CVE-2026-1830 json
Quick Playground <= 1.3.1 - Missing Authorization to Unauthenticated Arbitrary File Upload
published 7mo ago modified 4mo ago also EUVD-2026-20843
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 8.1%
- EPSS 8.1% chance of exploitation in 30 days, percentile 94%
- public exploits
- 1
- Exploit-DB, plus a Nuclei check
Summary
The Quick Playground plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1.3.1. This is due to insufficient authorization checks on REST API endpoints that expose a sync code and allow arbitrary file uploads. This makes it possible for unauthenticated attackers to retrieve the sync code, upload PHP files with path traversal, and achieve remote code execution on the server.
Is CVE-2026-1830 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerTimeline
- Published
- First public exploit (EDB-52596)
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 7mo ago
Exploit prediction
8.10% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- EDB-52596 Quick Playground for WordPress 1.3.1 - Unauthenticated Remote Code Execution webapps, 2026-05-29
- Nuclei template Quick Playground <= 1.3.1 - Missing Authorization to Unauthenticated Arbitrary File Upload nuclei detection template
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- davidfcarr Quick Playground
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/308cd28a-a477-4bc6-a392-ad5a9eca1cb5?source=cve
- plugins.trac.wordpress.org /browser/quick-playground/trunk/api.php#L39
- plugins.trac.wordpress.org /browser/quick-playground/trunk/expro-api.php#L419
- plugins.trac.wordpress.org /changeset?sfp_email=&sfph_mail=&reponame=&old=3500839%40quick-playground&new=3500839%40quick-playground&sfp_e
Sources
- CVE List CVE-2026-1830
- NVD CVE-2026-1830
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.