CVE-2026-45272
Admin-supplied setting allows Python injection and remote code execution.
Is CVE-2026-45272 being exploited?
Not confirmed. CVE-2026-45272 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-2026-45272?
CVE-2026-45272 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-2026-45272?
Yes. A fix has been recorded for CVE-2026-45272. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-45272 affect?
CVE-2026-45272 affects MyBooks (Talebook) <= 3.41.2, webserver/handlers/admin.py, webserver/loader.py, generated auto.py module. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-45272?
Upgrade to MyBooks 3.42.0 immediately; restrict admin access and rotate credentials.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated admin can inject/execute arbitrary Python as the app service account, enabling command execution, data disclosure, file modification, persistence, or service disruption.
Immediate action required
- affected< 3.42.0
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.