CVE-2026-40471
CSRF in hackage-server enables forged requests to admin actions.
Is CVE-2026-40471 being exploited?
Not confirmed. CVE-2026-40471 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 0.14% probability of exploitation in the next 30 days.
How severe is CVE-2026-40471?
CVE-2026-40471 is rated Critical with a CVSS score of 9.6. 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-2026-40471?
Not known from our data. No patch reference has been recorded for CVE-2026-40471, 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-2026-40471 affect?
CVE-2026-40471 affects Hackage Server. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-40471?
Enable CSRF tokens and origin validation; restrict unauthenticated actions.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
CSRF allows forged requests to upload packages, create users, or perform admin actions; some actions can be triggered without authentication.
Immediate action required