Lemur: Crafted CRL/OCSP URLs in uploaded certificates lead to post-authentication SSRF

Summary When verifying an uploaded certificate, lemur/certificates/verify.py extracts the CRL Distribution Point URL and the OCSP responder URL directly from the certificate's extensions and issues outbound requests to those URLs without scheme restriction or destination allow-listing. An...

PT-2026-59241

Summary When verifying an uploaded certificate, lemur/certificates/verify.py extracts the CRL Distribution Point URL and the OCSP responder URL directly from the certificate's extensions and issues outbound requests to those URLs without scheme restriction or destination allow-listing. An...

GHSA-54VG-PFH7-JQ95 Lemur: Crafted CRL/OCSP URLs in uploaded certificates lead to post-authentication SSRF

Summary When verifying an uploaded certificate, lemur/certificates/verify.py extracts the CRL Distribution Point URL and the OCSP responder URL directly from the certificate's extensions and issues outbound requests to those URLs without scheme restriction or destination allow-listing. An...

PT-2026-52653

Name of the Vulnerable Software and Affected Versions Lemur affected versions not specified Description An authenticated user with the operator role can induce the server to make unauthorized outbound requests to internal network resources. This occurs because the software extracts CRL Distributi...

GHSA-82J2-J2CH-GFR8 rustls-webpki: Denial of service via panic on malformed CRL BIT STRING

Summary bitstringflags in src/der.rs panics with an index-out-of-bounds when given a BIT STRING whose content is exactly 0x00 one byte: zero padding bits, zero data bytes. This is reachable through the public API BorrowedCertRevocationList::fromder via the issuingDistributionPoint CRL extension...

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...

CRL Distribution Point Scope Check Logic Error in AWS-LC

Summary AWS-LC is an open-source, general-purpose cryptographic library. Impact A logic error in CRL distribution point matching in AWS-LC allows a revoked certificate to bypass revocation checks during certificate validation, when the application enables CRL checking and uses partitioned CRLs wi...

GHSA-9F94-5G5W-GF6R CRL Distribution Point Scope Check Logic Error in AWS-LC

Summary AWS-LC is an open-source, general-purpose cryptographic library. Impact A logic error in CRL distribution point matching in AWS-LC allows a revoked certificate to bypass revocation checks during certificate validation, when the application enables CRL checking and uses partitioned CRLs wi...

CRLs not considered authoritative by Distribution Point due to faulty matching logic

If a certificate had more than one distributionPoint, then only the first distributionPoint would be considered against each CRL's IssuingDistributionPoint distributionPoint, and then the certificate's subsequent distributionPoints would be ignored. The impact was that correctly provided CRLs wou...

RUSTSEC-2026-0049 CRLs not considered authoritative by Distribution Point due to faulty matching logic

If a certificate had more than one distributionPoint, then only the first distributionPoint would be considered against each CRL's IssuingDistributionPoint distributionPoint, and then the certificate's subsequent distributionPoints would be ignored. The impact was that correctly provided CRLs wou...

CVE-2026-4428

A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs to be incorrectly rejected as out of scope, which allows a revoked certificate to bypass certificate revocation checks. To remediate this issue, users should upgrade to AWS-LC 1.71.0 or...

CVE-2026-4428 CRL Distribution Point Scope Check Logic Error in AWS-LC

A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs to be incorrectly rejected as out of scope, which allows a revoked certificate to bypass certificate revocation checks. To remediate this issue, users should upgrade to AWS-LC 1.71.0 or...

CVE-2026-4428 CRL Distribution Point Scope Check Logic Error in AWS-LC

A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs to be incorrectly rejected as out of scope, which allows a revoked certificate to bypass certificate revocation checks. To remediate this issue, users should upgrade to AWS-LC 1.71.0 or...

CRL Distribution Point Scope Check Logic Error in AWS-LC

A logic error in CRL distribution point matching in AWS-LC allows a revoked certificate to bypass revocation checks during certificate validation, when the application enables CRL checking and uses partitioned CRLs with Issuing Distribution Point IDP extensions. Customers of AWS services do not...

RUSTSEC-2026-0048 CRL Distribution Point Scope Check Logic Error in AWS-LC

A logic error in CRL distribution point matching in AWS-LC allows a revoked certificate to bypass revocation checks during certificate validation, when the application enables CRL checking and uses partitioned CRLs with Issuing Distribution Point IDP extensions. Customers of AWS services do not...

RUSTSEC-2026-0042 CRL Distribution Point Scope Check Logic Error in AWS-LC

A logic error in CRL distribution point matching in AWS-LC allows a revoked certificate to bypass revocation checks during certificate validation, when the application enables CRL checking and uses partitioned CRLs with Issuing Distribution Point IDP extensions. Customers of AWS services do not...

CRL Distribution Point Scope Check Logic Error in AWS-LC

A logic error in CRL distribution point matching in AWS-LC allows a revoked certificate to bypass revocation checks during certificate validation, when the application enables CRL checking and uses partitioned CRLs with Issuing Distribution Point IDP extensions. Customers of AWS services do not...

CVE-2026-4428: Improper Check for Certificate Revocation

A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs to be incorrectly rejected as out of scope, which allows a revoked certificate to bypass certificate revocation checks. To remediate this issue, users should upgrade to AWS-LC 1.71.0 or...

openssl: X.400 address type confusion in X.509 GeneralName

A type confusion vulnerability was found in OpenSSL when OpenSSL X.400 addresses processing inside an X.509 GeneralName. When CRL checking is enabled for example, the application sets the X509VFLAGCRLCHECK flag, this vulnerability may allow an attacker to pass arbitrary pointers to a memcmp call,...