CVE-2026-15143
Remote SSRF/local file read via unsafe XSD processing in guardrails-detectors.
Is CVE-2026-15143 being exploited?
Not confirmed. CVE-2026-15143 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 0.43% probability of exploitation in the next 30 days.
How severe is CVE-2026-15143?
CVE-2026-15143 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-2026-15143?
Not known from our data. No patch reference has been recorded for CVE-2026-15143, 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-2026-15143 affect?
CVE-2026-15143 affects guardrails-detectors (file_type content detector), Applications using guardrails-detectors library. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-15143?
Apply vendor patch when released; block outbound requests; validate/sanitize XSD inputs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attacker-supplied XSD causes server-side requests or local file reads, exposing cloud creds, internal services, or sensitive files.
Immediate action required