# OpenJS Foundation Undici vulnerabilities Source: https://junglewise.ai/threats/technologies/openjs-foundation-undici Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 12 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/openjs-foundation-undici.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 12 vulnerabilities in OpenJS Foundation Undici: 4 in the last 7 days and 12 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-120474, was published on 6 November 2026. 12 vulnerabilities in the last four weeks, up from none in the four before. ## Counts - Last 7 days: 4 - Last 30 days: 12 - Last 90 days: 12 - All time: 12 (0 critical, 0 exploited in the wild) ## Latest OpenJS Foundation Undici vulnerabilities - [CVE-2026-120474: undici cross-user cache disclosure via same-origin redirect](https://junglewise.ai/threats/cve-2026-120474-undici-is-an-http-client-for-node-js-in-versions-7-0-0-through-7) (medium, CVSS 6.5, published 6 Nov 2026) - [CVE-2026-120423: undici Subresource Integrity bypass via whitespace in integrity metadata](https://junglewise.ai/threats/cve-2026-120423-undici-is-an-http-client-for-node-js-in-versions-7-15-0-through) (medium, CVSS 5.9, published 6 Nov 2026) - [CVE-2026-120222: undici denial of service via unhandled exception in cache-interceptor](https://junglewise.ai/threats/cve-2026-120222-undici-is-an-http-client-for-node-js-in-versions-7-0-0-through-7) (medium, CVSS 5.9, published 6 Nov 2026) - [CVE-2026-116592: undici cache poisoning and cross-user disclosure via intermediate redirect](https://junglewise.ai/threats/cve-2026-116592-undici-is-an-http-client-for-node-js-in-versions-7-30-1-and-8-12) (high, CVSS 7.4, published 6 Nov 2026) - [CVE-2026-87029: undici HTTP client denial of service in decompress interceptor](https://junglewise.ai/threats/cve-2026-87029-undici-is-an-http-client-library-for-node-js-in-versions-7-15-0) (medium, CVSS 5.9, published 15 Oct 2026) - [CVE-2026-87018: undici denial of service via TLS 1.2 certificate renegotiation](https://junglewise.ai/threats/cve-2026-87018-undici-is-an-http-client-library-for-node-js-in-versions-4-2-1) (high, CVSS 7.5, published 15 Oct 2026) - [CVE-2026-109932: undici WebSocket client denial of service via unbounded PONG buffering](https://junglewise.ai/threats/cve-2026-109932-undici-is-an-http-client-library-for-node-js-in-versions-5-15-0) (medium, CVSS 5.9, published 15 Oct 2026) - [CVE-2026-109924: undici EventSource memory exhaustion denial of service](https://junglewise.ai/threats/cve-2026-109924-undici-is-an-http-client-library-for-node-js-in-versions-6-5-0) (medium, CVSS 5.9, published 15 Oct 2026) - [CVE-2026-109869: undici HTTP client denial of service via excessive content-encodings](https://junglewise.ai/threats/cve-2026-109869-undici-is-an-http-client-library-for-node-js-in-versions-6-23-0) (high, CVSS 7.5, published 15 Oct 2026) - [CVE-2026-109841: undici Subresource Integrity bypass via non-lowercase algorithm tokens](https://junglewise.ai/threats/cve-2026-109841-undici-is-an-http-client-library-for-node-js-in-versions-7-15-0) (medium, CVSS 5.9, published 15 Oct 2026) - [CVE-2026-109829: undici cache poisoning and cross-user disclosure via cross-origin redirects](https://junglewise.ai/threats/cve-2026-109829-undici-is-an-http-client-library-for-node-js-in-versions-7-0-0) (high, CVSS 7.4, published 15 Oct 2026) - [CVE-2026-109383: undici HTTP client TLS certificate validation bypass in Agent](https://junglewise.ai/threats/cve-2026-109383-undici-is-an-http-client-library-for-node-js-in-versions-4-0-0) (high, CVSS 