# FEDORA-2026-3942AB86FD: Security update for 4 packages FEDORA-2026-3942AB86FD, released October 5, 2026, fixes 19 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/fix/linux/fedora-2026-3942ab86fd - Platform: Linux - Released: Oct 5, 2026 - Priority: High (Closes CVE-2026-13676, high severity) - CVEs: 19, exploited: 0, on CISA KEV: 0 - Vendor advisory: https://bodhi.fedoraproject.org/updates/FEDORA-2026-3942ab86fd ## Applies to | Product | Release | Fixed in | |---|---|---| | [python-jupytext](https://patchblox.com/security/data/product/linux/python-jupytext.md) | Fedora 43 | 1.19.6-1.fc43 | | [python-jupytext-doc](https://patchblox.com/security/data/product/linux/python-jupytext-doc.md) | Fedora 43 | 1.19.6-1.fc43 | | [python3-jupyterlab-jupytext](https://patchblox.com/security/data/product/linux/python3-jupyterlab-jupytext.md) | Fedora 43 | 1.19.6-1.fc43 | | [python3-jupytext](https://patchblox.com/security/data/product/linux/python3-jupytext.md) | Fedora 43 | 1.19.6-1.fc43 | ## CVEs this fix closes | CVE | Priority | Title | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2026-13676](https://patchblox.com/security/data/cve/CVE-2026-13676.md) | High | node-ajv: fast-uri versions 2.3.1 through 3.1.2 and 4.0.0 fail to canonicalize Unicode (IDN) hostnames for HTTP-family URLs | 7.5 | 0.0069 | | | [CVE-2026-12143](https://patchblox.com/security/data/cve/CVE-2026-12143.md) | High | form-data does not escape CR/LF/quote in multipart field names and filenames (CRLF injection) | 7.5 | 0.0067 | | | [CVE-2026-67213](https://patchblox.com/security/data/cve/CVE-2026-67213.md) | High | node-mocha: nanoid (Nano ID) before 5.1.6 contains an infinite loop in the customAlphabet and customRandom functions | 7.5 | 0.0033 | | | [CVE-2026-67214](https://patchblox.com/security/data/cve/CVE-2026-67214.md) | High | node-mocha: nanoid (Nano ID) before 3.3.16 and 5.1.16 contains an infinite loop in the customAlphabet and nanoid functions of its... | 7.5 | 0.0033 | | | [CVE-2026-73086](https://patchblox.com/security/data/cve/CVE-2026-73086.md) | High | node-mocha: nanoid is a secure, URL-friendly, unique string ID generator for JavaScript | 7.4 | 0.0030 | | | [CVE-2026-84292](https://patchblox.com/security/data/cve/CVE-2026-84292.md) | High | node-ajv: fast-uri serializes the port component of a URI without validating it | 7.5 | 0.0024 | | | [CVE-2026-75899](https://patchblox.com/security/data/cve/CVE-2026-75899.md) | High | node-ajv: fast-uri is a URI parser for Node.js | 7.5 | 0.0022 | | | [CVE-2026-44990](https://patchblox.com/security/data/cve/CVE-2026-44990.md) | Routine | golang-github-prometheus-prometheus: Fixed stored XSS in the new React UI by sanitizing disallowed xmp elements (bsc#1275205) | n/a | 0.0068 | | | [CVE-2026-73422](https://patchblox.com/security/data/cve/CVE-2026-73422.md) | Routine | python3-jupyterlab-jupytext: python-jupytext: Astro: Arbitrary code execution via unescaped View Transition animation properties | n/a | 0.0055 | | | [CVE-2026-71437](https://patchblox.com/security/data/cve/CVE-2026-71437.md) | Routine | python3-jupyterlab-jupytext: python-jupytext: Mermaid: Prototype pollution vulnerability allows potential arbitrary code execution | n/a | 0.0050 | | | [CVE-2026-69153](https://patchblox.com/security/data/cve/CVE-2026-69153.md) | Routine | node-postcss: PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstra... | 5.3 | 0.0045 | | | [CVE-2026-75838](https://patchblox.com/security/data/cve/CVE-2026-75838.md) | Routine | node-dompurify: DOMPurify before 3.4.13 contains a cross-site scripting vulnerability in IN_PLACE sanitization where element-removal... | n/a | 0.0039 | | | [CVE-2026-71438](https://patchblox.com/security/data/cve/CVE-2026-71438.md) | Routine | python3-jupyterlab-jupytext: python-jupytext: Mermaid: Prototype pollution vulnerability via configuration APIs | n/a | 0.0035 | | | [CVE-2026-65903](https://patchblox.com/security/data/cve/CVE-2026-65903.md) | Routine | node-dompurify: DOMPurify before 3.4.0 contains a logic error in the ADD_TAGS function where short-circuit evaluation allows forbidde... | n/a | 0.0033 | | | [CVE-2026-84371](https://patchblox.com/security/data/cve/CVE-2026-84371.md) | Routine | python3-jupyterlab-jupytext: python-jupytext: stored XSS via SVG SMIL URI-list scheme-policy bypass | n/a | 0.0030 | | | [CVE-2026-73423](https://patchblox.com/security/data/cve/CVE-2026-73423.md) | Routine | python3-jupyterlab-jupytext: python-jupytext: Astro: Cross-site Request Forgery (CSRF) due to origin check bypass in `astro/hono` pipeline | n/a | 0.0026 | | | [CVE-2026-86472](https://patchblox.com/security/data/cve/CVE-2026-86472.md) | Routine | node-ajv: fast-uri is a dependency-free RFC 3986 URI parser for Node.js, used by Fastify and ajv | 4.8 | 0.0025 | | | [CVE-2026-66010](https://patchblox.com/security/data/cve/CVE-2026-66010.md) | Routine | node-dompurify: DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOM_ELEMENT_HA... | n/a | 0.0022 | | | [CVE-2026-53606](https://patchblox.com/security/data/cve/CVE-2026-53606.md) | Routine | golang-github-prometheus-prometheus: Fixed incomplete URI scheme validation in sanitize-html that could enable XSS (bsc#1269966) | n/a | 0.0021 | | --- Data as of 2026-11-11T01:43:54Z UTC. 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