CVE Catalog

CVE-2026-82642

HighCVSS 8.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.38%

31th percentile - higher than 31% of all known CVEs

Summary

Readest is an open-source e-book reader built on Tauri. In versions prior to 0.11.16, EPUB chapter HTML is sanitized with DOMPurify using a configuration that forbade only the <script> tag. DOMPurify does not parse the contents of the srcdoc attribute on <iframe> elements, so an attacker can embed a complete HTML document containing a <script> tag inside srcdoc and have it execute. The script can access Tauri IPC commands, escalating to arbitrary code execution.

Risk Assessment

Risk of arbitrary code execution in the application context, potentially leading to system compromise and data theft.

Recommendation

Update Readest to version 0.11.16 or later, which includes a hardened sanitizer configuration (added 'iframe', 'object', 'embed' to FORBID_TAGS and 'srcdoc' to FORBID_ATTR).

Related vulnerabilities

Original NVD description (English source)

Readest is an open-source e-book reader built on Tauri. In versions prior to 0.11.16, EPUB chapter HTML is sanitized with DOMPurify using a configuration that forbade only the <script> tag (FORBID_TAGS: ['script']) in apps/readest-app/src/services/transformers/sanitizer.ts. DOMPurify does not parse the contents of the srcdoc attribute on <iframe> elements, treating it as an opaque string attribute, so an attacker who can get an <iframe> element to survive sanitization can embed a complete HTML document containing a <script> tag inside srcdoc and have it execute when the browser renders the iframe. The content iframe is configured with sandbox="allow-same-origin allow-scripts", so script executing inside it shares the parent origin and can reach parent.parent.__TAURI_INTERNALS__.invoke(...), giving access to every Tauri IPC command the application is permitted to use, which escalates to arbitrary code execution. The payload can be made invisible (zero-size, transparent iframe) so the reader sees only normal book text. Version 0.11.16 hardened the sanitizer configuration by adding 'iframe', 'object' and 'embed' to FORBID_TAGS and adding 'srcdoc' to FORBID_ATTR.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS