CVE-2026-116585

Medium

Description

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 4.1.5, decrypting untrusted JWE ciphertext with A128CBC-HS256, A192CBC-HS384, or A256CBC-HS512 can pass an empty ciphertext buffer to CBC-HMAC unpadding. Insufficient validation allows the empty buffer to be indexed, causing a panic and denial of service. Applications that decrypt attacker-controlled ciphertext with one of these content-encryption algorithms are affected. This issue is fixed in version 4.1.5.

SeverityMedium
CVSS6.9
Exploit probability18. percentile0.3%
ProductGithub.com/go-jose/go-jose/v4
PublishedOct 26, 2026
First seenOct 26, 2026
Weakness typeCWE-129CWE-129

How to fix

Update
  • github.com/go-jose/go-jose/v44.1.5 or later

Affected products

ProductAffected versionsFixed in
github.com/go-jose/go-jose/v4Gov < 4.1.54.1.5
github.com/go-jose/go-jose/v3Gov ≤ 3.0.5—
microsoft azl3_azcopy_10.25.1-10No range specified—
microsoft azl3_cert-manager_1.12.15-15No range specified—
microsoft azl3_containerd2_2.3.7-1No range specified—
microsoft azl3_containerized-data-importer_1.62.0-9No range specified—
microsoft azl3_influxdb_2.7.5-22No range specified—
microsoft azl3_kubernetes_1.30.10-32No range specified—
microsoft azl3_moby-containerd-cc_1.7.7-19No range specified—
microsoft azl3_packer_1.9.5-23No range specified—
microsoft azl3_skopeo_1.14.4-15No range specified—
microsoft azl3_telegraf_1.31.0-35No range specified—
microsoft azl3_vitess_19.0.4-16No range specified—
microsoft azl3_dcos-cli_1.2.0-22No range specified—
microsoft azl3_ignition-flatcar_2.22.0-6No range specified—

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