Improper Encoding or Escaping of Output Affecting std/crypto/tls package, versions <1.24.8>=1.25.0 <1.25.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published6 Jan 2026
- disclosed29 Oct 2025
- creditNational Cyber Security Centre Finland
Introduced: 29 Oct 2025
CVE-2025-58189 (opens in a new tab)How to fix?
Upgrade std/crypto/tls to version 1.24.8, 1.25.2 or higher.
Overview
std/crypto/tls is a Go standard library package std/crypto/tls
Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output.
Go Vulnerability Report:
When Conn.Handshake fails during ALPN negotiation, the error contains attacker-controlled information (the ALPN protocols sent by the client), which is not escaped.