CVE-2026-30863
Critical JWT audience-check bypass in Parse Server adapters
Is CVE-2026-30863 being exploited?
Not confirmed. CVE-2026-30863 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 0.53% probability of exploitation in the next 30 days.
How severe is CVE-2026-30863?
CVE-2026-30863 is rated Critical with a CVSS score of 9.3. 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-2026-30863?
Yes. A fix has been recorded for CVE-2026-30863. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-30863 affect?
CVE-2026-30863 affects Parse Server (pre-8.6.10/pre-9.5.0-alpha.11), Google/Apple/Facebook authentication adapters (pre-patch). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-30863?
Upgrade to 8.6.10 or 9.5.0-alpha.11+
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
JWT audience-check bypass in Google/Apple/Facebook adapters enables impersonation of any user on Parse Server
Patch when possible
- affected< 8.6.10
- affected< 9.5.0-alpha.11
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.