PT-2026-35461 · Julia · Libgcrypt Jll

Published 2026-04-17 · Updated 2026-04-17

OSV

Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.

Related Identifiers

JLSEC-2026-123

Affected Products

Libgcrypt Jll

References · 13

• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL · Vendor Advisory
• https://osv.dev/vulnerability/JLSEC-2026-123 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB · Vendor Advisory
• https://oracle.com/security-alerts/cpuoct2021.html · Note
• https://dev.gnupg.org/T5466 · Note
• https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61 · Note
• https://oracle.com/security-alerts/cpujan2022.html · Note
• https://oracle.com/security-alerts/cpujul2022.html · Note
• https://dev.gnupg.org/T5305 · Note
• https://security.gentoo.org/glsa/202210-13 · Note
• https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html · Note
• https://dev.gnupg.org/T5328 · Note
• https://oracle.com/security-alerts/cpuapr2022.html · Note