CVE-2026-36458
SQLi in ChestnutCMS v1.5.10 via admin cms_content tag
Is CVE-2026-36458 being exploited?
Not confirmed. CVE-2026-36458 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 0.37% probability of exploitation in the next 30 days.
How severe is CVE-2026-36458?
CVE-2026-36458 is rated Critical. 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-2026-36458?
Not known from our data. No patch reference has been recorded for CVE-2026-36458, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-36458 affect?
CVE-2026-36458 affects ChestnutCMS v1.5.10. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-36458?
Patch/upgrade to fixed ChestnutCMS version when available
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
SQL injection via admin content parameter enables arbitrary SQL execution, data theft, and potential DB compromise.
Immediate action required