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Vulnerability details: VCID-4bt5-crm3-7ufy
Vulnerability ID VCID-4bt5-crm3-7ufy
Aliases CVE-2023-48219
GHSA-v626-r774-j7f8
Summary TinyMCE is an open source rich text editor. A mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo/redo functionality and other APIs and plugins. Text nodes within specific parents are not escaped upon serialization according to the HTML standard. If such text nodes contain a special character reserved as an internal marker, they can be combined with other HTML patterns to form malicious snippets. These snippets pass the initial sanitisation layer when the content is parsed into the editor body, but can trigger XSS when the special internal marker is removed from the content and re-parsed. his vulnerability has been patched in TinyMCE versions 6.7.3 and 5.10.9. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.02076 https://api.first.org/data/v1/epss?cve=CVE-2023-48219
epss 0.02076 https://api.first.org/data/v1/epss?cve=CVE-2023-48219
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-v626-r774-j7f8
cvssv3.1 6.1 https://github.com/tinymce/tinymce
generic_textual MODERATE https://github.com/tinymce/tinymce
cvssv3.1 6.1 https://github.com/tinymce/tinymce/releases/tag/5.10.9
generic_textual MODERATE https://github.com/tinymce/tinymce/releases/tag/5.10.9
cvssv3.1 6.1 https://github.com/tinymce/tinymce/releases/tag/6.7.3
generic_textual MODERATE https://github.com/tinymce/tinymce/releases/tag/6.7.3
cvssv3.1 6.1 https://github.com/tinymce/tinymce/security/advisories/GHSA-v626-r774-j7f8
cvssv3.1_qr MODERATE https://github.com/tinymce/tinymce/security/advisories/GHSA-v626-r774-j7f8
generic_textual MODERATE https://github.com/tinymce/tinymce/security/advisories/GHSA-v626-r774-j7f8
ssvc Track https://github.com/tinymce/tinymce/security/advisories/GHSA-v626-r774-j7f8
cvssv3.1 6.1 https://nvd.nist.gov/vuln/detail/CVE-2023-48219
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2023-48219
cvssv3.1 6.1 https://tiny.cloud/docs/release-notes/release-notes5109
generic_textual MODERATE https://tiny.cloud/docs/release-notes/release-notes5109
cvssv3.1 6.1 https://tiny.cloud/docs/release-notes/release-notes5109/
ssvc Track https://tiny.cloud/docs/release-notes/release-notes5109/
cvssv3.1 6.1 https://tiny.cloud/docs/tinymce/6/6.7.3-release-notes
generic_textual MODERATE https://tiny.cloud/docs/tinymce/6/6.7.3-release-notes
cvssv3.1 6.1 https://tiny.cloud/docs/tinymce/6/6.7.3-release-notes/
ssvc Track https://tiny.cloud/docs/tinymce/6/6.7.3-release-notes/
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2023-48219
https://github.com/tinymce/tinymce
https://github.com/tinymce/tinymce/releases/tag/5.10.9
https://github.com/tinymce/tinymce/releases/tag/6.7.3
https://nvd.nist.gov/vuln/detail/CVE-2023-48219
https://tiny.cloud/docs/release-notes/release-notes5109
https://tiny.cloud/docs/tinymce/6/6.7.3-release-notes
6.7.3-release-notes https://tiny.cloud/docs/tinymce/6/6.7.3-release-notes/
GHSA-v626-r774-j7f8 https://github.com/advisories/GHSA-v626-r774-j7f8
GHSA-v626-r774-j7f8 https://github.com/tinymce/tinymce/security/advisories/GHSA-v626-r774-j7f8
release-notes5109 https://tiny.cloud/docs/release-notes/release-notes5109/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/tinymce/tinymce
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/tinymce/tinymce/releases/tag/5.10.9
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/tinymce/tinymce/releases/tag/6.7.3
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

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none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/tinymce/tinymce/security/advisories/GHSA-v626-r774-j7f8
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-08-29T17:41:49Z/ Found at https://github.com/tinymce/tinymce/security/advisories/GHSA-v626-r774-j7f8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-48219
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://tiny.cloud/docs/release-notes/release-notes5109
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://tiny.cloud/docs/release-notes/release-notes5109/
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-08-29T17:41:49Z/ Found at https://tiny.cloud/docs/release-notes/release-notes5109/
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://tiny.cloud/docs/tinymce/6/6.7.3-release-notes
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://tiny.cloud/docs/tinymce/6/6.7.3-release-notes/
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-08-29T17:41:49Z/ Found at https://tiny.cloud/docs/tinymce/6/6.7.3-release-notes/
Exploit Prediction Scoring System (EPSS)
Percentile 0.84332
EPSS Score 0.02076
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T17:27:55.532661+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2023/48xxx/CVE-2023-48219.json 38.6.0