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CVE-2026-34424

Smart Slider 3 Pro version 3.5.1.35 for WordPress and Joomla contains a multi-stage remote access toolkit injected through a compromised update system that allows unauthenticated attackers to execute arbitrary code and commands. Attackers can trigger pre-authentication remote shell execution via HTTP headers, establish authenticated backdoors accepting arbitrary PHP code or OS commands, create hidden administrator accounts, exfiltrate credentials and access keys, and maintain persistence through
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0d414b06ea09dda52b516b224eb520c1031539d02e2882c9b54a2d556584fc8a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Smart Slider 3 Pro for WordPress","vendor":"Nextendweb","versions":[{"status":"affected","version":"3.5.1.35","versionType":"custom"},{"lessThanOrEqual":"3.5.1.34","status":"unaffected","version":"0","versionType":"custom"},{"status":"unaffected","version":"3.5.1.36","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:140b83884642d85a368aee64f0c6007b1dc7eefe53aada27c4d63bff1c83cbb9 · sha256:35123f3549fb946f… · /containers/cna/affected/0

{"defaultStatus":"unaffected","product":"Smart Slider 3 Pro for Joomla","vendor":"Nextendweb","versions":[{"status":"affected","version":"3.5.1.35","versionType":"custom"},{"lessThanOrEqual":"3.5.1.34","status":"unaffected","version":"0","versionType":"custom"},{"status":"unaffected","version":"3.5.1.36","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:140b83884642d85a368aee64f0c6007b1dc7eefe53aada27c4d63bff1c83cbb9 · sha256:35123f3549fb946f… · /containers/cna/affected/1
cvss · 2 assertions

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpac…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:140b83884642d85a368aee64f0c6007b1dc7eefe53aada27c4d63bff1c83cbb9 · sha256:35123f3549fb946f… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:140b83884642d85a368aee64f0c6007b1dc7eefe53aada27c4d63bff1c83cbb9 · sha256:35123f3549fb946f… · /containers/cna/metrics/1/cvssV3_1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Smart Slider 3 Pro for WordPress","vendor":"Nextendweb","versions":[{"status":"affected","version":"3.5.1.35","versionType":"custom"},{"lessThanOrEqual":"3.5.1.34","status":"unaffected","version":"0","versionType":"custom"},{"status":"unaffected","version":"3.5.1.36","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:140b83884642d85a368aee64f0c6007b1dc7eefe53aada27c4d63bff1c83cbb9 · sha256:35123f3549fb946f… · /containers/cna/affected/0
{"defaultStatus":"unaffected","product":"Smart Slider 3 Pro for Joomla","vendor":"Nextendweb","versions":[{"status":"affected","version":"3.5.1.35","versionType":"custom"},{"lessThanOrEqual":"3.5.1.34","status":"unaffected","version":"0","versionType":"custom"},{"status":"unaffected","version":"3.5.1.36","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:140b83884642d85a368aee64f0c6007b1dc7eefe53aada27c4d63bff1c83cbb9 · sha256:35123f3549fb946f… · /containers/cna/affected/1

Provider-owned CVSS observations

2 source assertions
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpac…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:140b83884642d85a368aee64f0c6007b1dc7eefe53aada27c4d63bff1c83cbb9 · sha256:35123f3549fb946f… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:140b83884642d85a368aee64f0c6007b1dc7eefe53aada27c4d63bff1c83cbb9 · sha256:35123f3549fb946f… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-506","description":"Embedded Malicious Code","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:140b83884642d85a368aee64f0c6007b1dc7eefe53aada27c4d63bff1c83cbb9 · sha256:35123f3549fb946f… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["technical-description"],"url":"https://mysites.guru/blog/smart-slider-3-pro-supply-chain-compromise/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:140b83884642d85a368aee64f0c6007b1dc7eefe53aada27c4d63bff1c83cbb9 · sha256:35123f3549fb946f… · /containers/cna/references/4
{"tags":["technical-description"],"url":"https://patchstack.com/articles/critical-supply-chain-compromise-in-smart-slider-3-pro-full-malware-analysis/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:140b83884642d85a368aee64f0c6007b1dc7eefe53aada27c4d63bff1c83cbb9 · sha256:35123f3549fb946f… · /containers/cna/references/3
{"tags":["third-party-advisory"],"url":"https://patchstack.com/database/wordpress/plugin/nextend-smart-slider3-pro/vulnerability/wordpress-smart-slider-3-plugin-3-5-1-35-backdoor-vulnerability"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:140b83884642d85a368aee64f0c6007b1dc7eefe53aada27c4d63bff1c83cbb9 · sha256:35123f3549fb946f… · /containers/cna/references/2
{"tags":["vendor-advisory","patch"],"url":"https://smartslider.helpscoutdocs.com/article/2143-joomla-security-advisory-smart-slider-3-pro-3-5-1-35-compromise"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:140b83884642d85a368aee64f0c6007b1dc7eefe53aada27c4d63bff1c83cbb9 · sha256:35123f3549fb946f… · /containers/cna/references/1
{"tags":["vendor-advisory","patch"],"url":"https://smartslider.helpscoutdocs.com/article/2144-wordpress-security-advisory-smart-slider-3-pro-3-5-1-35-compromise"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:140b83884642d85a368aee64f0c6007b1dc7eefe53aada27c4d63bff1c83cbb9 · sha256:35123f3549fb946f… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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