Search for packages
| purl | pkg:npm/%40ckeditor/ckeditor5-engine@10.0.0 |
| Vulnerability | Summary | Fixed by |
|---|---|---|
|
VCID-y831-gekf-cqh6
Aliases: CVE-2021-21391 GHSA-3rh3-wfr4-76mj |
Regular expression Denial of Service in multiple packages ### Impact A regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version <= 26.0.0. ### Patches The problem has been recognized and patched. The fix will be available in version 27.0.0. ### For more information Email us at security@cksource.com if you have any questions or comments about this advisory. ### Acknowledgements The CKEditor 5 team would like to thank Yeting Li for recognizing and reporting these vulnerabilities. |
Affected by 0 other vulnerabilities. |
| Vulnerability | Summary | Aliases |
|---|---|---|
| This package is not known to fix vulnerabilities. | ||
| Date | Actor | Action | Vulnerability | Source | VulnerableCode Version |
|---|---|---|---|---|---|
| 2026-04-16T21:21:54.072687+00:00 | GitLab Importer | Affected by | VCID-y831-gekf-cqh6 | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/@ckeditor/ckeditor5-engine/CVE-2021-21391.yml | 38.4.0 |
| 2026-04-11T22:34:24.820563+00:00 | GitLab Importer | Affected by | VCID-y831-gekf-cqh6 | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/@ckeditor/ckeditor5-engine/CVE-2021-21391.yml | 38.3.0 |
| 2026-04-02T22:45:30.384346+00:00 | GitLab Importer | Affected by | VCID-y831-gekf-cqh6 | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/@ckeditor/ckeditor5-engine/CVE-2021-21391.yml | 38.1.0 |
| 2026-04-01T17:03:28.060993+00:00 | GitLab Importer | Affected by | VCID-y831-gekf-cqh6 | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/@ckeditor/ckeditor5-engine/CVE-2021-21391.yml | 38.0.0 |