CVE-2023-26125: Versions of the package github.com/gin-gonic/gin before 1.9.0 are vulnerable to Improper Input Validation by a

Q: How do I fix CVE-2023-26125?

gin: upgrade to 1.9.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-26125 being exploited?

CVE-2023-26125 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-26125 affect?

CVE-2023-26125 affects gin. Severity is medium (CVSS 5.6). 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.

Q: How urgent is CVE-2023-26125?

Priority 45/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 5.6REMOTEUPGRADE

CVE-2023-26125 is a medium-severity flaw (CVSS 5.6) affecting gin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 c

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.6 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 40%)
CISA exploited list	No
Weakness	CWE-20, CWE-77
Published	2023-05-04
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: gin-gonic

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-05-04 05:15 UTCPublished CVE record published
2026-06-17 05:42 UTCUpdated Record last modified

gin-gonic gin UPGRADE

Affected: < 1.9.0

Fixed in: 1.9.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy gin || rpm -q gin || gin --version

2. UPGRADE to 1.9.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade gin

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade gin

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-26125?

gin: upgrade to 1.9.0. Exact commands for each OS are on this page.

Is CVE-2023-26125 being exploited?

CVE-2023-26125 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-26125 affect?

CVE-2023-26125 affects gin. Severity is medium (CVSS 5.6). 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.

How urgent is CVE-2023-26125?

Priority 45/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

GitHub vulnerabilities

Related CVEs

CVE-2023-31873 HIGH 7.8 DOWNGRADE Gin 0.7.4 allows execution of arbitrary code when a crafted file is opened, e.g., via require('child_process')
CVE-2023-29401 MEDIUM 4.3 UPGRADE The filename parameter of the Context.FileAttachment function is not properly sanitized
CVE-2020-36567 HIGH 7.5 UPGRADE Unsanitized input in the default logger in github.com/gin-gonic/gin before v1.6.0 allows remote attackers to i

References

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