CVE-2021-23409
Denial of Service (DoS)
HIGH
7.5
CVSS Score
Published: July 21, 2021 at 06:45 AM UTC
Updated: June 17, 2026 at 03:38 AM UTC
1 product affected across 1 vendorGo Proxyproto
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Severity
HIGH7.5
Exploit prediction
EPSS 2%
Description
The package github.com/pires/go-proxyproto before 0.6.0 are vulnerable to Denial of Service (DoS) via creating connections without the proxy protocol header.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 0.6.0
Affected range stops below 0.6.0, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (5)
x_refsource_MISCIssue TrackingThird Party Advisory
Source: [email protected]
https://github.com/pires/go-proxyproto/issues/65x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/pires/go-proxyproto/pull/74x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/pires/go-proxyproto/pull/74/commits/cdc63867da24fc609b727231f682670d0d1cd346x_refsource_MISCRelease NotesThird Party Advisory
Source: [email protected]
https://github.com/pires/go-proxyproto/releases/tag/v0.6.0x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMPIRESGOPROXYPROTO-1316439CVSS
7.5HIGHsnyk
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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