EUVD-2025-201106
2025-12-03
[email protected]
6.5
CVSS 3.1
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CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Lifecycle Timeline
4
Analysis Generated
Mar 15, 2026 - 16:14 vuln.today
EUVD ID Assigned
Mar 15, 2026 - 16:14 euvd
EUVD-2025-201106
Patch Released
Mar 15, 2026 - 16:14 nvd
Patch available
CVE Published
Dec 03, 2025 - 20:16 nvd
MEDIUM 6.5
Description
An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN *.example.com.
Analysis
An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN *.example.com.
Technical Context
This vulnerability is classified as Improper Certificate Validation (CWE-295).
Affected Products
Affected products: Golang Go
Remediation
A vendor patch is available. Apply it as soon as possible and verify the fix.
Priority Score
33
Low
Medium
High
Critical
KEV: 0
EPSS: +0.0
CVSS: +32
POC: 0
Vendor Status
Ubuntu
Priority: Mediumgolang-1.24
| Release | Status | Version |
|---|---|---|
| questing | needs-triage | - |
| upstream | needs-triage | - |
| plucky | ignored | end of life, was needs-triage |
| jammy | needs-triage | - |
| noble | needs-triage | - |
golang-1.25
| Release | Status | Version |
|---|---|---|
| jammy | DNE | - |
| noble | DNE | - |
| plucky | DNE | - |
| questing | needs-triage | - |
| upstream | needs-triage | - |
Debian
Bug #1121848golang-1.15
| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bullseye | vulnerable | 1.15.15-1~deb11u4 | - |
| (unstable) | fixed | (unfixed) | - |
golang-1.19
| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bookworm | vulnerable | 1.19.8-2 | - |
| (unstable) | fixed | (unfixed) | - |
golang-1.24
| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| trixie | vulnerable | 1.24.4-1 | - |
| forky, sid | fixed | 1.24.13-2 | - |
| (unstable) | fixed | 1.24.12-1 | - |
golang-1.25
| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| forky, sid | fixed | 1.25.8-1 | - |
| (unstable) | fixed | 1.25.6-1 | - |
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External POC / Exploit Code
Leaving vuln.today
Destination URL
POC code from unknown sources may be malicious, contain backdoors, or be fake.
Always review and test exploit code in a safe, isolated environment (VM/sandbox).
Verify the source reputation and cross-reference with known databases (Exploit-DB, GitHub Security).