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01 Record

CVE-2026-6443

Essentialplugin Plugins (Various Versions) - Injected Backdoor

CriticalPUBLISHEDCNA: Wordfence
CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

02 Description

Essentialplugin Plugins (Various Versions) - Injected Backdoor

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.49% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 42.1% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Deferred. NVD last modified this record on 2026-10-26.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-04-17 06:44Z6 MO AGO
Last updated
2026-04-21 19:53Z6 MO AGO
Reserved
2026-04-16
Assigning CNA
Wordfence
Record state
PUBLISHED
Severity
Critical (CVSS 9.8)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-506Embedded Malicious CodeClass
Data version
5.2
Document digest
bb417142e63a20d40f2bbb7778cfabb2f9eb56385dcf3d0ba074029f19fb8fc8

05 Affected products

VendorProductVersionsPlatforms
essentialpluginAccordion and Accordion Slider1.4.6—
essentialpluginPortfolio and Projects1.5.6—
essentialpluginFeatured Post Creative1.5.7—
essentialpluginPost grid and filter ultimate1.7.4—
essentialpluginWP Featured Content and Slider1.7.6—
essentialpluginPost Ticker Ultimate1.7.6—
essentialpluginTimeline and History slider2.4.5—
essentialpluginWP Blog and Widgets2.6.6—
essentialpluginCountdown Timer Ultimate2.6.9—
essentialpluginBlog Designer – Post and Widget2.7.7—
essentialpluginVideo gallery and Player2.8.7—
essentialpluginWP Slick Slider and Image Carousel3.7.8.1—
essentialpluginWP News and Scrolling Widgets5.0.6—

06 References