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Improper Input Validation The advisory has been revoked - it doesn't affect any version of package golang.src  (opens in a new tab)

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Exploit Maturity
Proof of Concept
EPSS
0.92% (76th percentile)

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  • Snyk IDSNYK-RHEL10-GOLANGSRC-14923100
  • published14 Jan 2026
  • disclosed13 Jul 2021
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Introduced: 13 Jul 2021

CVE-2021-34558  (opens in a new tab)
CWE-20  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream golang.src package and not the golang.src package as distributed by RHEL.

The crypto/tls package of Go through 1.16.5 does not properly assert that the type of public key in an X.509 certificate matches the expected type when doing a RSA based key exchange, allowing a malicious TLS server to cause a TLS client to panic.

References