How severe is CVE-2024-21908?

CVE-2024-21908 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-21908 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21908?

CVE-2024-21908 affects Tiny Tinymce. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-21908?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-21908 have an EU (EUVD) identifier?

Yes. CVE-2024-21908 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-2161.

When was CVE-2024-21908 published?

CVE-2024-21908 was published on 2024-01-03 and last updated on 2026-06-17.

CVE-2024-21908

CVE-2024-21908 is a medium-severity vulnerability in Tiny Tinymce with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2021-2161
Weakness: CWE-79
Affected product: Tiny Tinymce
Published: 2024-01-03
Last modified: 2026-06-17

Description

TinyMCE versions before 5.9.0 are affected by a stored cross-site scripting vulnerability. An unauthenticated and remote attacker could insert crafted HTML into the editor resulting in arbitrary JavaScript execution in another user's browser.

Frequently asked questions

What is CVE-2024-21908?: TinyMCE versions before 5.9.0 are affected by a stored cross-site scripting vulnerability. An unauthenticated and remote attacker could insert crafted HTML into the editor resulting in arbitrary JavaScript execution in another user's browser.
How severe is CVE-2024-21908?: CVE-2024-21908 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-21908 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21908?: CVE-2024-21908 affects Tiny Tinymce. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-21908?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-21908 have an EU (EUVD) identifier?: Yes. CVE-2024-21908 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-2161.
When was CVE-2024-21908 published?: CVE-2024-21908 was published on 2024-01-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:tiny:tinymce:*:*:*:*:*:*:*:*

More vulnerabilities in Tiny Tinymce

CVE-2026-47762 — High (CVSS 8.7): TinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a stored XSS vulnerability via…
CVE-2026-47761 — High (CVSS 8.7): TinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a stored XSS vulnerability in…
CVE-2026-47760 — High (CVSS 8.7): TinyMCE is an open source rich text editor. From 6.8.0 to before 7.1.0, TinyMCE contains an XSS vulnerability caused by…
CVE-2026-47759 — High (CVSS 8.7): TinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a stored XSS vulnerability via…
CVE-2024-21911 — Medium (CVSS 6.1): TinyMCE versions before 5.6.0 are affected by a stored cross-site scripting vulnerability. An unauthenticated and…
CVE-2024-21910 — Medium (CVSS 6.1): TinyMCE versions before 5.10.0 are affected by a cross-site scripting vulnerability. A remote and unauthenticated…

All CVEs affecting Tiny Tinymce →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →