PT-2026-41578 · Julia · Mbedtls Jll

Published 2026-05-07 · Updated 2026-05-07

OSV

CVSS v3.1

5.1

Medium

Base vector

AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

In Mbed TLS through 4.0.0, there is a compiler-induced timing side channel (in RSA and CBC/ECB decryption) that only occurs with LLVM's select-optimize feature. TF-PSA-Crypto through 1.0.0 is also affected.

Fix

Related Identifiers

JLSEC-2026-463

Affected Products

Mbedtls Jll

References · 5

• https://osv.dev/vulnerability/JLSEC-2026-463 · Vendor Advisory
• https://github.com/Mbed-TLS/mbedtls/releases · Note
• https://github.com/Mbed-TLS/TF-PSA-Crypto/releases · Note
• https://mbed-tls.readthedocs.io/en/latest/security-advisories · Note
• https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-compiler-induced-constant-time-violations · Note