# CVE-2026-118254: Highcharts Grid: pagination language options are parsed as HTML

Status: published. Published: 2026-10-28. Updated: 2026-11-03.

Highcharts JS is a JavaScript charting library based on SVG. From 2.0.0 until 3.2.0, Highcharts Grid writes pagination language strings into the DOM as markup instead of text. An attacker who controls the Grid language configuration can provide elements with event handlers, which execute in the hosting page origin when pagination controls render. Exploitation requires pagination to be enabled but does not require additional user interaction. This issue is fixed in 3.2.0.

## Remediation

- fix: @highcharts/grid-lite (npm): OSV reports a fixed version 3.2.0. Check the advisory for supported release branches. (source: OSV GHSA-r5wg-q8fc-p6w2) — https://github.com/advisories/GHSA-r5wg-q8fc-p6w2
- fix: @highcharts/grid-pro (npm): OSV reports a fixed version 3.2.0. Check the advisory for supported release branches. (source: OSV GHSA-r5wg-q8fc-p6w2) — https://github.com/advisories/GHSA-r5wg-q8fc-p6w2

## Affected products and versions

- highcharts / highcharts: < 13.0.0-beta.2 (affected). Source: CNA: GitHub_M
- @highcharts / grid-lite: >= 2.0.0, < 3.2.0 (affected). Source: CNA: GitHub_M
- @highcharts / grid-pro: >= 2.0.0, < 3.2.0 (affected). Source: CNA: GitHub_M
-  / @highcharts/grid-lite (@highcharts/grid-lite): ≥ 2.0.0; < 3.2.0 (affected, semver); OSV events: introduced 2.0.0; fixed 3.2.0. Source: OSV GHSA-r5wg-q8fc-p6w2
-  / @highcharts/grid-pro (@highcharts/grid-pro): ≥ 2.0.0; < 3.2.0 (affected, semver); OSV events: introduced 2.0.0; fixed 3.2.0. Source: OSV GHSA-r5wg-q8fc-p6w2

## Severity and prioritization

- CVSS 4.0: 8.6 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: 0.42% as of 2026-11-03; percentile 36.26%

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-79

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/highcharts/highcharts/security/advisories/GHSA-r5wg-q8fc-p6w2 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/highcharts/highcharts/commit/1e8ded84d52191883965641b863cf0c73eb759aa (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/highcharts/highcharts/releases/tag/grid-v3.2.0 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/advisories/GHSA-r5wg-q8fc-p6w2 (OSV / GitHub Security Advisories; advisory)

- https://osv.dev/vulnerability/GHSA-r5wg-q8fc-p6w2 (OSV / GitHub Security Advisories; osv)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-118254; retrieved 2026-11-03; source updated 2026-11-03

- OSV / GitHub Security Advisories: https://osv.dev/vulnerability/GHSA-r5wg-q8fc-p6w2; retrieved 2026-11-03; source updated 2026-10-28

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-118254; retrieved 2026-11-03; source updated Not reported

Revision: 4cb77e94b5d8535046a2e6607b109aabd4c1566fe47ef8e3b4aa7e1e4aa6db81

Canonical: https://y2.dev/cve/CVE-2026-118254

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.