CVE-2026-62999 Copier: Percent-encoded dot segments in template URLs can allow trusted-prefix escape (Incomplete fix for trust-prefix bypass)

Copier is a library and CLI app for rendering project templates. From 9.5.0 through 9.16.0, percent-encoded parent-directory segments or encoded path separators in a template URL can match a configured trusted repository prefix before an HTTP server or Git transport decodes the path, allowing...

CVE-2026-62999

Copier (library and CLI for rendering project templates) is affected from version 9.5.0 through 9.16.0. Percent-encoded parent-directory segments or encoded path separators in a template URL could match a configured trusted repository prefix before HTTP server or Git transport decoding, enabling ...

EUVD-2026-45375

Impact: @fastify/http-proxy versions from 9.4.0 up to and including 11.5.0 fail to validate the resolved WebSocket destination path against the configured rewrite prefix. The WebSocket routing path in WebSocketProxy.findUpstream resolves the destination via the WHATWG URL constructor, which...

CVE-2026-53951 Copier: trust-prefix bypass via path traversal runs tasks unprompted

Copier is a library and CLI app for rendering project templates. In versions 9.5.0 through 9.15.1, the trust setting's prefix match copier/settings.py compares the template URL against a trusted prefix with a raw str.startswith and no path normalization, while the URL is normalized when the...

CVE-2026-53951 Copier: trust-prefix bypass via path traversal runs tasks unprompted

Copier is a library and CLI app for rendering project templates. In versions 9.5.0 through 9.15.1, the trust setting's prefix match copier/settings.py compares the template URL against a trusted prefix with a raw str.startswith and no path normalization, while the URL is normalized when the...

GHSA-3P34-W4F6-5XH2 better-helperjs Vulnerable to Directory Traversal via String Prefix Bypass in Static Server

Summary A directory traversal vulnerability exists in the production static file server of better-helperjs = 3.0.5. Attackers can read arbitrary files located in adjacent directory structures that share the same string prefix as the intended static root directory. Details The framework utilizes a...

GO-2026-5201 SiYuan vulnerable to reflected XSS via SVG namespace prefix bypass in SanitizeSVG (getDynamicIcon, unauthenticated) in github.com/siyuan-note/siyuan/kernel

SiYuan vulnerable to reflected XSS via SVG namespace prefix bypass in SanitizeSVG getDynamicIcon, unauthenticated in github.com/siyuan-note/siyuan/kernel...

OliveTin has Unvalidated `ot_`-prefixed Arguments that Bypass Input Filtering

Description The filterToDefinedArgumentsOnly function in the executor is intended to discard any arguments not explicitly defined in the action's configuration. However, a special case allows any argument whose name starts with ot to bypass this filter. While two system arguments...

CVE-2026-53839 OpenClaw < 2026.5.7 - Hostname Prefix Matching Bypass in Trusted Retry Endpoint Validation

OpenClaw before 2026.5.7 contains a hostname validation vulnerability in retry endpoint checks that allows matching hostname prefixes instead of exact hostnames. Attackers can exploit this by crafting a hostname prefix resembling a trusted host to send authentication material to untrusted endpoin...

CVE-2026-53839 OpenClaw < 2026.5.7 - Hostname Prefix Matching Bypass in Trusted Retry Endpoint Validation

OpenClaw before 2026.5.7 contains a hostname validation vulnerability in retry endpoint checks that allows matching hostname prefixes instead of exact hostnames. Attackers can exploit this by crafting a hostname prefix resembling a trusted host to send authentication material to untrusted endpoin...

CVE-2026-50568

Fission (Kubernetes-native serverless framework) has a lexical path check vulnerability in SanitizeFilePath (pkg/utils/utils.go) that used strings.HasPrefix(path, safedir) instead of a directory-boundary check. This allowed a sibling directory escape (e.g., /packages-extra/evil under /packages) t...

Astra Linux – Vulnerability in Chromium

Insufficient policy enforcement in cookies in Google Chrome prior to version 104.0.5112.101 allowed a remote attacker to bypass cookie prefix restrictions through a crafted HTML page...

CVE-2026-6342 Group prefix matching bypass for subscriptions

Mattermost Plugins versions =11.5 11.1.5 10.13.11 11.3.4.0 fail to appropriately check for valid namespaces which allows plugin users to create subscriptions to groups that were not whitelisted via creating groups that share the same prefix as a whitelisted group. Mattermost Advisory ID:...

CVE-2026-6342

Mattermost plugins vulnerable to a namespace prefix-matching bypass. Affected: Mattermost Plugins versions

CVE-2026-42590 Gotenberg: ExifTool group-prefix syntax bypasses dangerous-tag blocklist

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.30.0, The ExifTool metadata write blocklist in Gotenberg can be bypassed using ExifTool's group-prefix syntax, enabling arbitrary file rename, move, hardlink, and symlink creation on the server. ExifTool supports group-prefix...

CVE-2026-42885 Audiobookshelf: Path prefix bypass in filesystem existence check leaks out-of-scope file existence

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.32.2, the POST /api/filesystem/pathexists endpoint uses String.startsWith to validate that a resolved file path is within a library folder. This check fails for sibling directories whose names share a common prefix e.g.,...

CVE-2026-42885 Audiobookshelf: Path prefix bypass in filesystem existence check leaks out-of-scope file existence

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.32.2, the POST /api/filesystem/pathexists endpoint uses String.startsWith to validate that a resolved file path is within a library folder. This check fails for sibling directories whose names share a common prefix e.g.,...

CVE-2026-42885

CVE-2026-42885 : Audiobookshelf (self-hosted server) has a path-prefix bypass in the POST /api/filesystem/pathexists check. Before version 2.32.2, the code uses String.startsWith() to verify a resolved path is within a library folder, which fails for sibling directories with a shared prefix (for ...

CVE-2026-42885 Audiobookshelf: Path prefix bypass in filesystem existence check leaks out-of-scope file existence

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.32.2, the POST /api/filesystem/pathexists endpoint uses String.startsWith to validate that a resolved file path is within a library folder. This check fails for sibling directories whose names share a common prefix e.g.,...

CVE-2026-45191

Net::CIDR::Lite versions before 0.24 for Perl does not properly consider extraneous zero characters in CIDR mask values, which may allow IP ACL bypass. Mask forms like "/00" and "/01" pass validation and parse to the same prefix as their unpadded value. See also CVE-2026-45190...