CVE-2026-56258
Arbitrary file write via TOCTOU in Crawl4AI endpoints.
Is CVE-2026-56258 being exploited?
Not confirmed. CVE-2026-56258 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 0.91% probability of exploitation in the next 30 days.
How severe is CVE-2026-56258?
CVE-2026-56258 is rated Critical with a CVSS score of 9.2. 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-2026-56258?
Yes. A fix has been recorded for CVE-2026-56258. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-56258 affect?
CVE-2026-56258 affects Crawl4AI < 0.8.8. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-56258?
Patch to 0.8.8+; enforce strict output_path validation; restrict writable dirs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated arbitrary file write via symlink/TOCTOU; may lead to code execution if target dirs are writable.
Immediate action required
- affected< 0.8.8
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.