CVE-2026-42554

Fiber is a web framework for Go. Prior to 2.52.12 and 3.1.0, Cross-Site Scripting vulnerability in Go Fiber allows a remote attacker to inject arbitrary HTML/JavaScript by supplying Accept: text/html on any request whose handler passes attacker-influenced data to the AutoFormat feature. The...

CVE-2026-42554

CVE-2026-42554 describes an XSS in Fiber’s AutoFormat content negotiation. Affected: GoFiber/v3 up to 3.1.0 and GoFiber/v2 up to 2.52.12. Root cause: the html branch of AutoFormat can emit raw, attacker-influenced data wrapped in HTML when the client sends Accept: text/html, enabling injection of...

CVE-2026-42554 Fiber: XSS in AutoFormat Content Negotiation

Fiber is a web framework for Go. Prior to 2.52.12 and 3.1.0, Cross-Site Scripting vulnerability in Go Fiber allows a remote attacker to inject arbitrary HTML/JavaScript by supplying Accept: text/html on any request whose handler passes attacker-influenced data to the AutoFormat feature. The...

CVE-2026-42554 Fiber: XSS in AutoFormat Content Negotiation

Fiber is a web framework for Go. Prior to 2.52.12 and 3.1.0, Cross-Site Scripting vulnerability in Go Fiber allows a remote attacker to inject arbitrary HTML/JavaScript by supplying Accept: text/html on any request whose handler passes attacker-influenced data to the AutoFormat feature. The...

Fiber Cross-Site Scripting Vulnerabilities

Fiber is an open-source web framework written in Go. Versions of Fiber prior to 2.52.12 and 3.1.0 contain a cross-site scripting vulnerability. This vulnerability stems from cross-site scripting, allowing remote attackers to inject arbitrary HTML/JavaScript into any request by providing Accept:...

Cross-site Scripting (XSS)

Overview github.com/gofiber/fiber/v2 is an Express inspired web framework written in Go. Affected versions of this package are vulnerable to Cross-site Scripting XSS via the AutoFormat process. An attacker can inject arbitrary HTML or JavaScript by supplying a crafted Accept: text/html header and...

CVE-2026-30246

Fiber is a web framework for Go. In github.com/gofiber/fiber/v3 versions through 3.1.0, the default key generator in the cache middleware uses only the request path and does not include the query string. As a result, requests for the same path with different query parameters can share a cache key...

CVE-2026-30246 github.com/gofiber/fiber/v3 cache middleware can mix responses across query parameters

Fiber is a web framework for Go. In github.com/gofiber/fiber/v3 versions through 3.1.0, the default key generator in the cache middleware uses only the request path and does not include the query string. As a result, requests for the same path with different query parameters can share a cache key...

CVE-2026-30246 github.com/gofiber/fiber/v3 cache middleware can mix responses across query parameters

Fiber is a web framework for Go. In github.com/gofiber/fiber/v3 versions through 3.1.0, the default key generator in the cache middleware uses only the request path and does not include the query string. As a result, requests for the same path with different query parameters can share a cache key...

EUVD-2026-27313

Fiber is a web framework for Go. In github.com/gofiber/fiber/v3 versions through 3.1.0, the default key generator in the cache middleware uses only the request path and does not include the query string. As a result, requests for the same path with different query parameters can share a cache key...

CVE-2026-30246

Fiber is a web framework for Go. In github.com/gofiber/fiber/v3 versions through 3.1.0, the default key generator in the cache middleware uses only the request path and does not include the query string. As a result, requests for the same path with different query parameters can share a cache key...

Fiber security vulnerabilities

Fiber is an open-source web framework written in Go. Versions of Fiber 3.1.0 and earlier contain security vulnerabilities. These vulnerabilities stem from the default key generator used in the caching middleware, which only uses the request path without including the query string. As a result,...

Use of Cache Containing Sensitive Information

Overview Affected versions of this package are vulnerable to Use of Cache Containing Sensitive Information due to the default KeyGenerator process in the cache middleware not including query parameters when generating cache keys. An attacker can access or cause exposure of user-specific or...

Use of Cache Containing Sensitive Information

Overview Affected versions of this package are vulnerable to Use of Cache Containing Sensitive Information due to the default KeyGenerator process in the cache middleware not including query parameters when generating cache keys. An attacker can access or cause exposure of user-specific or...

CVE-2026-42554

creationtimestamp| type| source ---|---|--- 2026-04-25 13:08:32+00:00| published-proof-of-concept| https://github.com/gofiber/fiber/security/advisories/GHSA-qjv7-627w-8qjv...

SUSE CVE-2025-66630

Fiber is an Express inspired web framework written in Go. Before 2.52.11, on Go versions prior to 1.24, the underlying crypto/rand implementation can return an error if secure randomness cannot be obtained. Because no error is returned by the Fiber v2 UUID functions, application code may...

SUSE CVE-2026-25882

Fiber is an Express inspired web framework written in Go. A denial of service vulnerability exists in Fiber v2 and v3 that allows remote attackers to crash the application by sending requests to routes with more than 30 parameters. The vulnerability results from missing validation during route...

Fiber Security Feature Issue Vulnerability

Fiber is Fiber open source an open source Web framework written in Go language . Fiber suffers from a security signature issue vulnerability. The vulnerability stems from an error not returned by the UUID function and can be exploited by an attacker to use predictable or low entropy identifiers i...

CVE-2026-25891

Fiber is an Express inspired web framework written in Go. A Path Traversal CWE-22 vulnerability in Fiber allows a remote attacker to bypass the static middleware sanitizer and read arbitrary files on the server file system on Windows. This affects Fiber v3 through version 3.0.0. This has been...

CVE-2026-25891

Fiber is an Express inspired web framework written in Go. A Path Traversal CWE-22 vulnerability in Fiber allows a remote attacker to bypass the static middleware sanitizer and read arbitrary files on the server file system on Windows. This affects Fiber v3 through version 3.0.0. This has been...