.com/LibreBooking/app/blob/0a6cb1a9eb84835553c8caf93db2791f8655140…
- github.com — https://github.com/LibreBooking/app/blob/0a6cb1a9eb84835553c8caf93db2791f8655140…
- www.labarchives.com — https://www.labarchives.com/labarchives-knowledge-base/2022-feature-releases-2/
- www.bookedscheduler.com — https://www.bookedscheduler.com/the-future-of-booked/
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