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CVE-2025-4673

Sensitive headers not cleared on cross-origin redirect in net/http

MEDIUM
6.8
CVSS Score
Published: June 11, 2025 at 04:42 PM UTC
Updated: June 17, 2026 at 09:33 AM UTC
1 product affected across 1 vendor.NET

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Severity
MEDIUM6.8
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

Proxy-Authorization and Proxy-Authenticate headers persisted on cross-origin redirects potentially leaking sensitive information.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

.NET· Go Standard Librarygo
60%
v < 1.23.101.24.0-0 ≤ v < 1.24.41.24.0-0
Affected range stops below 1.23.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.24.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

Source: [email protected]
https://go.dev/cl/679257
Source: [email protected]
https://go.dev/issue/73816
Source: [email protected]
https://groups.google.com/g/golang-announce/c/ufZ8WpEsA3A
Source: [email protected]
https://pkg.go.dev/vuln/GO-2025-3751

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.8MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED

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