Affects widely used Splunk Enterprise; unauthenticated access can expose/alter sensitive log/search data — high-impact for many organizations.
CVE-2026-76312
Unauthenticated exposure of session material via embedded Splunk reports
Is CVE-2026-76312 being exploited?
Not confirmed. CVE-2026-76312 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 0.36% probability of exploitation in the next 30 days.
How severe is CVE-2026-76312?
CVE-2026-76312 is rated Critical with a CVSS score of 9.4. 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-2026-76312?
Yes. A fix has been recorded for CVE-2026-76312. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-76312 affect?
CVE-2026-76312 affects Splunk Enterprise < 10.4.1, Splunk Enterprise < 10.2.6, Splunk Enterprise < 10.0.9, Splunk Enterprise < 9.4.14. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-76312?
Update Splunk to fixed versions and restrict/remove public embedded-report HTML exposure
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attacker can extract session material from embedded-report HTML to access archived search-job data, exfiltrate data and affect integrity.
Immediate action required
- affected>= 10.4 and < 10.4.1
- affected>= 10.2 and < 10.2.6
- affected>= 10.0 and < 10.0.9
- affected>= 9.4 and < 9.4.14
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.