PT-2026-35462 · Julia · Libgcrypt Jll

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

OSV

The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.

Related Identifiers

JLSEC-2026-124

Affected Products

Libgcrypt Jll

References · 6

• https://osv.dev/vulnerability/JLSEC-2026-124 · Vendor Advisory
• https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=3462280f2e23e16adf3ed5176e0f2413d8861320 · Note
• https://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-elgamal-pt2 · Note
• https://security.gentoo.org/glsa/202210-13 · Note
• https://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-elgamal-pt1 · Note
• https://eprint.iacr.org/2021/923 · Note