npm/showdown CVE-2026-59710: medium 6.1, EPSS 0.34%
showdown allows stored cross-site scripting through table header ID injection
Action: No fix published. Pin and monitor.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | - | 2.1.0 |
Fixed versions
No fixed version in the source.
Sources
- osv: GHSA-22g5-r2x5-97cx
- https://nvd.nist.gov/vuln/detail/CVE-2026-59710
- https://github.com/showdownjs/showdown/issues/1046
- https://github.com/showdownjs/showdown/commit/e5cab1e9a5dcea2bb3cbf888863fa7e65ab37edf
- https://github.com/showdownjs/showdown
- https://www.vulncheck.com/advisories/showdown-stored-xss-via-unescaped-table-header-id-attribute-injection
CVE-2026-59710 · published · modified · JSON