Web3Signer is an open-source signing service capable of signing for multiple platforms (Ethereum consensus and execution clients) using private keys stored in an external vault, or encrypted on a diskConsensys-Incorporated/web3signer on GitHub
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This is a recommended update. The main highlight is the Docker images' move to Eclipse Temurin JRE 25.0.5+8, which addresses the eMudhra CA compromise (CVE-2026-91403, CVE-2026-114820). A default Web3Signer setup is not affected by the compromise.Web3Signer release notes
Features Added. Scheduled the Glamsterdam (Gloas) upgrade on Sepolia for epoch 353024 (October 6, 2026 13:53:36 UTC). [#1240][PR_1240] · Signing support for the upcoming Glamsterdam (GLOAS / ePBS) fork, matching remote-signing-api v1.4.0.Web3Signer release notes
Features Added. Support for Hashicorp Vault Kubernetes authentication PR 1195 · The eth1 signing endpoint (POST /api/v1/eth1/sign/{identifier}) accepts an optional applyHash field.Web3Signer release notes
Security. Updated base Docker image packages to address CVE-2025-68973 (HIGH severity) in gpgv package · Docker images now apply all available security updates during build · Updated jackson dependencies to 2.21.1 · Features Added.Web3Signer release notes
Breaking Changes. Java25 Docker image. Java 25, which is the latest Long-Term Support release, is used in the docker image instead of previous LTS version, Java 21. /reload Endpoint Response Format Changed.Web3Signer release notes
Breaking changes. eea* RPC methods and other privacy supporting classes have been removed since Privacy feature has been removed from Besu 25.6.0 · Features Added.Web3Signer release notes
Upcoming Breaking Changes. eea* RPC methods and other privacy supporting classes will be removed since Privacy feature has been removed from [Besu 25.6.0][besu_2560] · GOSSIP_MAX_SIZE, MAX_CHUNK_SIZE, TTFB_TIMEOUT, and RESP_TIMEOUT configuration variables will…Web3Signer release notes
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