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Fencer Vulns
high 7.1

CVE-2020-28483 json

HTTP Response Splitting

published 2021-01-20 5 y ago modified 2026-09-10 1 mo ago also GHSA-h395-qcrw-5vmq , GO-2021-0052 , EUVD-2021-1332

cvss
7.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 71%
public exploits
0
none known

Summary

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

Patch / fix

  • go github.com/gin-gonic/gin 1.7.7
  • gin-gonic gin 1.7.0
  • golang-github-gin-gonic-gin Debian 14, Debian 13, Debian 12 1.8.1-1

debian advisories DEBIAN-CVE-2020-28483

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-28483 updated cvss 7.1

gin: HTTP response splitting

  • Red Hat Advanced Cluster Management for Kubernetes 2 gin
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.33% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N
GitHub 3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

Affected packages

ecosystem package affected fixed in
go github.com/gin-gonic/gin
<1.7.7
1.7.7

Affected products

  • n/a github.com/gin-gonic/gin

Classification

Weakness
  • CWE-444 Inconsistent Interpretation of HTTP Requests
  • CWE-113 Improper Neutralization of CRLF Sequences in HTTP Headers

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.