{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-82642", "assignerOrgId": "48a46f29-ae42-4e1d-90dd-c1676c1e5e6d", "state": "PUBLISHED", "assignerShortName": "JFROG", "dateReserved": "2026-08-30T13:32:39.506Z", "datePublished": "2026-08-30T13:44:34.109Z", "dateUpdated": "2026-08-30T13:44:34.109Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "48a46f29-ae42-4e1d-90dd-c1676c1e5e6d", "shortName": "JFROG", "dateUpdated": "2026-08-30T13:44:34.109Z"}, "title": "Readest: unsanitized iframe srcdoc attribute in the EPUB sanitizer can lead to arbitrary code execution", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-79", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "affected": [{"vendor": "readest", "product": "readest", "platforms": ["Windows", "macOS", "Linux"], "collectionURL": "https://github.com/readest/readest", "repo": "https://github.com/readest/readest", "versions": [{"status": "affected", "version": "0", "lessThan": "0.11.16", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>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 &lt;script&gt; tag (FORBID_TAGS: ['script']) in apps/readest-app/src/services/transformers/sanitizer.ts. DOMPurify does not parse the contents of the srcdoc attribute on &lt;iframe&gt; elements, treating it as an opaque string attribute, so an attacker who can get an &lt;iframe&gt; element to survive sanitization can embed a complete HTML document containing a &lt;script&gt; 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.</p>"}]}], "references": [{"url": "https://github.com/readest/readest/security/advisories/GHSA-p4x7-pf2c-xrvj", "name": "GHSA-p4x7-pf2c-xrvj", "tags": ["vendor-advisory"]}, {"url": "https://github.com/readest/readest/pull/4762", "name": "PR #4762", "tags": ["patch"]}, {"url": "https://github.com/readest/readest/commit/005aa2d6157a34049bf45641c06861d606a85edb", "name": "Fix commit 005aa2d6157a", "tags": ["patch"]}, {"url": "https://github.com/readest/readest/releases/tag/v0.11.16", "name": "Release v0.11.16 (first fixed release)", "tags": ["release-notes"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}}], "workarounds": [{"lang": "en", "value": "Only open EPUB files from trusted sources. Ensure the 'allow script' view setting remains disabled, as enabling it bypasses sanitization entirely.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Only open EPUB files from trusted sources. Ensure the 'allow script' view setting remains disabled, as enabling it bypasses sanitization entirely.</p>"}]}], "solutions": [{"lang": "en", "value": "Upgrade to Readest 0.11.16 or later. The fix adds 'srcdoc' to the DOMPurify FORBID_ATTR list and 'iframe', 'object' and 'embed' to FORBID_TAGS in apps/readest-app/src/services/transformers/sanitizer.ts.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Upgrade to Readest 0.11.16 or later. The fix adds 'srcdoc' to the DOMPurify FORBID_ATTR list and 'iframe', 'object' and 'embed' to FORBID_TAGS in apps/readest-app/src/services/transformers/sanitizer.ts.</p>"}]}], "timeline": [{"time": "2026-06-23T00:00:00.000Z", "lang": "en", "value": "Reported to the Readest maintainers"}, {"time": "2026-06-24T14:01:00.000Z", "lang": "en", "value": "Fix committed (005aa2d6157a, PR #4762)"}, {"time": "2026-06-28T18:51:00.000Z", "lang": "en", "value": "Fix released in v0.11.16"}], "credits": [{"lang": "en", "value": "Yuval Moravchick, JFrog Security Research", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://github.com/readest/readest", "defaultStatus": "unaffected", "platforms": ["Windows", "macOS", "Linux"], "product": "readest", "repo": "https://github.com/readest/readest", "vendor": "readest", "versions": [{"lessThan": "0.11.16", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "reefs@jfrog.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-82642", "lastModified": "2026-08-30T14:17:04.193", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "reefs@jfrog.com", "type": "Secondary"}]}, "published": "2026-08-30T14:17:04.193", "references": [{"source": "reefs@jfrog.com", "url": "https://github.com/readest/readest/commit/005aa2d6157a34049bf45641c06861d606a85edb"}, {"source": "reefs@jfrog.com", "url": "https://github.com/readest/readest/pull/4762"}, {"source": "reefs@jfrog.com", "url": "https://github.com/readest/readest/releases/tag/v0.11.16"}, {"source": "reefs@jfrog.com", "url": "https://github.com/readest/readest/security/advisories/GHSA-p4x7-pf2c-xrvj"}], "sourceIdentifier": "reefs@jfrog.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "reefs@jfrog.com", "type": "Primary"}]}

{}

{}