CVE-2026-82642
RCE via malicious EPUB iframe srcdoc allowing Tauri IPC access.
Is CVE-2026-82642 being exploited?
Not confirmed. CVE-2026-82642 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 0.38% probability of exploitation in the next 30 days.
How severe is CVE-2026-82642?
CVE-2026-82642 is rated High with a CVSS score of 8.8. 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-2026-82642?
Yes. A fix has been recorded for CVE-2026-82642. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-82642 affect?
CVE-2026-82642 affects Readest < 0.11.16 (Tauri-based e-book reader). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-82642?
Upgrade Readest to v0.11.16; block/scan untrusted EPUBs; restrict Tauri IPC permissions.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution: a crafted EPUB can deliver an iframe srcdoc script that shares origin and invokes Tauri IPC to run arbitrary code.
Immediate action required
- affected< 0.11.16
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.