# github.com/xyproto/algernon (Go) vulnerabilities Source: https://junglewise.ai/threats/technologies/github-com-xyproto-algernon Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/github-com-xyproto-algernon.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 10 vulnerabilities in github.com/xyproto/algernon (Go): 0 in the last 7 days and 0 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-52792, was published on 2 July 2026. ## Counts - Last 7 days: 0 - Last 30 days: 0 - Last 90 days: 0 - All time: 10 (1 critical, 0 exploited in the wild) ## About github.com/xyproto/algernon (Go) A web server with built-in support for Lua, Markdown, HTTP/2, and QUIC. ## Latest github.com/xyproto/algernon (Go) vulnerabilities - [CVE-2026-52792: xyproto Algernon source disclosure via NTFS filename manipulation](https://junglewise.ai/threats/cve-2026-52792-xyproto-algernon-source-disclosure-via-ntfs-filename-manipulation) (high, CVSS 4, published 2 Jul 2026) - [GO-2026-5300 - Algernon: Auto-refresh SSE event server binds to all interfaces with Access-Control-Allow-Origin: * and…](https://junglewise.ai/threats/go-2026-5300-algernon-auto-refresh-sse-event-server-binds-to-all-459dcf1f) (info, published 25 Jun 2026) - [CVE-2026-48126: xyproto Algernon path traversal and RCE via Host header](https://junglewise.ai/threats/cve-2026-48126-xyproto-algernon-path-traversal-and-rce-via-host-header) (high, CVSS 8.2, published 26 May 2026) - [CVE-2026-46431: xyproto Algernon permissive CORS policy in SSE event server](https://junglewise.ai/threats/cve-2026-46431-xyproto-algernon-permissive-cors-policy-in-sse-event-server) (medium, CVSS 4.3, published 26 May 2026) - [CVE-2026-45728: xyproto Algernon information disclosure in single-file mode](https://junglewise.ai/threats/cve-2026-45728-xyproto-algernon-information-disclosure-in-single-file-mode) (high, CVSS 7.5, published 26 May 2026) - [CVE-2026-45721: xyproto Algernon remote code execution via handler.lua path traversal](https://junglewise.ai/threats/cve-2026-45721-xyproto-algernon-remote-code-execution-via-handler-lua-path) (critical, CVSS 9, published 26 May 2026) - [CVE-2026-46430: xyproto Algernon insecure default bind address in SSE server](https://junglewise.ai/threats/cve-2026-46430-xyproto-algernon-insecure-default-bind-address-in-sse-server) (medium, CVSS 4.3, published 20 May 2026) - [Xyproto Algernon missing authentication in auto-refresh SSE server](https://junglewise.ai/threats/xyproto-algernon-missing-authentication-in-auto-refresh-sse-server-2a3e2f07) (medium, CVSS 5.3, published 19 May 2026) - [CVE-2025-65754: GO-2025-4228 - Algernon Cross-Site Scripting vulnerability in github.com/xyproto/algernon](https://junglewise.ai/threats/cve-2025-65754-algernon-cross-site-scripting-vulnerability) (medium, CVSS 6.1, published 10 Dec 2025) - [CVE-2023-26131: Algernon engine and themes vulnerable to Cross-site Scripting](https://junglewise.ai/threats/cve-2023-26131-algernon-engine-and-themes-vulnerable-to-cross-site-scripting) (low, CVSS 3.1, published 31 May 2023) ## Most severe github.com/xyproto/algernon (Go) vulnerabilities - [CVE-2026-45721: xyproto Algernon remote code execution via handler.lua path traversal](https://junglewise.ai/threats/cve-2026-45721-xyproto-algernon-remote-code-execution-via-handler-lua-path) (critical, CVSS 9, published 26 May 2026) - [CVE-2026-48126: xyproto Algernon path traversal and RCE via Host header](https://junglewise.ai/threats/cve-2026-48126-xyproto-algernon-path-traversal-and-rce-via-host-header) (high, CVSS 8.2, published 26 May 2026) - [CVE-2026-45728: xyproto Algernon information disclosure in