CVE-2026-123131 GemBooking < 1.7.1 - Staff+ Arbitrary Post Deletion and Site Settings Update via REST Context Check Bypass
Medium 5.9
Published
Updated
Check this codebase for CVE-2026-123131 and fix it if it is affected.
What it is: CVE-2026-123131 is a medium-severity vulnerability in Unknown GemBooking, published on 9 Nov 2026.
Exploitation: There is no known exploitation of CVE-2026-123131 in the wild and no public exploit code.
Affected product: Unknown GemBooking. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-123131/ (Markdown: https://insights.sbomify.com/CVE-2026-123131/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-123131?
CVE-2026-123131 is a medium-severity vulnerability in Unknown GemBooking, published on 9 Nov 2026.
Official description
The GemBooking WordPress plugin before 1.7.1 does not properly verify that a REST request is addressed to its own routes before temporarily granting staff users administrative capabilities, allowing users with the GemBooking WordPress plugin before 1.7.1's Staff role to delete arbitrary posts and update the site's settings.
Weakness: CWE-863
Which versions are affected by CVE-2026-123131?
How do I fix CVE-2026-123131?
No fix has been published for CVE-2026-123131 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-123131 being exploited?
There is no known exploitation of CVE-2026-123131 in the wild and no public exploit code.
Sources
Also known as GHSA-frjm-xwcq-24jh.