{"id":"CVE-2026-105766","published":"2026-10-05T20:17:20.620","lastModified":"2026-10-06T15:03:59.427","description":"Use of the backend-facing $scheme variable in the trailing-slash directory redirect in nginx.conf of Chainguard Academy (edu) from commit 0b75ff98057f69b044a3e7194e428066ac5ad0d4 before commit 93dc0e50739c225f5aee2e803800a47fc0feb906 allows an on-path network attacker to read or modify documentation content served to a victim via an HTTPS request for a slashless directory path, because TLS terminates at the load balancer in front of Nginx and the resulting 301 response redirects the client to a plaintext http:// URL. Browsers that ship the HSTS preload list are not affected, because the .dev top-level domain is preloaded; clients that do not enforce HSTS, such as command-line HTTP clients and scripts that follow redirects, are affected.","cvssScore":3.1,"cvssSeverity":"LOW","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","cwes":["CWE-319"],"vendors":[],"products":[],"references":[{"url":"https://github.com/chainguard-dev/edu/commit/93dc0e50739c225f5aee2e803800a47fc0feb906","tags":[]},{"url":"https://github.com/chainguard-dev/edu/pull/3989","tags":[]}],"exploitRefs":[{"url":"https://github.com/chainguard-dev/edu/commit/93dc0e50739c225f5aee2e803800a47fc0feb906","tags":[]},{"url":"https://github.com/chainguard-dev/edu/pull/3989","tags":[]}],"hasPoc":true,"ai":null}