Highcharts Core: `javascript:` URL in an `xlink:href` attribute survives text filtering and reaches exported charts
Exact source revision recorded 29 Oct 2026 19:28:49 UTC. It does not establish the source's current position. Latest evidence.
cve-program · CVE-2026-116796
PublishedHighcharts JS is a JavaScript charting library based on SVG. From 10.3.2 until 11.4.9, 12.6.2, and 13.1.1, Highcharts accepts an SVG anchor xlink:href attribute without applying the allowed-scheme check used for href and src. An attacker who controls a chart text option can preserve a javascript URL in serialized chart output. When exported or server-rendered SVG is parsed again and a user activates the link, script runs in the origin of that document. This issue is fixed in 11.4.9, 12.6.2 and 13.1.1.
- Source published
- 28 Oct 2026 17:23:02 UTC
- Source modified
- 29 Oct 2026 18:34:59 UTC
- Observed here
- 29 Oct 2026 19:28:49 UTC
- Source terms
- CVE Program Terms of Use
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CVSS 4.0 · 7.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N