CVE-2025-4673· NVD / CVE Program· CNA Go

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

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

MediumCVSS 6.8 · v3.1—No exploit Fix available

Pre-auth

Published: Jun 11, 2025
Updated: Jun 17, 2026
EPSS: 0.7% · 50th percentile
CWE: CWE-201

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Action score

Monitor

Low priority for now.

CVSS: 27 / 40 · 6.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.7%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

Affected systems

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Go). Independent of NVD's CPE analysis and usually ahead of it.

Go standard library net/http
- before 1.23.10affected · semver
- 1.24.0-0 and later · before 1.24.4affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
AlmaLinux:10	golang-docs	before 1.24.4-1.el10_0.alma.1	1.24.4-1.el10_0.alma.1
AlmaLinux:10	golang-misc	before 1.24.4-1.el10_0.alma.1	1.24.4-1.el10_0.alma.1
AlmaLinux:10	golang-src	before 1.24.4-1.el10_0.alma.1	1.24.4-1.el10_0.alma.1
AlmaLinux:10	golang-tests	before 1.24.4-1.el10_0.alma.1	1.24.4-1.el10_0.alma.1
AlmaLinux:10	opentelemetry-collector	before 0.127.0-3.el10_0	0.127.0-3.el10_0
AlmaLinux:8	delve	before 1.24.1-1.module_el8.10.0+3977+66935a26	1.24.1-1.module_el8.10.0+3977+66935a26
AlmaLinux:8	go-toolset	before 1.24.4-1.module_el8.10.0+4027+41c6fed2	1.24.4-1.module_el8.10.0+4027+41c6fed2
AlmaLinux:8	golang	before 1.24.4-1.module_el8.10.0+4027+41c6fed2	1.24.4-1.module_el8.10.0+4027+41c6fed2
AlmaLinux:8	golang-bin	before 1.24.4-1.module_el8.10.0+4027+41c6fed2	1.24.4-1.module_el8.10.0+4027+41c6fed2
AlmaLinux:8	golang-docs	before 1.24.4-1.module_el8.10.0+4027+41c6fed2	1.24.4-1.module_el8.10.0+4027+41c6fed2
AlmaLinux:8	golang-misc	before 1.24.4-1.module_el8.10.0+4027+41c6fed2	1.24.4-1.module_el8.10.0+4027+41c6fed2
AlmaLinux:8	golang-src	before 1.24.4-1.module_el8.10.0+4027+41c6fed2	1.24.4-1.module_el8.10.0+4027+41c6fed2
AlmaLinux:8	golang-tests	before 1.24.4-1.module_el8.10.0+4027+41c6fed2	1.24.4-1.module_el8.10.0+4027+41c6fed2
AlmaLinux:9	go-toolset	before 1.24.4-1.el9_6	1.24.4-1.el9_6
AlmaLinux:9	golang	before 1.24.4-1.el9_6	1.24.4-1.el9_6
AlmaLinux:9	golang-bin	before 1.24.4-1.el9_6	1.24.4-1.el9_6
AlmaLinux:9	golang-docs	before 1.24.4-1.el9_6	1.24.4-1.el9_6
AlmaLinux:9	golang-misc	before 1.24.4-1.el9_6	1.24.4-1.el9_6
AlmaLinux:9	golang-race	before 1.24.4-1.el9_6	1.24.4-1.el9_6
AlmaLinux:9	golang-src	before 1.24.4-1.el9_6	1.24.4-1.el9_6
AlmaLinux:9	golang-tests	before 1.24.4-1.el9_6	1.24.4-1.el9_6
AlmaLinux:9	opentelemetry-collector	before 0.127.0-2.el9_6	0.127.0-2.el9_6
Debian:12	golang-1.19	all versions	—
Debian:13	golang-1.24	before 1.24.4-1	1.24.4-1

+52

Same product

go standard library: all records

Other highest-scoring records for the same primary product.

