CVE-2026-6443Essentialplugin Plugins (Various Versions) - Injected Backdoor
- 9.8CriticalCVSS base score
- 0.50%Exploitation in 30 daysEPSS · top 56% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
All plugins by Essentialplugin for WordPress are vulnerable to an injected backdoor in various versions. This is due to the plugin being sold to a malicious threat actor that embedded a backdoor in all of the plugin's they acquired. This makes it possible for the threat actor to maintain a persistent backdoor and inject spam into the affected sites.
Timeline
ID reserved
By Wordfence
- 1 day later
· 1 day later
Published
- 4 days later
· 4 days later
Record updated
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)
- 0.50% · top 56% 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
essentialplugin · Accordion and Accordion Slider
- affected 1.4.6
essentialplugin · Portfolio and Projects
- affected 1.5.6
essentialplugin · Featured Post Creative
- affected 1.5.7
essentialplugin · Post grid and filter ultimate
- affected 1.7.4
essentialplugin · WP Featured Content and Slider
- affected 1.7.6
essentialplugin · Post Ticker Ultimate
- affected 1.7.6
essentialplugin · Trending/Popular Post Slider and Widget
- affected 1.8.6
essentialplugin · Meta Slider and Carousel with Lightbox
- affected 2.0.8
essentialplugin · Album and Image Gallery Plus Lightbox
- affected 2.1.8
essentialplugin · Timeline and History slider
- affected 2.4.5
essentialplugin · WP Blog and Widgets
- affected 2.6.6
essentialplugin · Countdown Timer Ultimate
- affected 2.6.9
essentialplugin · Blog Designer – Post and Widget
- affected 2.7.7
essentialplugin · Team Slider and Team Grid Showcase plus Team Carousel
- affected 2.8.6
essentialplugin · Video gallery and Player
- affected 2.8.7
essentialplugin · Popup Maker and Popup Anything – Popup for opt-ins and Lead Generation Conversions
- affected 2.9.1
essentialplugin · Testimonial Grid and Testimonial Slider plus Carousel with Rotator Widget
- affected 3.5.6
essentialplugin · WP Responsive Recent Post Slider/Carousel
- affected 3.7.1
essentialplugin · WP Slick Slider and Image Carousel
- affected 3.7.8.1
essentialplugin · WP Logo Showcase Responsive Slider and Carousel
- affected 3.8.7
essentialplugin · WP responsive FAQ with category plugin
- affected 3.9.5
essentialplugin · WP News and Scrolling Widgets
- affected 5.0.6
References
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-2026-23384 (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-2026-6443)Record last updated .