CVE-2026-93599

rustls-webpki (Rust TLS cryptography library) versions through 0.103.12 and 0.104.0-alpha.6 are affected by a panic in bit_string_flags() in src/der.rs. The root cause is that the input guard fails to reject a named-bit BIT STRING whose content is exactly [0x00] (zero padding bits, no data bytes)...

rustls-webpki: rustls-webpki: Denial of Service via crafted Certificate Revocation List

A flaw was found in rustls-webpki. A remote attacker, by influencing an application to parse a specially crafted Certificate Revocation List CRL that contains an empty onlySomeReasons value in its issuingDistributionPoint extension, could trigger a panic. This vulnerability leads to a denial of...

rustls-webpki: rustls-webpki: Denial of Service via crafted Certificate Revocation List

A flaw was found in rustls-webpki. A remote attacker, by influencing an application to parse a specially crafted Certificate Revocation List CRL that contains an empty onlySomeReasons value in its issuingDistributionPoint extension, could trigger a panic. This vulnerability leads to a denial of...

rustls-webpki: rustls-webpki: Denial of Service via crafted Certificate Revocation List

A flaw was found in rustls-webpki. A remote attacker, by influencing an application to parse a specially crafted Certificate Revocation List CRL that contains an empty onlySomeReasons value in its issuingDistributionPoint extension, could trigger a panic. This vulnerability leads to a denial of...

RUSTSEC-2026-0104 Reachable panic in certificate revocation list parsing

A panic was reachable when parsing certificate revocation lists via BorrowedCertRevocationList::fromder or OwnedCertRevocationList::fromder. This was the result of mishandling a syntactically valid empty BIT STRING appearing in the onlySomeReasons element of a IssuingDistributionPoint CRL...

Reachable panic in certificate revocation list parsing

A panic was reachable when parsing certificate revocation lists via BorrowedCertRevocationList::fromder or OwnedCertRevocationList::fromder. This was the result of mishandling a syntactically valid empty BIT STRING appearing in the onlySomeReasons element of a IssuingDistributionPoint CRL...

PT-2026-34530

A panic was reachable when parsing certificate revocation lists via BorrowedCertRevocationList::from der or OwnedCertRevocationList::from der. This was the result of mishandling a syntactically valid empty BIT STRING appearing in the onlySomeReasons element of a IssuingDistributionPoint CRL...