Reported

October 19, 2026

Issued

October 20, 2026

Package

webpki-roots (crates.io)

Type

Vulnerability

Categories

• crypto-failure

Keywords

#certificate #distrust #x509

Aliases

• CVE-2026-111943

References

• https://github.com/rustls/webpki-roots/pull/133
• https://emudhra.we-have-a-problem.com/
• https://bugzilla.mozilla.org/show_bug.cgi?id=2083449

Patched

• >=1.0.10

Description

Affected versions include emSign ECC Root CA - G3, which can allow certificate paths through distrusted emSign intermediates.

Affected versions may accept certificate paths containing distrusted emSign intermediate public keys. The private keys corresponding to these intermediates are now well known.

Version 1.0.10+ removes this root.

Advisory available under CC0-1.0 license.