CVE-2018-1000773 json
WordPress version 4.9.8 and earlier contains a CWE-20 Input Validation vulnerability in thumbnail processing that can result in remote code…
published 2018-09-06 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-2003
- cvss
- 8.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 8.3%
- EPSS 8.3% chance of exploitation in 30 days, percentile 94%
- public exploits
- 0
- none known
Summary
WordPress version 4.9.8 and earlier contains a CWE-20 Input Validation vulnerability in thumbnail processing that can result in remote code execution due to an incomplete fix for CVE-2017-1000600. This attack appears to be exploitable via thumbnail upload by an authenticated user and may require additional plugins in order to be exploited however this has not been confirmed at this time.
Exploit prediction
8.34% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
- Technology feeds
References
-
youtu.be
/GePBmsNJw6Y?t=1763
third-party-advisory
-
theregister.co.uk
/2018/08/20/php_unserialisation_wordpress_vuln/
third-party-advisory
-
securityfocus.com
/bid/105306
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2018-1000773
- NVD CVE-2018-1000773
Fencer Vulns 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.