When gin is exposed directly to the internet, a client's IP can be spoofed by setting the X-Forwarded-For header. This affects all versions of package github.com/gin-gonic/gin under 1.7.7.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-28483
• gin-gonic/gin#2632
• gin-gonic/gin@bfc8ca2
• https://github.com/gin-gonic/gin/releases/tag/v1.7.0
• https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGINGONICGIN-1041736
• gin-gonic/gin#2232
• gin-gonic/gin#2473
• gin-gonic/gin#2862
• gin-gonic/gin#2474 (comment)
• gin-gonic/gin#2675
• gin-gonic/gin#2844
• gin-gonic/gin@03e5e05
• gin-gonic/gin@5929d52
• https://github.com/gin-gonic/gin/releases/tag/v1.7.7
• https://pkg.go.dev/vuln/GO-2021-0052
• https://github.com/gin-gonic/gin/pull/2844/files#diff-e6ce689a25eaef174c2dd51fe869fabbe04a6c6afbd416b23eda138c82e761baR1432