CVE Explorer

CVE-2026-28343

CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. Starting in version 29.0.0 and prior to version 47.6.0, a cross-site scripting (XSS) vulnerability has been discovered in the General HTML Support feature. This vulnerability could be triggered by inserting specially crafted markup, leading to unauthorized JavaScript code execution, if the editor instance used an unsafe General HTML Support configuration. This issue has been patched in version 47.6.0.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2ada87de79a045bd7b90d197e4c2f35992e1270913b4f94a62160070819e48d2

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"ckeditor5","vendor":"ckeditor","versions":[{"status":"affected","version":">= 29.0.0, < 47.6.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:90c5619b2c1da25033291df9fdd0d532bd6e794dc3ba243b76062fa162aee40a · sha256:918ef577c5a82a68… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:90c5619b2c1da25033291df9fdd0d532bd6e794dc3ba243b76062fa162aee40a · sha256:918ef577c5a82a68… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:90c5619b2c1da25033291df9fdd0d532bd6e794dc3ba243b76062fa162aee40a · sha256:918ef577c5a82a68… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/ckeditor/ckeditor5/releases/tag/v29.0.0","tags":["x_refsource_MISC"],"url":"https://github.com/ckeditor/ckeditor5/releases/tag/v29.0.0"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:90c5619b2c1da25033291df9fdd0d532bd6e794dc3ba243b76062fa162aee40a · sha256:918ef577c5a82a68… · /containers/cna/references/1

{"name":"https://github.com/ckeditor/ckeditor5/releases/tag/v47.6.0","tags":["x_refsource_MISC"],"url":"https://github.com/ckeditor/ckeditor5/releases/tag/v47.6.0"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:90c5619b2c1da25033291df9fdd0d532bd6e794dc3ba243b76062fa162aee40a · sha256:918ef577c5a82a68… · /containers/cna/references/2

{"name":"https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-jrqm-vmqc-gm93","tags":["x_refsource_CONFIRM"],"url":"https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-jrqm-vmqc-gm93"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:90c5619b2c1da25033291df9fdd0d532bd6e794dc3ba243b76062fa162aee40a · sha256:918ef577c5a82a68… · /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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