Versions of the package github.com/gin-gonic/gin before 1.9.0 are vulnerable to Improper Input Validation by allowing an attacker to use a specially crafted request via the X-Forwarded-Prefix header, potentially leading to cache poisoning. **Note:** Although this issue does not pose a significant threat on its own it can serve as an input vector for other more impactful vulnerabilities. However, successful exploitation may depend on the server configuration and whether the header is used in the application logic.

Affected: Go: github.com/gin-gonic/gin

Versions of the package github.com/gin-gonic/gin before version 1.9.0 are vulnerable to Improper Input Validation by allowing an attacker to use a specially crafted request via the X-Forwarded-Prefix header, potentially leading to cache poisoning.

**Note:** Although this issue does not pose a significant threat on its own it can serve as an input vector for other more impactful vulnerabilities. However, successful exploitation may depend on the server configuration and whether the header is used in the application logic.

golang.org/x/net/http2: avoid quadratic complexity in HPACK decoding golang-github-gin-gonic-gin: Improper Input Validation graphql: Insufficient checks in the OverlappingFieldsCanBeMergedRule.ts file when parsing large queries golang-github-gin-gonic-gin: Gin Web Framework does not properly sanitize filename parameter of Context.FileAttachment function golang: net/http, x/net/http2: rapid stream resets can cause excessive work (CVE-2023-44487) HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack)

Affected: Ubuntu:18.04:LTS: golang-github-gin-gonic-gin, Ubuntu:20.04:LTS: golang-github-gin-gonic-gin, Ubuntu:22.04:LTS: golang-github-gin-gonic-gin, Ubuntu:24.04:LTS: golang-github-gin-gonic-gin, Ubuntu:25.10: golang-github-gin-gonic-gin, Ubuntu:26.04:LTS: golang-github-gin-gonic-gin

Versions of the package github.com/gin-gonic/gin before 1.9.0 are vulnerable to Improper Input Validation by allowing an attacker to use a specially crafted request via the X-Forwarded-Prefix header, potentially leading to cache poisoning. **Note:** Although this issue does not pose a significant threat on its own it can serve as an input vector for other more impactful vulnerabilities. However, successful exploitation may depend on the server configuration and whether the header is used in the application logic.