crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation

A flaw was found in Go's crypto/x509 package. A remote attacker could exploit this by presenting a specially crafted certificate chain containing a large number of policy mappings. This inefficient validation process consumes excessive resources, which can lead to a denial of service DoS for...

PT-2026-45962

crypton-x509-validation and crypton-x509 do not enforce X.509 Name Constraints The crypton-x509-validation and crypton-x509 libraries did not enforce the X.509 Name Constraints extension during certificate validation. The Name Constraints extension is a critical X.509 extension that restricts the...

PT-2026-46040

Name of the Vulnerable Software and Affected Versions crypton-x509-validation versions prior to 1.9.1 crypton-x509 versions prior to 1.9.1 x509 affected versions not specified x509-validation affected versions not specified Description The crypton-x509-validation and crypton-x509 libraries fail t...

CVE-2026-27145 Inefficient candidate hostname parsing in crypto/x509

x509.Certificate.VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name SAN entries. This caused strings.Splithost, "." to execute repeatedly on the same input hostname. With a large DNS SAN list, verification costs scaled quadratically based on the number...

ANT-2026-2FETJP49 · randombit/botan · Improper Certificate Validation

improper-cert-validation high CVE-2026-34580 GHSA-v782-6fq4-q827 Severity Claude high · Security research firm - · Maintainer - REPORT Anthropic's analysis of this finding, sealed at approval. ANT-2026-2FETJP49: security certificateknown: Complete x509 bypass CertificateStore::certificateknown...

Important: Red Hat Security Advisory: Red Hat Lightspeed (formerly Insights) for Runtimes security update

An update is now available for Red Hat Lightspeed formerly Insights for Runtimes on RHEL 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

crypto/tls: crypto/tls: Incorrect certificate validation during TLS session resumption

A flaw was found in the crypto/tls component. This vulnerability occurs during Transport Layer Security TLS session resumption when certificate authority CA settings are modified between the initial and resumed handshakes. An attacker could exploit this to bypass certificate validation, allowing ...

Security Bulletin: IBM Engineering Systems Design Rhapsody TestConductor was affected by CVE-2012-5783, CVE-2012-6153

Summary IBM Engineering Systems Design Rhapsody TestConductor was vulnerable to man-in-the-middle attacks caused by not verifying that the server hostname matches a domain name in the subject's Common Name CN or subjectAltName field of the X.509 certificate. This allows man-in-the-middle attacker...

Important: Red Hat Security Advisory: java-21-ibm-semeru-certified-jdk security update

An update for java-21-ibm-semeru-certified-jdk is now available for Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 10, and Red Hat Enterprise Linux 10.2 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Importan...

EUVD-2024-54938

Improper Validation of Certificate with Host Mismatch vulnerability in Akınsoft QR Menü allows HTTP Response Splitting. This issue affects QR Menü: from s1.05.05 before v1.05.12...

crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation

A flaw was found in Go's crypto/x509 package. A remote attacker could exploit this by presenting a specially crafted certificate chain containing a large number of policy mappings. This inefficient validation process consumes excessive resources, which can lead to a denial of service DoS for...

Apache Airflow has no certificate validation on SMTP STARTTLS connections

Apache Airflow's EmailOperator and the underlying airflow.utils.email helpers established SMTP STARTTLS connections without verifying the remote certificate when the deployment used email smtpstarttls=True without email smtpssl. An attacker positioned between the worker and the configured SMTP...

GHSA-799X-QP47-8QWQ Apache Airflow has no certificate validation on SMTP STARTTLS connections

Apache Airflow's EmailOperator and the underlying airflow.utils.email helpers established SMTP STARTTLS connections without verifying the remote certificate when the deployment used email smtpstarttls=True without email smtpssl. An attacker positioned between the worker and the configured SMTP...

Improper Certificate Validation

Overview apache-airflow-providers-smtp is a Provider for Apache Airflow. Implements apache-airflow-providers-smtp package Affected versions of this package are vulnerable to Improper Certificate Validation in the airflow.utils.email process. An attacker can intercept sensitive information, such a...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation in the airflow.utils.email process. An attacker can intercept sensitive information, such as SMTP authentication credentials and email contents, by performing a man-in-the-middle attack during the STARTTL...

Apache Directory LDAP API lacks server certificate verification for LDAP hostnames

It was identified that the LDAP client implementation in version 2.1.7 does not verify if the server certificate matches the intended LDAP hostname. While the underlying code validates the certificate chain against a trusted authority, the absence of endpoint identification allows a valid...

Improper Validation of Certificate with Host Mismatch

Overview org.apache.directory.api:api-ldap-client-api is a LDAP Client API. Affected versions of this package are vulnerable to Improper Validation of Certificate with Host Mismatch in the TLS server identity verification. An attacker can intercept and impersonate the server by presenting a...

CVE-2026-49267 Apache Airflow: No certificate validation on SMTP STARTTLS connections

Apache Airflow's EmailOperator and the underlying airflow.utils.email helpers established SMTP STARTTLS connections without verifying the remote certificate when the deployment used email smtpstarttls=True without email smtpssl. An attacker positioned between the worker and the configured SMTP...

EUVD-2026-33594

Apache Airflow's EmailOperator and the underlying airflow.utils.email helpers established SMTP STARTTLS connections without verifying the remote certificate when the deployment used email smtpstarttls=True without email smtpssl. An attacker positioned between the worker and the configured SMTP...

CVE-2026-49267

Apache Airflow 's EmailOperator and airflow.utils.email helpers are vulnerable to a network MITM attack because they establish SMTP STARTTLS connections without verifying the remote certificate. This occurs when smtp_starttls=True is used without smtp_ssl. An attacker positioned between the worke...