Vulnerability · CVE-2026-116796
Highcharts Core: URL in an attribute survives text filtering and reaches exported charts
Published Oct 28, 2026 · Highcharts Core: URL in
Last checked Nov 4, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2026-116796. EPSS is 0.34%. Act only if a listed version of Highcharts Core: URL in is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (Highcharts Core: URL in).
- No version range is stored. A customer cannot check an installed version against this record.
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Unknown—
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.34%
- Remediation
- Not established
- Affected products
- npm highcharts
The filter applied to markup in text options checks href, src and a few similar attributes against an allowed-scheme list, but accepts xlink:href without that check, so an SVG anchor whose xlink:href is a javascript: URL passes the filter, whether or not the option is rendered with useHTML. In the live page the attribute is written without the XLink namespace, so browsers do not treat the anchor as a link …
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- npm highchartsversion unspecified
How to fix CVE-2026-116796
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
No version range is stored, so an installed version cannot be checked on this page.
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-116796. EPSS is 0.34%. Act only if a listed version of Highcharts Core: URL in is installed.
Which versions are affected?
Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.34%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Oct 28, 2026 · GitLab Advisory Database
Detected
The filter applied to markup in text options checks href, src and a few similar attributes against an allowed-scheme list, but accepts xlink:href without that check, so an SVG anchor whose xlink:href is a javascript: URL passes the filter, whether or not the option is rendered with useHTML. In the live page the attribute is written without the XLink namespace, so browsers do not treat the anchor a
Sources
- CVE.orgVulnerability recordCVE-2026-116796
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-116796
30-day exploitation probability 0.34%
first.org - GitLab Advisory DatabasePackage advisoryCVE-2026-116796
The filter applied to markup in text options checks href, src and a few similar attributes against an allowed-scheme list, but accepts xlink:href without that check, so an SVG anchor whose xlink:href is a javascript: URL passes the filter, whether or not the option is rendered with useHTML. In the live page the attribute is written without the XLink namespace, so browsers do not treat the anchor a
advisories.gitlab.com
Freshness
Last verified in this catalog Nov 4, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSNov 4, 2026
- GitLab Advisory DatabaseOct 30, 2026
- CVE.orgOct 29, 2026