CVE-2026-116587: high-severity vulnerability in go-jose
Go JOSE: DoS when parsing JWKs that contain RSA keys
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.4%
Go JOSE provides an implementation of the Javascript Object Signing and Encryption set of standards in Go, including support for JSON Web Encryption (JWE), JSON Web Signature (JWS), and JSON Web Token (JWT) standards. Prior to 4.1.6, go-jose parses attacker-controlled RSA modulus and prime values from JWKs without enforcing size and consistency bounds before passing them to crypto/rsa.PrivateKey.Validate. On Go 1.24 and later, crafted large or degenerate RSA parameters can make that validation consume cubic CPU time, allowing remote denial of service in applications that parse JWKs from untrusted sources. This issue is fixed in version 4.1.6.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
go-jose · go-joseRelated CVEs — go-jose
In the same product, most dangerous first.
CVE-2024-28180MEDIUMGo JOSE vulnerable to Improper Handling of Highly Compressed Data (Data Amplification)EPSS 2.0%CVE-2026-34986HIGHGo JOSE affect by a panic in JWE decryptionEPSS 0.7%CVE-2025-27144MEDIUMGo JOSE's Parsing Vulnerable to Denial of ServiceEPSS 0.4%CVE-2026-116586MEDIUMGo JOSE: Panics in JSON parsingEPSS 0.3%CVE-2026-116585MEDIUMGo JOSE: Panic during CBC-HMAC processingEPSS 0.3%