CVE-2026-1830Quick Playground <= 1.3.1 - Missing Authorization to Unauthenticated Arbitrary File Upload
- 9.8CriticalCVSS base score
- 8.1%Exploitation in 30 daysEPSS · top 5.1% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 2Public exploitsMetasploit, Nuclei and Exploit-DB
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Nuclei template and an Exploit-DB entry for it.
Show the exploits2
Nuclei templates1 template
- Quick Playground <= 1.3.1 - Missing Authorization to Unauthenticated Arbitrary File Upload (Nuclei template) (opens in a new tab)
http/cves/2026/CVE-2026-1830.yamlSeverity critical
Exploit-DB1 entry
- Quick Playground for WordPress 1.3.1 - Unauthenticated Remote Code Execution (Exploit-DB entry) (opens in a new tab)
EDB-ID 52596webapps, multiplepublished 29 May 2026Not verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By Wordfence
- 2 months later
· 2 months later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 8.1% · top 5.1% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
- affected ≤ 1.3.1
References
References4
- https://www.wordfence.com/threat-intel/vulnerabilities/id/308cd28a-a477-4bc6-a392-ad5a9eca1cb5?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/quick-playground/trunk/api.php#L39 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/quick-playground/trunk/expro-api.php#L419 (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3500839%40quick-playground&new=3500839%40quick-playground&sfp_email=&sfph_mail= (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-20843 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-1830)Record last updated .