Is CVE-2026-46598 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-46598 being exploited in the wild.

How severe is CVE-2026-46598?

Medium severity, with a CVSS score of 5.3, published 22 May 2026.

Which products and versions are affected?

golang.org/x/crypto (Go) SEMVER:introduced=0,fixed=0.52.0; golang.org/x/crypto/ssh/agent (Go) < 0.52.0.

Is there a fix for CVE-2026-46598?

Yes. golang.org/x/crypto (Go): upgrade to 0.52.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-46598 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-46598?

Check whether you run golang.org/x/crypto (Go) or golang.org/x/crypto/ssh/agent (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-46598: Go x/crypto denial of service in SSH agent Ed25519 parsing

Q: Is there a fix for CVE-2026-46598?

Yes. golang.org/x/crypto (Go): upgrade to 0.52.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-46598 attacked?

It is attacked over the network, in a software library.

Q: Am I affected by CVE-2026-46598?

Check whether you run golang.org/x/crypto (Go) or golang.org/x/crypto/ssh/agent (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-46598 · Severity: medium · CVSS 5.3 · Published 2026-05-22

A vulnerability in the Go SSH agent library can cause applications using it to crash when processing specifically malformed data. This could allow a remote attacker to disrupt services or disconnect users by sending "pathological" inputs that trigger a program panic. The issue primarily impacts the availability of services that rely on this library for SSH key management.

Technologies: golang.org/x/crypto (Go), golang.org/x/crypto/ssh/agent (Go). Vendors: Go.

Quick answers

Is CVE-2026-46598 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-46598 being exploited in the wild.
How severe is CVE-2026-46598?: Medium severity, with a CVSS score of 5.3, published 22 May 2026.
Which products and versions are affected?: golang.org/x/crypto (Go) SEMVER:introduced=0,fixed=0.52.0; golang.org/x/crypto/ssh/agent (Go) < 0.52.0.
Is there a fix for CVE-2026-46598?: Yes. golang.org/x/crypto (Go): upgrade to 0.52.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-46598 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-46598?: Check whether you run golang.org/x/crypto (Go) or golang.org/x/crypto/ssh/agent (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

golang.org/x/crypto (Go): upgrade to 0.52.0 or later
```
go get golang.org/x/crypto@v0.52.0
```

Technical details

A vulnerability exists in the golang.org/x/crypto/ssh/agent package where improper validation of array indices (CWE-129) occurs during the parsing of Ed25519 keys. Specifically, the library may attempt to create an 'ed25519.PrivateKey' by casting malformed wire bytes from untrusted network input. When these malformed objects are subsequently used, they trigger a runtime panic, leading to a denial-of-service. The issue affects the ForwardToAgent and ServeAgent functions. A fix is available in version 0.52.0 of the package.

Affected products

Go Project golang.org/x/crypto/ssh/agent < 0.52.0

Identifiers

CVE-2026-46598
GHSA-9m57-25v3-79x9
GO-2026-5033

Timeline

2026-05-22: disclosed: Initial disclosure by the Go Project
2026-05-22: advisory: NVD published CVE-2026-46598
2026-06-25: patched: GitHub Advisory Database entry published/updated with version 0.52.0 fix

References

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