CVE-2026-23968

Copier is a library and CLI app for rendering project templates. Prior to version 9.11.2, Copier suggests that it's safe to generate a project from a safe template, i.e. one that doesn't use unsafe features like custom Jinja extensions which would require passing the --UNSAFE,--trust flag. As it...

CVE-2026-24046 Backstage has a Possible Symlink Path Traversal in Scaffolder Actions

Backstage is an open framework for building developer portals. Multiple Scaffolder actions and archive extraction utilities were vulnerable to symlink-based path traversal attacks. An attacker with access to create and execute Scaffolder templates could exploit symlinks to read arbitrary files vi...

CVE-2026-24046 Backstage has a Possible Symlink Path Traversal in Scaffolder Actions

Backstage is an open framework for building developer portals. Multiple Scaffolder actions and archive extraction utilities were vulnerable to symlink-based path traversal attacks. An attacker with access to create and execute Scaffolder templates could exploit symlinks to read arbitrary files vi...

CVE-2026-23986 Copier safe template has arbitrary filesystem write access via directory symlinks when _preserve_symlinks: true

Copier is a library and CLI app for rendering project templates. Prior to version 9.11.2, Copier suggests that it's safe to generate a project from a safe template, i.e. one that doesn't use unsafe features like custom Jinja extensions which would require passing the --UNSAFE,--trust flag. As it...

CVE-2026-23986 Copier safe template has arbitrary filesystem write access via directory symlinks when _preserve_symlinks: true

Copier is a library and CLI app for rendering project templates. Prior to version 9.11.2, Copier suggests that it's safe to generate a project from a safe template, i.e. one that doesn't use unsafe features like custom Jinja extensions which would require passing the --UNSAFE,--trust flag. As it...

Copier safe template has arbitrary filesystem write access via directory symlinks when _preserve_symlinks: true

Impact Copier suggests that it's safe to generate a project from a safe template, i.e. one that doesn't use unsafe features like custom Jinja extensions which would require passing the --UNSAFE,--trust flag. As it turns out, a safe template can currently write to arbitrary directories outside the...

EUVD-2026-4141

Copier safe template has arbitrary filesystem write access via directory symlinks when preservesymlinks: true...

EUVD-2026-4142

Copier safe template has arbitrary filesystem read access via symlinks when preservesymlinks: false...

GHSA-XJHM-GP88-8PFX Copier safe template has arbitrary filesystem read access via symlinks when _preserve_symlinks: false

Impact Copier suggests that it's safe to generate a project from a safe template, i.e. one that doesn't use unsafe features like custom Jinja extensions which would require passing the --UNSAFE,--trust flag. As it turns out, a safe template can currently include arbitrary files/directories outsid...

Copier safe template has arbitrary filesystem read access via symlinks when _preserve_symlinks: false

Impact Copier suggests that it's safe to generate a project from a safe template, i.e. one that doesn't use unsafe features like custom Jinja extensions which would require passing the --UNSAFE,--trust flag. As it turns out, a safe template can currently include arbitrary files/directories outsid...

Regular Expression Denial Of Service (ReDoS)

@modelcontextprotocol/sdk is vulnerable to Regular Expression Denial Of Service ReDoS. The vulnerability is due to inefficiently constructed regular expressions with nested quantifiers in the UriTemplate class, which allows an attacker to supply a crafted URI that triggers catastrophic backtracki...

CVE-2025-64087

A Server-Side Template Injection SSTI vulnerability in the FreeMarker component of opensagres XDocReport v1.0.0 to v2.1.0 allows attackers to execute arbitrary code via injecting crafted template expressions...

PT-2026-3875

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 0.12.2, 0.13.2, 0.14.1, and 0.15.0 @backstage/plugin-scaffolder-backend versions prior to 2.2.2, 3.0.2, and 3.1.1 @backstage/plugin-scaffolder-node versions prior to 0.11.2 and 0.12.3 Description The software is...

PT-2026-3871

Name of the Vulnerable Software and Affected Versions Copier versions prior to 9.11.2 Description Copier, a library and CLI app for rendering project templates, exhibited a flaw where it incorrectly identified templates as safe, even if they contained arbitrary files and directories outside the...

GHSA-R8W2-W357-9PJV XDocReport affected by a Server-Side Template Injection (SSTI) vulnerability

A Server-Side Template Injection SSTI vulnerability in the FreeMarker component of opensagres XDocReport v1.0.0 to v2.1.0 allows attackers to execute arbitrary code via injecting crafted template expressions...

XDocReport affected by a Server-Side Template Injection (SSTI) vulnerability

A Server-Side Template Injection SSTI vulnerability in the FreeMarker component of opensagres XDocReport v1.0.0 to v2.1.0 allows attackers to execute arbitrary code via injecting crafted template expressions...

EUVD-2026-3403

Kimai has an Authenticated Server-Side Template Injection SSTI...

Kimai has an Authenticated Server-Side Template Injection (SSTI)

Kimai 2.45.0 - Authenticated Server-Side Template Injection SSTI Vulnerability Summary | Field | Value | |-------|-------| | Title | Authenticated SSTI via Permissive Export Template Sandbox || Attack Vector | Network | | Attack Complexity | Low | | Privileges Required | High Admin with export...

Improper Neutralization of Special Elements Used in a Template Engine

Overview Affected versions of this package are vulnerable to Improper Neutralization of Special Elements Used in a Template Engine when processing untrusted template expressions. An attacker can execute arbitrary code on the server by injecting specially crafted template payloads. Remediation...

CVE-2025-56520

creationtimestamp| type| source ---|---|--- 2026-01-20 04:04:17+00:00| confirmed| https://github.com/projectdiscovery/nuclei-templates/tree/main/http/cves/2025/CVE-2025-56520.yaml 2026-01-20 21:03:06+00:00| seen| https://bsky.app/profile/beikokucyber.bsky.social/post/3mcv2l36vqa2k 2026-02-13...