CVE-2026-85061
Stored XSS in MapLibre GL JS allows arbitrary script execution via malicious attribution strings
Is CVE-2026-85061 being exploited?
Not confirmed. CVE-2026-85061 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.31% probability of exploitation in the next 30 days.
How severe is CVE-2026-85061?
CVE-2026-85061 is rated Critical with a CVSS score of 10.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-85061?
Yes. A fix has been recorded for CVE-2026-85061. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-85061 affect?
CVE-2026-85061 affects MapLibre GL JS < 6.4.1, Web applications embedding MapLibre GL JS with untrusted attributions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-85061?
Upgrade MapLibre GL JS to v6.4.1 and avoid rendering untrusted attribution HTML.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Stored XSS: attacker-supplied attribution can bypass sanitization and execute arbitrary JavaScript in victims' browsers when map renders.
Immediate action required
- affected< 6.4.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.