MGASA-2026-0273 Updated libssh2 packages fix security vulnerabilities

The updated packages fix security vulnerabilities: Heap Buffer Over-read via sftpsymlink in sftp.c. CVE-2025-15661 libssh2 userauth.c userauthpassword integer overflow. CVE-2026-7598 Pre-Authentication DoS via SSHMSGEXTINFO Handler. CVE-2026-55199 Out-of-Bounds Write via Unchecked packetlength in...

gnutls: gnutls: Information disclosure via heap overread in RSA key exchange

A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information disclosure...

OESA-2026-3016 libssh2 security update

libssh2 is a library implementing the SSH2 protocol as defined by Internet Drafts: SECSH-TRANS22, SECSH-USERAUTH25, SECSH-CONNECTION23, SECSH-ARCH20, SECSH-FILEXFER06, SECSH-DHGEX04, and SECSH-NUMBERS10. Security Fixes: libssh2 through 1.11.1, fixed in commit 2dae302, contains an out-of-bounds he...

OESA-2026-3015 libssh2 security update

libssh2 is a library implementing the SSH2 protocol as defined by Internet Drafts: SECSH-TRANS22, SECSH-USERAUTH25, SECSH-CONNECTION23, SECSH-ARCH20, SECSH-FILEXFER06, SECSH-DHGEX04, and SECSH-NUMBERS10. Security Fixes: libssh2 through 1.11.1, fixed in commit 2dae302, contains an out-of-bounds he...

OESA-2026-3014 libssh2 security update

libssh2 is a library implementing the SSH2 protocol as defined by Internet Drafts: SECSH-TRANS22, SECSH-USERAUTH25, SECSH-CONNECTION23, SECSH-ARCH20, SECSH-FILEXFER06, SECSH-DHGEX04, and SECSH-NUMBERS10. Security Fixes: libssh2 through 1.11.1, fixed in commit 2dae302, contains an out-of-bounds he...

Amazon Linux 2023 : nginx, nginx-all-modules, nginx-core (ALAS2023-2026-1922)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1922 advisory. NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpproxyv2module and ngxhttpgrpcmodule modules. This vulnerability exists when the proxyhttpversion to 2 or grpcpass directives...

CVE-2026-60065

When NGINX Plus is configured to use the Message Queuing Telemetry Transport MQTT filter module ngxstreammqttfiltermodule, unauthenticated attackers can send requests with conditions beyond the attacker's control to cause a heap buffer over-read in the NGINX worker process, leading to a restart...

CVE-2026-56434

NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpssimodule module. This vulnerability may exist when the Server-Side Includes SSI, proxypass, and proxybuffering off directives are configured. With this configuration, an unauthenticated attacker with man-in-the-middle MITM abili...

CVE-2026-56434 NGINX ngx_http_ssi_module vulnerability

NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpssimodule module. This vulnerability may exist when the Server-Side Includes SSI, proxypass, and proxybuffering off directives are configured. With this configuration, an unauthenticated attacker with man-in-the-middle MITM abili...

CVE-2026-60065 NGINX Plus ngx_stream_mqtt_filter_module vulnerability

When NGINX Plus is configured to use the Message Queuing Telemetry Transport MQTT filter module ngxstreammqttfiltermodule, unauthenticated attackers can send requests with conditions beyond the attacker's control to cause a heap buffer over-read in the NGINX worker process, leading to a restart...

CVE-2026-60065

CVE-2026-60065 affects NGINX Plus when the MQTT filter module (ngx_stream_mqtt_filter_module) is enabled. Unauthenticated attackers can send crafted requests to trigger a heap buffer over-read in an NGINX worker process, potentially causing a restart. Impact is limited to data-plane availability ...

CVE-2026-56434

NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpssimodule module. This vulnerability may exist when the Server-Side Includes SSI, proxypass, and proxybuffering off directives are configured. With this configuration, an unauthenticated attacker with man-in-the-middle MITM abili...

CVE-2026-56434 NGINX ngx_http_ssi_module vulnerability

NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpssimodule module. This vulnerability may exist when the Server-Side Includes SSI, proxypass, and proxybuffering off directives are configured. With this configuration, an unauthenticated attacker with man-in-the-middle MITM abili...

CVE-2026-56434

Summary: CVE-2026-56434 affects the nginx ngx_http_ssi_module in NGINX Plus and NGINX Open Source when SSI, proxy_pass, and proxy_buffering are configured off. An unauthenticated attacker with MITM control over upstream responses can trigger a heap buffer over-read in the nginx worker process, po...

K000162101: NGINX Plus ngx_stream_mqtt_filter_module vulnerability CVE-2026-60065

Security Advisory Description When NGINX Plus is configured to use the Message Queuing Telemetry Transport MQTT filter module ngxstreammqttfiltermodule, unauthenticated attackers can send requests with conditions beyond the attacker's control to cause a heap buffer over-read in the NGINX worker...

K000162098: NGINX ngx_http_ssi_module vulnerability CVE-2026-56434

Security Advisory Description NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpssimodule module. This vulnerability may exist when the Server-Side Includes SSI, proxypass , and proxybuffering off directives are configured. With this configuration, an unauthenticated attacker wi...

PT-2026-60184

Name of the Vulnerable Software and Affected Versions NGINX Plus affected versions not specified NGINX Open Source affected versions not specified Description A use-after-free issue exists in the ngx http ssi module module. This occurs when Server-Side Includes SSI, proxy pass, and proxy bufferin...

Security Bulletin: IBM i is Affected By Multiple Vulnerabilities in OpenSSL

Summary OpenSSL for IBM i is vulnerable to out-of-bounds read when parsing a crafted DER-encoded ASN.1 structure with a 2 gigabyte primitive element or when using Cryptographic Message Services CMS password-based decryption and processing a stream-mode KEK cipher CVE-2026-34180, CVE-2026-9076,...

JLSEC-2026-744 Heap buffer overread in `wc_PKCS7_DecodeEnvelopedData` when parsing crafted PKCS7 EnvelopedData

Heap buffer overread in wcPKCS7DecodeEnvelopedData when parsing crafted PKCS7 EnvelopedData. This could theoretically be triggered by attacker-supplied data delivered via S/MIME or CMS...

JLSEC-2026-678 In wolfSSL prior to 5.6.6, if callback functions are enabled (via the `WOLFSSL_CALLBACKS` flag),...

In wolfSSL prior to 5.6.6, if callback functions are enabled via the WOLFSSLCALLBACKS flag, then a malicious TLS client or network attacker can trigger a buffer over-read on the heap of 5 bytes WOLFSSLCALLBACKS is only intended for debugging...