CVE-2026-107928

A flaw was found in curl. When curl is built with the GnuTLS library, a blocked transmission during communication with a malicious WebSocket server can trigger an out-of-bounds memory read. A malicious server can exploit this flaw to expose sensitive data from neighboring memory buffers or crash...

Important: gnutls

Issue Overview: A hostname verification bypass in GnuTLS v3.8.13 allows attackers to circumvent the Common Name fallback mechanism and eavesdrop on communications via a crafted certificate. CVE-2026-88647 Affected Packages: gnutls Issue Correction: Run dnf update gnutls --releasever...

Amazon Linux 2023 : gnutls, gnutls-c++, gnutls-dane (ALAS2023-2026-3238)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-3238 advisory. A hostname verification bypass in GnuTLS v3.8.13 allows attackers to circumvent the Common Name fallback mechanism and eavesdrop on communications via a crafted certificate. CVE-2026-88647 Tenable has...

Astra Linux – Vulnerability in gnutls28

A flaw was discovered in GnuTLS, which relies on libtasn1 for ASN.1 data processing. Due to an inefficient algorithm in libtasn1, decoding certain DER-encoded certificate data can take excessive time, leading to increased resource consumption. This flaw allows a remote attacker to send a speciall...

Astra Linux – Vulnerability in gnutls28

A flaw was discovered 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 ba...

Astra Linux – Vulnerability in gnutls28

A flaw was discovered in gnutls. When validating certificates, an excessively large Subject Alternative Name SAN could cause the validation process to incorrectly revert to checking the Common Name CN field. This could allow a remote attacker to bypass proper certificate validation, potentially...

Astra Linux – Vulnerability in gnutls28

A flaw was discovered in GnuTLS. The gnutlspkcs11tokensetpin function, which is used to change the Security Officer PIN, can lead to a use-after-free vulnerability. This occurs when an attacker attempts to change the PIN with a NULL old PIN for a token that lacks a protected authentication path...

CVE-2026-88648

Incomplete X.509 implementation in GnuTLS v3.8.13 allows attackers controlling a subordinate Certificate Authority to bypass cross-domain PKI restrictions and issue unauthorized certificates...

UBUNTU-CVE-2026-88648

Incomplete X.509 implementation in GnuTLS v3.8.13 allows attackers controlling a subordinate Certificate Authority to bypass cross-domain PKI restrictions and issue unauthorized certificates...

UBUNTU-CVE-2026-109832

A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. In the VNC TLS I/O handlers, retryable GnuTLS results GNUTLSEAGAIN and GNUTLSEINTERRUPTED are handled with an unbounded busy loop instead of yielding to the event loop. A remote attacker who can reach an enabled VNC...

curl: curl: info leak uploading over WebSockets with GnuTLS

A flaw was found in curl. When curl is built with the GnuTLS library, a blocked transmission during communication with a malicious WebSocket server can trigger an out-of-bounds memory read. A malicious server can exploit this flaw to expose sensitive data from neighboring memory buffers or crash...

CURL-CVE-2026-107928 info leak uploading over WebSockets with GnuTLS

When curl is built with GnuTLS, a malicious WebSocket server can make curl send memory past its send buffer. This is due to an out of bounds read following when gnutlsrecordsend returns a number of bytes sent greater than the number of bytes it was given to send. GnuTLS does that after a blocked...

info leak uploading over WebSockets with GnuTLS

When curl is built with GnuTLS, a malicious WebSocket server can make curl send memory past its send buffer. This is due to an out of bounds read following when gnutlsrecordsend returns a number of bytes sent greater than the number of bytes it was given to send. GnuTLS does that after a blocked...

CVE-2026-107928

When curl is built with GnuTLS, a malicious WebSocket server can make curl send memory past its send buffer. This is due to an out of bounds read following when gnutlsrecordsend returns a number of bytes sent greater than the number of bytes it was given to send. GnuTLS does that after a blocked...

UBUNTU-CVE-2026-107928

When curl is built with GnuTLS, a malicious WebSocket server can make curl send memory past its send buffer. This is due to an out of bounds read following when gnutlsrecordsend returns a number of bytes sent greater than the number of bytes it was given to send. GnuTLS does that after a blocked...

Multiple TLS Libraries can Bypass Delegation Enforcement

Overview This note covers thirteen library-specific records VU948176.6, .8–.19 of how widely used TLS libraries apply X.509 Name Constraints. The records describe cases where a constrained name may be accepted by one library and rejected by another. Some are fixed, some remain under review, and...

PT-2026-113731

Name of the Vulnerable Software and Affected Versions curl affected versions not specified Description When built with GnuTLS, a malicious WebSocket server can cause curl to send memory beyond its send buffer. This occurs because of an out-of-bounds read that happens when the gnutls record send...

CVE-2026-109832

A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. In the VNC TLS I/O handlers, retryable GnuTLS results GNUTLSEAGAIN and GNUTLSEINTERRUPTED are handled with an unbounded busy loop instead of yielding to the event loop. A remote attacker who can reach an enabled VNC...

GnuTLS check_for_unknown_exts MITM DoS

The vulnerability of the checkforunknownexts function in the GnuTLS cryptographic library is related to errors in the certificate validation process. Exploiting this vulnerability could allow a malicious actor to perform a MITM attack or cause service denial...

CentOS Linux 7 [TuxCare] Security Update: gnutls / gnutls-c++ / gnutls-dane / gnutls-devel / gnutls-utils (CENTOS7:CLSA-2026:1791496727)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2026:1791496727 advisory. - A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate...