Go JOSE: Panic during CBC-HMAC processing
Exact source revision recorded 26 Oct 2026 22:35:30 UTC. It does not establish the source's current position. Latest evidence.
cve-program · CVE-2026-116585
PublishedGo 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.
- Source published
- 26 Oct 2026 21:06:35 UTC
- Source modified
- 26 Oct 2026 21:06:35 UTC
- Observed here
- 26 Oct 2026 22:35:30 UTC
- Source terms
- CVE Program Terms of Use
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CVSS 4.0 · 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N