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CVE-2026-46598— Invoking pathological inputs can lead to client panic in golang.org/x/crypto/ssh/agent

Quick assessment

Affected
golang.org/x/crypto golang.org/x/crypto/ssh/agent
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Google Go是美国谷歌（Google）公司的一种静态强类型、编译型、并发型，并具有垃圾回收功能的编程语言。 Google Go存在安全漏洞，该漏洞源于通过强制转换格式错误的线缆字节创建ed25519.PrivateKey，可能导致使用时发生崩溃。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.41% · P35

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
golang.org/x/crypto golang.org/x/crypto/ssh/agent < 0.52.0 affected
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I. Basic Information for CVE-2026-46598

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Invoking pathological inputs can lead to client panic in golang.org/x/crypto/ssh/agent
Source: CVE Program / CVE List V5
Vulnerability Description
For certain crafted inputs, a 'ed25519.PrivateKey' was created by casting malformed wire bytes, leading to a panic when used.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Google Go 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google Go是美国谷歌（Google）公司的一种静态强类型、编译型、并发型，并具有垃圾回收功能的编程语言。 Google Go存在安全漏洞，该漏洞源于通过强制转换格式错误的线缆字节创建ed25519.PrivateKey，可能导致使用时发生崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
golang.org/x/crypto golang.org/x/crypto/ssh/agent 0 ~ 0.52.0 -

II. Public POCs for CVE-2026-46598

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III. Intelligence Information for CVE-2026-46598

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Patches & Fixes for CVE-2026-46598 (1)

Vendor Advisories for CVE-2026-46598 (2)

Other References for CVE-2026-46598 (1)

Same Patch Batch · golang.org/x/crypto · 2026-05-22 · 13 CVEs total

CVE-2026-42508 Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts
CVE-2026-39829 Invoking pathological RSA/DSA parameters may cause DoS in golang.org/x/crypto/ssh
CVE-2026-39835 Invoking server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh
CVE-2026-39831 Invoking bypass of FIDO/U2F security keys physical interaction in golang.org/x/crypto/ssh
CVE-2026-39833 Invoking key constraints not enforced in golang.org/x/crypto/ssh/agent
CVE-2026-39834 Invoking infinite loop on large channel writes in golang.org/x/crypto/ssh
CVE-2026-39830 Invoking client can cause server deadlock on unexpected responses in golang.org/x/crypto/
CVE-2026-39828 Invoking bypass of certificate restrictions in golang.org/x/crypto/ssh
CVE-2026-39827 Invoking memory leak when rejecting channels can lead to DoS in golang.org/x/crypto/ssh
CVE-2026-39832 Invoking agent constraints dropped when forwarding keys in golang.org/x/crypto/ssh/agent
CVE-2026-46597 Invoking byte arithmetic causes underflow and panic in golang.org/x/crypto/ssh
CVE-2026-46595 Invoking VerifiedPublicKeyCallback permissions skip enforcement in golang.org/x/crypto/ss

IV. Related Vulnerabilities

Same product: golang.org/x/crypto/ssh/agent
Same vendor: golang.org/x/crypto

V. Comments for CVE-2026-46598

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