CVE-2023-45288HTTP/2 CONTINUATION flood in net/http
58Plan
CVE-2026-56853Apply ReadHeaderTimeout when doing unencrypted HTTP/2 check in net/http
30Monitor
CVE-2024-24791Denial of service due to improper 100-continue handling in net/http
30Monitor
CVE-2024-45336Sensitive headers incorrectly sent after cross-domain redirect in net/http
24Monitor
CVE-2025-58186Lack of limit when parsing cookies can cause memory exhaustion in net/http
21Monitor
CVE-2025-47910CrossOriginProtection insecure bypass patterns not limited to exact matches in net/http
21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Go standard library net/http	1.23.10	Vendor (CNA)
Go standard library net/http	1.24.4	Vendor (CNA)
almalinux:delve	1.24.1-1.module_el8.10.0+3977+66935a26 · AlmaLinux:8	Package registry (OSV)
almalinux:go-toolset	1.24.4-1.module_el8.10.0+4027+41c6fed2 · AlmaLinux:8	Package registry (OSV)
almalinux:golang	1.24.4-1.module_el8.10.0+4027+41c6fed2 · AlmaLinux:8	Package registry (OSV)
almalinux:golang-bin	1.24.4-1.module_el8.10.0+4027+41c6fed2 · AlmaLinux:8	Package registry (OSV)
almalinux:golang-docs	1.24.4-1.module_el8.10.0+4027+41c6fed2 · AlmaLinux:8	Package registry (OSV)
almalinux:golang-misc	1.24.4-1.module_el8.10.0+4027+41c6fed2 · AlmaLinux:8	Package registry (OSV)
almalinux:golang-race	1.24.4-1.el9_6 · AlmaLinux:9	Package registry (OSV)
almalinux:golang-src	1.24.4-1.module_el8.10.0+4027+41c6fed2 · AlmaLinux:8	Package registry (OSV)
almalinux:golang-tests	1.24.4-1.module_el8.10.0+4027+41c6fed2 · AlmaLinux:8	Package registry (OSV)
almalinux:opentelemetry-collector	0.127.0-2.el9_6 · AlmaLinux:9	Package registry (OSV)
debian:golang-1.24	1.24.4-1 · Debian:13	Package registry (OSV)
Go:stdlib	1.23.10	Package registry (OSV)
Go:stdlib	1.24.4	Package registry (OSV)
opensuse:go1.23	1.23.10-150000.1.34.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:go1.23-openssl	1.23.12-150600.13.9.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:go1.24	1.24.4-150000.1.26.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:go1.24-openssl	1.24.6-150600.13.9.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:golang-github-prometheus-prometheus	3.13.2-1.1 · openSUSE:Tumbleweed	Package registry (OSV)
opensuse:govulncheck-vulndb	0.0.20250612T141001-1.1 · openSUSE:Tumbleweed	Package registry (OSV)
red hat:delve	0:1.24.1-1.module+el8.10.0+22945+b2c96a17 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:delve-debuginfo	0:1.24.1-1.module+el8.10.0+22945+b2c96a17 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:delve-debugsource	0:1.24.1-1.module+el8.10.0+22945+b2c96a17 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:go-toolset	0:1.24.4-1.module+el8.10.0+23323+67916f33 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:golang	0:1.24.4-1.module+el8.10.0+23323+67916f33 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:golang-bin	0:1.24.4-1.module+el8.10.0+23323+67916f33 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:golang-docs	0:1.24.4-1.module+el8.10.0+23323+67916f33 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:golang-misc	0:1.24.4-1.module+el8.10.0+23323+67916f33 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:golang-race	0:1.24.4-1.el9_6 · Red Hat:enterprise_linux:9::appstream	Package registry (OSV)

+12

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Takeshi Kaneko (GMO Cybersecurity by Ierae, Inc.)

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2024-45336135 days apartSensitive headers incorrectly sent after cross-domain redirect in net/http
24Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
Special conditions such as timing or configuration are required.

If successful

Confidentiality: high · data can be read
Integrity: none
Availability: none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector: Network
Attack complexity: High
Privileges required: None
User interaction: None
Scope: Changed
Confidentiality impact: High
Integrity impact: None
Availability impact: None

Weakness class (CWE)

CWE-201 · Insertion of Sensitive Information Into Sent Data

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

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Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

Fix✗ → ✓Sep 28, 2026, 10:09 PM UTC

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records