7.4, published 15 Oct 2026) ## Most severe OpenJS Foundation Undici vulnerabilities - [CVE-2026-109869: undici HTTP client denial of service via excessive content-encodings](https://junglewise.ai/threats/cve-2026-109869-undici-is-an-http-client-library-for-node-js-in-versions-6-23-0) (high, CVSS 7.5, published 15 Oct 2026) - [CVE-2026-87018: undici denial of service via TLS 1.2 certificate renegotiation](https://junglewise.ai/threats/cve-2026-87018-undici-is-an-http-client-library-for-node-js-in-versions-4-2-1) (high, CVSS 7.5, published 15 Oct 2026) - [CVE-2026-109383: undici HTTP client TLS certificate validation bypass in Agent](https://junglewise.ai/threats/cve-2026-109383-undici-is-an-http-client-library-for-node-js-in-versions-4-0-0) (high, CVSS 7.4, published 15 Oct 2026) - [CVE-2026-109829: undici cache poisoning and cross-user disclosure via cross-origin redirects](https://junglewise.ai/threats/cve-2026-109829-undici-is-an-http-client-library-for-node-js-in-versions-7-0-0) (high, CVSS 7.4, published 15 Oct 2026) - [CVE-2026-116592: undici cache poisoning and cross-user disclosure via intermediate redirect](https://junglewise.ai/threats/cve-2026-116592-undici-is-an-http-client-for-node-js-in-versions-7-30-1-and-8-12) (high, CVSS 7.4, published 6 Nov 2026) - [CVE-2026-120474: undici cross-user cache disclosure via same-origin redirect](https://junglewise.ai/threats/cve-2026-120474-undici-is-an-http-client-for-node-js-in-versions-7-0-0-through-7) (medium, CVSS 6.5, published 6 Nov 2026) - [CVE-2026-109932: undici WebSocket client denial of service via unbounded PONG buffering](https://junglewise.ai/threats/cve-2026-109932-undici-is-an-http-client-library-for-node-js-in-versions-5-15-0) (medium, CVSS 5.9, published 15 Oct 2026) - [CVE-2026-109924: undici EventSource memory exhaustion denial of service](https://junglewise.ai/threats/cve-2026-109924-undici-is-an-http-client-library-for-node-js-in-versions-6-5-0) (medium, CVSS 5.9, published 15 Oct 2026) - [CVE-2026-87029: undici HTTP client denial of service in decompress interceptor](https://junglewise.ai/threats/cve-2026-87029-undici-is-an-http-client-library-for-node-js-in-versions-7-15-0) (medium, CVSS 5.9, published 15 Oct 2026) - [CVE-2026-109841: undici Subresource Integrity bypass via non-lowercase algorithm tokens](https://junglewise.ai/threats/cve-2026-109841-undici-is-an-http-client-library-for-node-js-in-versions-7-15-0) (medium, CVSS 5.9, published 15 Oct 2026) ## Vulnerabilities per week 12 vulnerabilities in the last four weeks, up from none in the four before. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 8 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 4 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other OpenJS Foundation technologies - [OpenJS Foundation Node.js](https://junglewise.ai/threats/technologies/openjs-foundation-node-js): 18 vulnerabilities - [OpenJS Foundation Multer](https://junglewise.ai/threats/technologies/multer): 14 vulnerabilities - [OpenJS Foundation Electron](https://junglewise.ai/threats/technologies/openjs-foundation-electron): 11 vulnerabilities - [OpenJS Foundation Morgan](https://junglewise.ai/threats/technologies/morgan): 4 vulnerabilities - [OpenJS Foundation Body-Parser](https://junglewise.ai/threats/technologies/body-parser): 3 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "OpenJS Foundation Undici vulnerabilities", https://junglewise.ai/threats/technologies/openjs-foundation-undici, 12 November 2026.