Improper Input Validation Affecting github.com/phires/go-guerrilla package, versions <1.6.7


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-GOLANG-GITHUBCOMPHIRESGOGUERRILLA-9689889
  • published13 Apr 2025
  • disclosed1 Apr 2025
  • creditPaul B

Introduced: 1 Apr 2025

NewCVE-2025-31135  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade github.com/phires/go-guerrilla to version 1.6.7 or higher.

Overview

Affected versions of this package are vulnerable to Improper Input Validation due to the handling of the PROXY command. An attacker can spoof their IP address by sending multiple PROXY commands, with later ones overriding earlier ones.

Note:

This is only exploitable if ProxyOn is enabled.

References

CVSS Base Scores

version 4.0
version 3.1