single-file mode](https://junglewise.ai/threats/cve-2026-45728-xyproto-algernon-information-disclosure-in-single-file-mode) (high, CVSS 7.5, published 26 May 2026) - [CVE-2026-52792: xyproto Algernon source disclosure via NTFS filename manipulation](https://junglewise.ai/threats/cve-2026-52792-xyproto-algernon-source-disclosure-via-ntfs-filename-manipulation) (high, CVSS 4, published 2 Jul 2026) - [CVE-2025-65754: GO-2025-4228 - Algernon Cross-Site Scripting vulnerability in github.com/xyproto/algernon](https://junglewise.ai/threats/cve-2025-65754-algernon-cross-site-scripting-vulnerability) (medium, CVSS 6.1, published 10 Dec 2025) - [Xyproto Algernon missing authentication in auto-refresh SSE server](https://junglewise.ai/threats/xyproto-algernon-missing-authentication-in-auto-refresh-sse-server-2a3e2f07) (medium, CVSS 5.3, published 19 May 2026) - [CVE-2026-46431: xyproto Algernon permissive CORS policy in SSE event server](https://junglewise.ai/threats/cve-2026-46431-xyproto-algernon-permissive-cors-policy-in-sse-event-server) (medium, CVSS 4.3, published 26 May 2026) - [CVE-2026-46430: xyproto Algernon insecure default bind address in SSE server](https://junglewise.ai/threats/cve-2026-46430-xyproto-algernon-insecure-default-bind-address-in-sse-server) (medium, CVSS 4.3, published 20 May 2026) - [CVE-2023-26131: Algernon engine and themes vulnerable to Cross-site Scripting](https://junglewise.ai/threats/cve-2023-26131-algernon-engine-and-themes-vulnerable-to-cross-site-scripting) (low, CVSS 3.1, published 31 May 2023) - [GO-2026-5300 - Algernon: Auto-refresh SSE event server binds to all interfaces with Access-Control-Allow-Origin: * and…](https://junglewise.ai/threats/go-2026-5300-algernon-auto-refresh-sse-event-server-binds-to-all-459dcf1f) (info, published 25 Jun 2026) ## Vulnerabilities per week Nothing was published in the last eight weeks. | 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 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other Go technologies - [github.com/mattermost/mattermost-server (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server): 297 vulnerabilities - [github.com/mattermost/mattermost-server/v6 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v6): 222 vulnerabilities - [github.com/mattermost/mattermost/server/v8 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v8): 207 vulnerabilities - [github.com/mattermost/mattermost-server/v5 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v5): 199 vulnerabilities - [stdlib (Go)](https://junglewise.ai/threats/technologies/go-stdlib): 178 vulnerabilities - [github.com/siyuan-note/siyuan/kernel (Go)](https://junglewise.ai/threats/technologies/github-com-siyuan-note-siyuan-kernel): 160 vulnerabilities - [code.gitea.io/gitea (Go)](https://junglewise.ai/threats/technologies/code-gitea-io-gitea): 126 vulnerabilities - [code.vikunja.io/api (Go)](https://junglewise.ai/threats/technologies/code-vikunja-io-api): 91 vulnerabilities - [gogs.io/gogs (Go)](https://junglewise.ai/threats/technologies/gogs-io-gogs): 81 vulnerabilities - [github.com/traefik/traefik/v2 (Go)](https://junglewise.ai/threats/technologies/github-com-traefik-traefik-v2): 78 vulnerabilities - [github.com/traefik/traefik (Go)](https://junglewise.ai/threats/technologies/github-com-traefik-traefik): 75 vulnerabilities - [github.com/usememos/memos (Go)](https://junglewise.ai/threats/technologies/github-com-usememos-memos): 75 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, "github.com/xyproto/algernon (Go) vulnerabilities", https://junglewise.ai/threats/technologies/github-com-xyproto-algernon, 13 November 2026.