Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation in the processing of requests to virtual hosts configured with both tls.enableFallbackCertificate and jwtProviders. An attacker can bypass authentication controls by sending requests without a valid token...

GHSA-G3XR-5W5J-W4Q4 Contour has Improper JWT Verification for Non-SNI Requests on Virtual Hosts with Fallback Certificate Enabled

Impact When an HTTPProxy is configured with incompatible combination of both .spec.virtualhost.tls.enableFallbackCertificate: true and .spec.virtualhost.jwtProviders, Contour does not reject the configuration. Consequently, requests from clients that do not send TLS SNI or send an unrecognized SN...

Contour has Improper JWT Verification for Non-SNI Requests on Virtual Hosts with Fallback Certificate Enabled

Impact When an HTTPProxy is configured with incompatible combination of both .spec.virtualhost.tls.enableFallbackCertificate: true and .spec.virtualhost.jwtProviders, Contour does not reject the configuration. Consequently, requests from clients that do not send TLS SNI or send an unrecognized SN...

PT-2026-55460

Name of the Vulnerable Software and Affected Versions Contour versions prior to 1.33.5 Description An issue exists when an HTTPProxy is configured with both .spec.virtualhost.tls.enableFallbackCertificate: true and .spec.virtualhost.jwtProviders. In this scenario, the system fails to reject the...

PT-2026-55390

Impact When an HTTPProxy is configured with incompatible combination of both .spec.virtualhost.tls.enableFallbackCertificate: true and .spec.virtualhost.jwtProviders, Contour does not reject the configuration. Consequently, requests from clients that do not send TLS SNI or send an unrecognized SN...

TencentOS Server 2: sssd (TSSA-2025:1027)

The version of Tencent Linux installed on the remote TencentOS Server 2 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2025:1027 advisory. Package updates are available for TencentOS Server 2 that fix the following vulnerabilities:...

gnutls: gnutls: Certificate validation bypass due to improper handling of URI and SRV SANs

A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted certificate that contains Uniform Resource Identifier URI or Service SRV Subject Alternative Names SANs. This could cause the certificate validation process to incorrectly fall back to...

PYSEC-2026-301 Bugsink is vulnerable to Stored XSS via Pygments fallback in stacktrace rendering

Summary An unauthenticated attacker who can submit events to a Bugsink project can store arbitrary JavaScript in an event. The payload executes only if a user explicitly views the affected Stacktrace in the web UI. Details When Pygments returns more lines than it was given a known upstream quirk...

Bugsink is vulnerable to Stored XSS via Pygments fallback in stacktrace rendering

SummaryAn unauthenticated attacker who can submit events to a Bugsink project can store arbitrary JavaScript in an event.The payload executes only if a user explicitly views the affected Stacktrace in the web UI. Details When Pygments returns more lines than it was given a known upstream quirk th...

Apache Pyfory python is vulnerable to deserialization of untrusted data

Deserialization of untrusted data inpython in pyforyversions 0.12.0 through 0.12.2, or thelegacypyfury versions from0.1.0 through 0.10.3: allows arbitrary code execution. An application is vulnerable if it reads pyfory serialized data from untrusted sources.An attacker can craft a data stream tha...

ip6_vti: set netns_immutable on the fallback device.

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PT-2026-53396

Summary An unauthenticated attacker who can submit events to a Bugsink project can store arbitrary JavaScript in an event. The payload executes only if a user explicitly views the affected Stacktrace in the web UI. Details When Pygments returns more lines than it was given a known upstream quirk...

nono-py's policy JSON accepts unknown security fields

Summary nono-py policy handling could fail open in two ways. First, resolving a policy-derived ProxyConfig did not automatically enforce CapabilitySet.proxyonly, allowing sandboxed children to bypass a resolved domain allowlist by using direct network access. Second, policy JSON accepted unknown...

EUVD-2026-39573

When HAVEENCRYPTTHENMAC is configured, the implementation could fall back to MAC-then-Encrypt rather than enforcing Encrypt-then-MAC...

Oracle Linux 9 : gnutls (ELSA-2026-20612)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-20612 advisory. - Fix CVE-2026-33846 DTLS fragment reassembly, High, heap overwrite - Fix CVE-2026-42009 DTLS fragment reassembly, High, undefined behaviour - Fix...

GO-2026-5610 OpenTelemetry eBPF Instrumentation: CPU-mismatch fallback uses 256-byte buffer with 8KB size in go.opentelemetry.io/obi

OpenTelemetry eBPF Instrumentation: CPU-mismatch fallback uses 256-byte buffer with 8KB size in go.opentelemetry.io/obi...

CVE-2026-11703

Missing SNI/ALPN binding on stateful session-ID resumption, which previously skipped the binding check performed for ticket-based resumption. A cached session could be resumed under a different SNI/ALPN than originally negotiated and, where client-authentication policy differs across virtual host...

CVE-2026-11703 Missing SNI/ALPN binding on stateful (session-ID) TLS session resumption

Missing SNI/ALPN binding on stateful session-ID resumption, which previously skipped the binding check performed for ticket-based resumption. A cached session could be resumed under a different SNI/ALPN than originally negotiated and, where client-authentication policy differs across virtual host...

CVE-2026-6092 Encrypt-then-MAC could fall back to MAC-then-Encrypt when HAVE_ENCRYPT_THEN_MAC is configured

When HAVEENCRYPTTHENMAC is configured, the implementation could fall back to MAC-then-Encrypt rather than enforcing Encrypt-then-MAC...

CVE-2026-6092

CVE-2026-6092 describes a behavioural fallback issue when HAVE_ENCRYPT_THEN_MAC is configured: the implementation could fall back to MAC-then-Encrypt instead of Encrypt-then-MAC. The connected documents reiterate this description across multiple sources (NVD, ENISA EUVD, Debian security tracker, ...