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Vulnerabilities

Vulnerability · CVE-2025-4673

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

Published Jun 11, 2025 · catalog updated Oct 14, 2026 · Go standard library

Check if you run it

No confirmed exploitation is on record for CVE-2025-4673. EPSS is 0.67%. Act only if a listed version of Go standard library is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.67%
Remediation
Fix linked
Affected products
Go stdlib · vendor Go standard library net/http 1.24.0-0 <1.24.4

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Go stdlib0 → 1.23.10
  • vendor Go standard library net/http 1.24.0-0 <1.24.41.24.0-0 <1.24.4

How to fix CVE-2025-4673

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-4673. EPSS is 0.67%. Act only if a listed version of Go standard library is installed.

Which versions are affected?

Compare what you have installed with Go standard library net/http 1.24.0-0 <1.24.4 1.24.0-0 <1.24.4. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.67%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Related Odoo Git fixes

Quoted Community commit messages that cite this CVE. Presence of a commit is not proof that every edition or backport includes the fix. Enterprise proprietary diffs are never shown here. Timeline

  • Jun 6, 2025 · referenced

    update to go1.24.4

    update to go1.24.4 - https://github.com/golang/go/issues?q=milestone%3AGo1.24.4+label%3ACherryPickApproved - full diff: https://github.com/golang/go/compare/go1.24.3...go1.24.4 This release includes 3 security fixes following the security policy: - net/http: sensitive headers not cleared on cross-origin redirect Proxy-Authorization and Proxy-Authenticate headers persisted on cross-origin redirects potentially leaking sensitive information. Thanks to Takeshi Kaneko (GMO Cybersecurity by Ierae, Inc.) for reporting this issue. This is CVE-2025-4673 and Go issue https://go.dev/issue/73816. - os: inconsistent handling of O_CREATE|O_EXCL on Unix and Windows os.OpenFile(path, os.O_CREATE|O_EXCL) behaved differently on Unix and Windows systems when the target path was a dangling symlink. On Unix systems, OpenFile with O_CREATE and O_EXCL flags never follows symlinks. On Windows, whe…
    https://github.com/moby/moby/commit/1603ad636e1ebbd4b00d565a68661c9507e3e325

Timeline

Detection, updates, and resolution for this record.

  1. Jun 11, 2025 · OpenSSF OSV / OSV Scanner

    Detected

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

  2. Oct 14, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    stdlib fixed in 1.23.10

  3. Oct 14, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    stdlib fixed in 1.23.10

  4. Oct 14, 2026 · OpenSSF OSV / OSV Scanner

    Updated

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

Sources

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.