Overview
Important
This is a strongly recommended release for all op-challenger operators. It contains security fixes for the compromised eMudhra certificate authority (CVE-2026-111943) in op-challenger, cannon and the bundled kona-host, and other Go standard-library security fixes.
Other changes
Security
- op-challenger and cannon are built with Go 1.26.10, up from 1.26.8. Go 1.26.10 makes
crypto/x509reject the compromised eMudhra intermediate certificates (CVE-2026-111943), and Go 1.26.9 includes security fixes to thecrypto/tls,html/template,net/http,net/textprotoandospackages (#23546) rustls-webpkiis updated from 0.103.15 to 0.103.16 (RUSTSEC-2026-0382), so the bundled kona-host rejects the compromised eMudhra intermediate certificates on its TLS connections to L1, L2 and beacon RPCs, including connections that use the system trust store.webpki-rootsis updated from 1.0.7 to 1.0.10 (RUSTSEC-2026-0381), removing the eMudhra roots from the bundled Mozilla root set. Together these address CVE-2026-111943 (#23567)- The image's CA trust store (
ca-certificates-bundle20260909-r3) no longer includes the eMudhra emSign Root CA G3, C1 and C3 roots (#23566)
Full Changelog: op-challenger/v1.10.0...op-challenger/v1.10.1
🚢 Docker Image: