Home/CVE/When Conn.Handshake fails during ALPN negotiation the error contains attacker controlled information (the ALPN protocols
CVE

CVE-2025-58189

When Conn.Handshake fails during ALPN negotiation the error contains attacker controlled information (the ALPN protocols

When Conn.Handshake fails during ALPN negotiation the error contains attacker controlled information (the ALPN protocols sent by the client) which is not escaped.

MEDIUM · CVSS 5.3 EPSS 0.00018
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-532Insertion of Sensitive Information into Log File
▤

Affected Products & Versions

2
golang go< 1.24.8
golang go>= 1.25.0 and < 1.25.2
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go stdlib fixed in 1.24.8, 1.25.2
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · security@golang.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD29 Oct 2025 · 11:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

22
rhsaRHSA-2026:7385Moderate
rhsaRHSA-2026:7291Moderate
suse-csafopenSUSE-SU-2026:20301-1
suse-csafopenSUSE-SU-2026:20308-1
suse-csafSUSE-SU-2026:20623-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://go.dev/cl/707776Patch
https://go.dev/issue/75652Issue Tracking
https://groups.google.com/g/golang-announce/c/4Emdl2iQ_bIMailing ListRelease Notes
https://pkg.go.dev/vuln/GO-2025-4008Vendor Advisory
http://www.openwall.com/lists/oss-security/2025/10/08/1Mailing ListRelease NotesThird Party Advisory
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