tinymce is an open source rich text editor. A cross-site scripting (XSS) vulnerability was discovered in the alert and confirm dialogs when these dialogs were provided with malicious HTML content. This can occur in plugins that use the alert or confirm dialogs, such as in the image plugin, which presents these dialogs when certain errors occur. The vulnerability allowed arbitrary JavaScript execution when an alert presented in the TinyMCE UI for the current user. This vulnerability has been patched in TinyMCE 5.10.7 and TinyMCE 6.3.1 by ensuring HTML sanitization was still performed after unwrapping invalid elements. Users are advised to upgrade to either 5.10.7 or 6.3.1. Users unable to upgrade may ensure the the images_upload_handler returns a valid value as per the images_upload_handler documentation.
CVE-2022-23494
MEDIUMNVD 5.45.4—
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 5.4 under NVD CVSS v3. EPSS exploit probability: 1.8%, top 17% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, nvd
5.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 5.4Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.4
- EG Score
- 5.4(medium)
- EPSS
- 56.8%
- KEV
- Not listed
Published
December 8, 2022
Last Modified
November 21, 2024
References (12)
- security-advisories@githubhttps://github.com/tinymce/tinymce/commit/6923d85eba6de3e08ebc9c5a387b5abdaa21150e
- security-advisories@githubhttps://github.com/tinymce/tinymce/commit/8bb2d2646d4e1a718fce61a775fa22e9d317b32d
- security-advisories@githubhttps://github.com/tinymce/tinymce/security/advisories/GHSA-gg8r-xjwq-4w92
- security-advisories@githubhttps://www.tiny.cloud/docs/release-notes/release-notes5107/#securityfixes
- security-advisories@githubhttps://www.tiny.cloud/docs/tinymce/6/6.3-release-notes/#security-fixes
- security-advisories@githubhttps://www.tiny.cloud/docs/tinymce/6/file-image-upload/#images_upload_handler
- af854a3a-2127-422b-91ae-364da2661108https://github.com/tinymce/tinymce/commit/6923d85eba6de3e08ebc9c5a387b5abdaa21150e
- af854a3a-2127-422b-91ae-364da2661108https://github.com/tinymce/tinymce/commit/8bb2d2646d4e1a718fce61a775fa22e9d317b32d
- af854a3a-2127-422b-91ae-364da2661108https://github.com/tinymce/tinymce/security/advisories/GHSA-gg8r-xjwq-4w92
- af854a3a-2127-422b-91ae-364da2661108https://www.tiny.cloud/docs/release-notes/release-notes5107/#securityfixes
- af854a3a-2127-422b-91ae-364da2661108https://www.tiny.cloud/docs/tinymce/6/6.3-release-notes/#security-fixes
- af854a3a-2127-422b-91ae-364da2661108https://www.tiny.cloud/docs/tinymce/6/file-image-upload/#images_upload_handler
Affected Packages
(3 across 3 ecosystems)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| tinymce | — | 5.10.7 | — |
NuGet(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| TinyMCE | 3.4.3.2 ... 5.9.2 (179 versions) | 5.10.7 | — |
Packagist(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| tinymce/tinymce | 4.0.0 ... 5.9.2 (170 versions) | 5.10.7 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2022-23494?
CVE-2022-23494 is a medium vulnerability published on December 8, 2022. tinymce is an open source rich text editor. A cross-site scripting (XSS) vulnerability was discovered in the alert and confirm dialogs when these dialogs were provided with malicious HTML content. This can occur in plugins that use the alert or confirm dialogs, such as in the image plugin, which…
When was CVE-2022-23494 disclosed?
CVE-2022-23494 was first published in the National Vulnerability Database on December 8, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-23494 actively exploited?
CVE-2022-23494 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 56.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-23494?
CVE-2022-23494 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2022-23494?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-23494, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-23494
Is Your Infrastructure Affected by CVE-2022-23494?
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