Vulnerability · Published Oct 29, 2025 · Assigned by Go
CVE-2025-58189ALPN negotiation error contains attacker controlled information in crypto/tls
Medium 5.3
In plain English
A medium-severity security flaw in crypto/tls from Go standard library. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.5%top 59.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
When Conn.Handshake fails during ALPN negotiation the error contains attacker controlled information (the ALPN protocols sent by the client) which is not escaped.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.22 | go | 1.24.8-r0 | ALPINE-CVE-2025-58189 |
| Alpine:v3.23 | go | 1.25.2-r0 | ALPINE-CVE-2025-58189 |
| Alpine:v3.24 | go | 1.25.2-r0 | ALPINE-CVE-2025-58189 |
| Debian:12 | golang-1.19 | no fix listed | DEBIAN-CVE-2025-58189 |
| Debian:13 | golang-1.24 | no fix listed | DEBIAN-CVE-2025-58189 |
| Go | stdlib | 1.24.8, 1.25.2 | GO-2025-4008 |
| Ubuntu:22.04:LTS | golang-1.17 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:22.04:LTS | golang-1.18 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:22.04:LTS | golang-1.20 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:22.04:LTS | golang-1.21 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:24.04:LTS | golang-1.21 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:22.04:LTS | golang-1.22 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:24.04:LTS | golang-1.22 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:22.04:LTS | golang-1.23 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:24.04:LTS | golang-1.23 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:25.10 | golang-1.23 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:26.04:LTS | golang-1.23 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:22.04:LTS | golang-1.24 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:24.04:LTS | golang-1.24 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:25.10 | golang-1.24 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:26.04:LTS | golang-1.24 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:22.04:LTS | golang-1.25 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:24.04:LTS | golang-1.25 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:25.10 | golang-1.25 | no fix listed | UBUNTU-CVE-2025-58189 |
| Ubuntu:26.04:LTS | golang-1.25 | no fix listed | UBUNTU-CVE-2025-58189 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Go standard library | crypto/tls | 0 – before 1.24.81.25.0 – before 1.25.2 |