CVE-2026-3620 json
Word Replacer <= 0.4 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'Replacement' Parameter
published 5mo ago modified 3mo ago also EUVD-2026-33895
- cvss
- 4.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 15%
- public exploits
- 0
- none known
Summary
The Word Replacer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'replacement' parameter in all versions up to, and including, 0.4. This is due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Is CVE-2026-3620 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 FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5mo ago
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.4 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N |
Affected products
- takien Word Replacer
Classification
- Weakness
-
- CWE-20 Improper Input Validation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/b827f0e1-b8ee-4015-a608-45505f43b324?source=cve
- plugins.trac.wordpress.org /browser/word-replacer/trunk/word-replacer.php#L339
- plugins.trac.wordpress.org /browser/word-replacer/tags/0.4/word-replacer.php#L339
- plugins.trac.wordpress.org /browser/word-replacer/trunk/word-replacer.php#L343
- plugins.trac.wordpress.org /browser/word-replacer/tags/0.4/word-replacer.php#L343
- plugins.trac.wordpress.org /browser/word-replacer/trunk/word-replacer.php#L191
- plugins.trac.wordpress.org /browser/word-replacer/tags/0.4/word-replacer.php#L191
- plugins.trac.wordpress.org /browser/word-replacer/trunk/word-replacer.php#L230
- plugins.trac.wordpress.org /browser/word-replacer/tags/0.4/word-replacer.php#L230
Sources
- CVE List CVE-2026-3620
- NVD CVE-2026-3620
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.