CVE-2026-58402 Hugo default code block renderer XSS via unescaped code-fence language

Hugo is a static site generator. From 0.60.0 until 0.163.3, Hugo's default code-block renderer wrote the Markdown code-fence language or info-string into the code class="language-…" data-lang="…" wrapper without HTML escaping. A fence info-string containing a quote and a script payload breaks out...

CVE-2026-58402 Hugo default code block renderer XSS via unescaped code-fence language

Hugo is a static site generator. From 0.60.0 until 0.163.3, Hugo's default code-block renderer wrote the Markdown code-fence language or info-string into the code class="language-…" data-lang="…" wrapper without HTML escaping. A fence info-string containing a quote and a script payload breaks out...

CVE-2026-58402

Hugo is a static site generator. From 0.60.0 until 0.163.3, Hugo's default code-block renderer wrote the Markdown code-fence language or info-string into the code class="language-…" data-lang="…" wrapper without HTML escaping. A fence info-string containing a quote and a script payload breaks out...

CVE-2026-58402 Hugo default code block renderer XSS via unescaped code-fence language

Hugo is a static site generator. From 0.60.0 until 0.163.3, Hugo's default code-block renderer wrote the Markdown code-fence language or info-string into the code class="language-…" data-lang="…" wrapper without HTML escaping. A fence info-string containing a quote and a script payload breaks out...

CVE-2026-58402: Improper Neutralization of Input During Web Page Generation

Hugo is a static site generator. From 0.60.0 until 0.163.3, Hugo's default code-block renderer wrote the Markdown code-fence language or info-string into the code class="language-…" data-lang="…" wrapper without HTML escaping. A fence info-string containing a quote and a script payload breaks out...

CVE-2026-53428

Memory Allocation with Excessive Size Value vulnerability in leandrocp mdex allows an unauthenticated attacker to cause a denial of service through unbounded memory allocation. comraknif::lumisadapter::LumisAdapter::parsehighlightlines in native/comraknif/src/lumisadapter.rs eagerly expands a...

CVE-2026-53428 Unbounded memory allocation in highlight_lines range expansion in mdex

Memory Allocation with Excessive Size Value vulnerability in leandrocp mdex allows an unauthenticated attacker to cause a denial of service through unbounded memory allocation. comraknif::lumisadapter::LumisAdapter::parsehighlightlines in native/comraknif/src/lumisadapter.rs eagerly expands a...

CVE-2026-53428 Unbounded memory allocation in highlight_lines range expansion in mdex

Memory Allocation with Excessive Size Value vulnerability in leandrocp mdex allows an unauthenticated attacker to cause a denial of service through unbounded memory allocation. comraknif::lumisadapter::LumisAdapter::parsehighlightlines in native/comraknif/src/lumisadapter.rs eagerly expands a...

CVE-2026-53428

Memory Allocation with Excessive Size Value vulnerability in leandrocp mdex allows an unauthenticated attacker to cause a denial of service through unbounded memory allocation. comraknif::lumisadapter::LumisAdapter::parsehighlightlines in native/comraknif/src/lumisadapter.rs eagerly expands a...

PT-2026-53681

Memory Allocation with Excessive Size Value vulnerability in leandrocp mdex allows an unauthenticated attacker to cause a denial of service through unbounded memory allocation. comrak nif::lumis adapter::LumisAdapter::parse highlight lines in native/comrak nif/src/lumis adapter.rs eagerly expands...

GHSA-Q76J-GCG9-VXC6 Hugo: XSS via unescaped code-fence language in default code block renderer

Hugo's default code-block renderer wrote the Markdown code-fence language / info-string into the wrapper without HTML escaping. A fence info-string containing a quote and a payload breaks out of the attribute and injects a live script element. This is not an issue if you fully trust every file...

Cross-site Scripting (XSS)

Overview Affected versions of this package are vulnerable to Cross-site Scripting XSS via the default code block rendering. An attacker can execute arbitrary JavaScript in the context of users viewing generated pages by supplying a crafted code-fence language info-string containing malicious...

Hugo: XSS via unescaped code-fence language in default code block renderer

Hugo's default code-block renderer wrote the Markdown code-fence language / info-string into the wrapper without HTML escaping. A fence info-string containing a quote and a payload breaks out of the attribute and injects a live script element. This is not an issue if you fully trust every file...

PT-2026-53795

Hugo's default code-block renderer wrote the Markdown code-fence language / info-string into the wrapper without HTML escaping. A fence info-string containing a quote and a payload breaks out of the attribute and injects a live script element. This is not an issue if you fully trust every file...

CVE-2026-39965 TypeBot: SSRF via Open Redirect Bypass in HTTP Request and Code Blocks

TypeBot is a chatbot builder tool. Versions 3.15.2 and prior contain an SSRF via Open Redirect Bypass as the HTTP Request block and Code block validate the initial request URL via validateHttpReqUrl to block private IPs and cloud metadata hostnames. However, the HTTP clients ky and fetch follow 3...

Security Bulletin: Highlight.js Prototype Pollution Vulnerability in Code Block Parsing, affects watsonx.data

Summary Highlight.js versions prior to 9.18.2 and 10.1.2 are vulnerable to prototype pollution via malicious HTML in user-supplied code blocks. This can cause unexpected application behavior or crashes, representing a potential DoS vector. This can affect watsonx.data. Vulnerability Details...

PT-2026-30289

Summary to markdown is vulnerable when serializing attacker-controlled content. The handler emits a fixed three-backtick fenced code block, but writes decoded text content into that fence without choosing a delimiter longer than any backtick run inside the content. An attacker can place backticks...

CVE-2026-0863 Sandbox escape in n8n Python task runner allows for arbitrary code execution on the underlying host.

Using string formatting and exception handling, an attacker may bypass n8n's python-task-executor sandbox restrictions and run arbitrary unrestricted Python code in the underlying operating system. The vulnerability can be exploited via the Code block by an authenticated user with basic permissio...

CVE-2025-12958 Rankology SEO and Analytics Tool <= 2.0 - Incorrect Authorization to Authenticated (Editor+) Header & Footer Code Creation

The Rankology SEO and Analytics Tool plugin for WordPress is vulnerable to unauthorized modification of data due to an incorrect capability check on the 'rankologycodeblock' page in all versions up to, and including, 2.0. This makes it possible for authenticated attackers, with Editor-level acces...

CVE-2025-12958 Rankology SEO and Analytics Tool <= 2.0 - Incorrect Authorization to Authenticated (Editor+) Header & Footer Code Creation

The Rankology SEO and Analytics Tool plugin for WordPress is vulnerable to unauthorized modification of data due to an incorrect capability check on the 'rankologycodeblock' page in all versions up to, and including, 2.0. This makes it possible for authenticated attackers, with Editor-level acces...