Deno: process.loadEnvFile() bypasses env permission checks and mutates process.env with only read access

Summary In Deno, environment access is gated by the env permission. You can deny it with --deny-env, or restrict it to a specific allowlist with --allow-env=FOO,BAR. The expectation is that a program running without env permission cannot change process.env. process.loadEnvFile the Node-compatible...

GHSA-83PC-3RW9-QPWJ Deno: WebSocket API sandbox bypass via missing post-DNS check

Summary When a WebSocket connection was opened, Deno checked the destination hostname against --deny-net rules but did not re-check the IP addresses that hostname resolved to. An attacker-controlled script could use a specially crafted domain name that passes the hostname check yet resolves to a...

Deno: WebSocket API sandbox bypass via missing post-DNS check

Summary When a WebSocket connection was opened, Deno checked the destination hostname against --deny-net rules but did not re-check the IP addresses that hostname resolved to. An attacker-controlled script could use a specially crafted domain name that passes the hostname check yet resolves to a...

GHSA-CPGJ-F7G3-2PP2 Deno: `fetch()` API sandbox bypass via missing DNS resolution check

Summary When fetch was called, Deno checked the destination hostname against --deny-net rules but did not re-check the IP addresses that hostname resolved to. An attacker-controlled script could use a specially crafted domain name that passes the hostname check yet resolves to a denied IP,...

Deno: `fetch()` API sandbox bypass via missing DNS resolution check

Summary When fetch was called, Deno checked the destination hostname against --deny-net rules but did not re-check the IP addresses that hostname resolved to. An attacker-controlled script could use a specially crafted domain name that passes the hostname check yet resolves to a denied IP,...

PT-2026-50155

Name of the Vulnerable Software and Affected Versions Deno versions prior to 2.8.1 Description Environment access is managed by the env permission, which can be restricted via --deny-env or an allowlist using --allow-env=FOO,BAR. The process.loadEnvFile function, a Node-compatible API for loading...

PT-2026-50146

Name of the Vulnerable Software and Affected Versions Deno versions prior to 2.7.10 Description In the node:child process implementation on Windows, the escapeShellArg helper function fails to properly quote arguments containing cmd.exe metacharacters such as &, |, , ^, !, , and and does not...

PT-2026-50148

Name of the Vulnerable Software and Affected Versions Deno versions prior to 2.8.0 Description The Node.js compatibility TCP path fails to re-verify network permissions after hostname resolution. While the network permission model is intended to apply rules to the resolved IP address, affected...

PT-2026-50145

Name of the Vulnerable Software and Affected Versions Deno versions prior to 2.7.14 Description Deno's permission system on macOS enforces filesystem and execution restrictions by comparing requested paths against those supplied to --deny-read, --deny-write, --deny-run, or --deny-ffi. The...

PT-2026-50153

Name of the Vulnerable Software and Affected Versions Deno versions prior to 2.8.1 Description When the fetch function is called, the runtime validates the destination hostname against --deny-net rules but fails to re-verify the IP addresses that the hostname resolves to. This allows an...

GHSA-GV7W-RQVM-QJHR Withdrawn Advisory: esbuild: Missing binary integrity verification in Deno module enables remote code execution via NPM_CONFIG_REGISTRY

Withdrawn Advisory This advisory has been withdrawn because the affected package was incorrectly identified and the actual affected package is not in a supported ecosystem. This link is maintained to preserve external references. Original Description Summary The esbuild Deno module lib/deno/mod.t...

Withdrawn Advisory: esbuild: Missing binary integrity verification in Deno module enables remote code execution via NPM_CONFIG_REGISTRY

Withdrawn Advisory This advisory has been withdrawn because the affected package was incorrectly identified and the actual affected package is not in a supported ecosystem. This link is maintained to preserve external references. Original Description Summary The esbuild Deno module lib/deno/mod.t...

openSUSE 16 Security Update : syft (openSUSE-SU-2026:20928-1)

The remote openSUSE 16 host has packages installed that are affected by a vulnerability as referenced in the openSUSE- SU-2026:20928-1 advisory. Changes in syft: - Update to version 1.45.0: Added Features - Add support for ZapAddOns as jar files 4654 4932 @douglasclarke - MySQL binary classifier...

PT-2026-48378

Name of the Vulnerable Software and Affected Versions yt-dlp versions 2023.09.24 through 2026.06.08 Description When curl is used as an external downloader, cookies may be leaked to an unintended host during an HTTP redirect or when the host for download fragments differs from the parent manifest...

PT-2026-48380

Name of the Vulnerable Software and Affected Versions yt-dlp versions prior to 2026.06.09 Description When using aria2c as an external downloader for fragmented manifest formats like HLS or DASH streams, insufficiently sanitized input allows an attacker to perform arbitrary file writes. This occu...

PT-2026-48379

Name of the Vulnerable Software and Affected Versions yt-dlp versions prior to 2026.06.09 Description A flaw allows a remote attacker to write arbitrary OS-shortcut files, such as .desktop, .url, and .webloc, to the user's filesystem. This occurs because the file extension allowlist used to preve...

Deno's TLS retry copies stale upgrade hook, risking plaintext traffic

Summary A flaw in Deno's Node.js tls compatibility layer could cause a TLS client to transmit application data in plaintext after a connection retry. When autoSelectFamily was enabled and the first address-family attempt failed, the socket reinitialization path reused a stale TLS upgrade hook tha...

GHSA-CHQV-56WV-7564 Deno's TLS retry copies stale upgrade hook, risking plaintext traffic

Summary A flaw in Deno's Node.js tls compatibility layer could cause a TLS client to transmit application data in plaintext after a connection retry. When autoSelectFamily was enabled and the first address-family attempt failed, the socket reinitialization path reused a stale TLS upgrade hook tha...

CVE-2026-49406

creationtimestamp| type| source ---|---|--- 2026-05-27 13:09:16+00:00| published-proof-of-concept| https://github.com/denoland/deno/security/advisories/GHSA-968w-xfqw-vp9q...

CVE-2026-49402

creationtimestamp| type| source ---|---|--- 2026-05-27 13:08:13+00:00| published-proof-of-concept| https://github.com/denoland/deno/security/advisories/GHSA-7xh3-mhg9-jcw8 2026-06-17 10:36:55+00:00| seen| https://bsky.app/profile/azu.bsky.social/post/3moi4lqjxxk2f 2026-07-23 00:07:07+00:00| seen|...