CentOS Linux 6 [TuxCare] Security Update: nginx / nginx-all-modules / nginx-filesystem / nginx-mod-http-geoip / etc (CENTOS6:CLSA-2026:1784804810)

The CentOS Linux 6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS6:CLSA-2026:1784804810 advisory. - A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and a string expression references the map'...

CentOS Linux 8.4 [TuxCare] Security Update: nginx / nginx-all-modules / nginx-filesystem / etc (CENTOS8.4:CLSA-2026:1784800112)

The CentOS Linux 8.4 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS8.4:CLSA-2026:1784800112 advisory. - A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and a string expression references the...

Rocky Linux 9.6 [TuxCare] Security Update: mysql / mysql-common / mysql-devel / mysql-errmsg / mysql-libs / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1781015758)

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1781015758 advisory. - Vulnerability in the MySQL Server product of Oracle MySQL component: Server: Optimizer. Supported versions that are affected are...

EUVD-2026-80315

fastify vulnerable to Denial of Service via unhandled exception on HTTP/2 trailer responses...

Tornado: Unbounded query-string argument count allows event-loop-stalling DoS

Summary HTTPServerRequest.init in tornado/httputil.py parses the URL query string via parseqsbytes with no field-count limit — while the sibling POST-body parsing path parsebodyarguments received a maxnumfields=1000 cap added earlier in this exact same release v6.5.8, commit 8d6363ed, explicitly ...

GHSA-3HV7-MJH2-FV65 Tornado: Unbounded query-string argument count allows event-loop-stalling DoS

Summary HTTPServerRequest.init in tornado/httputil.py parses the URL query string via parseqsbytes with no field-count limit — while the sibling POST-body parsing path parsebodyarguments received a maxnumfields=1000 cap added earlier in this exact same release v6.5.8, commit 8d6363ed, explicitly ...

EUVD-2026-89203

pageant: Out-of-bounds read / oversized allocation in pageant MemoryMap::read via a malicious Pageant agent Windows...

brace-expansion: brace-expansion: Denial of Service via stack exhaustion from crafted brace patterns

A flaw was found in brace-expansion. A remote attacker can provide specially crafted brace patterns with excessive nested groups or large arrays to trigger uncontrolled recursion during parsing. This behavior exhausts the native call stack and crashes the application process, leading to a Denial ...

GHSA-35G8-35P8-C8FW Russh: Unbounded memory exhaustion via CHANNEL_OPEN flood during a client-stalled rekey

Summary A russh server can be driven to unbounded heap growth process OOM / kill by a peer that speaks only standard SSH messages, in the default configuration. The peer starts a key re-exchange sends SSHMSGKEXINIT but never sends the follow-up SSHMSGKEXECDHINIT, leaving the server's kex state...

Russh: Unbounded memory exhaustion via CHANNEL_OPEN flood during a client-stalled rekey

Summary A russh server can be driven to unbounded heap growth process OOM / kill by a peer that speaks only standard SSH messages, in the default configuration. The peer starts a key re-exchange sends SSHMSGKEXINIT but never sends the follow-up SSHMSGKEXECDHINIT, leaving the server's kex state...

EUVD-2026-89204

Russh: Unbounded memory exhaustion via CHANNELOPEN flood during a client-stalled rekey...

brace-expansion: brace-expansion: Denial of Service via crafted brace patterns

A flaw was found in brace-expansion. A remote attacker can cause a Denial of Service DoS by supplying specially crafted string patterns with repeated closing braces. Processing these malformed patterns causes the string expansion logic to repeatedly rescan the entire input, leading to excessive...

openssl: openssl: Denial of Service via out-of-bounds write during TLS context switch

A flaw was found in openssl. When a server replaces its security context during an active Transport Layer Security TLS handshake, it fails to update the internal capacity tracking for cryptographic signature algorithms. A remote peer can exploit this issue by advertising specific signature...

openssl: OpenSSL: Denial of Service via unenforced QUIC connection flow control

A flaw was found in OpenSSL. A remote attacker can cause a Denial of Service DoS due to missing connection-level flow control enforcement in the QUIC protocol implementation. By opening multiple streams that respect individual stream limits while preventing data consumption, the attacker can forc...

openssl: OpenSSL: Denial of Service via undersized DTLS record

A flaw was found in OpenSSL. A remote, unauthenticated attacker can cause a Denial of Service DoS by terminating an active Datagram Transport Layer Security DTLS session. By sending an undersized network packet that is shorter than the expected cryptographic overhead, the record processing layer...

brace-expansion: brace-expansion: Denial of Service via crafted brace patterns

A flaw was found in brace-expansion. A remote attacker can cause a Denial of Service DoS by supplying specially crafted string patterns with repeated closing braces. Processing these malformed patterns causes the string expansion logic to repeatedly rescan the entire input, leading to excessive...

brace-expansion: brace-expansion: Denial of Service via uncontrolled recursion in nested brace patterns

A flaw was found in brace-expansion. A remote attacker can cause a Denial of Service DoS by supplying untrusted input containing deeply nested brace patterns. Due to uncontrolled recursion during pattern processing, expanding these nested structures exhausts the call stack and causes the...

Astro: Malformed port in the Host header can crash the Node adapter

Summary In the Astro Node adapter, a request whose Host header contains a malformed port for example example.com:65536 or example.com:8080:8080 produced an invalid request URL. The fallback intended to recover from an unparseable URL reused the same malformed host, so it failed again and raised a...

GHSA-QH8J-HQJV-7M4X Astro: Malformed port in the Host header can crash the Node adapter

Summary In the Astro Node adapter, a request whose Host header contains a malformed port for example example.com:65536 or example.com:8080:8080 produced an invalid request URL. The fallback intended to recover from an unparseable URL reused the same malformed host, so it failed again and raised a...

GHSA-G5VV-9GXW-82HX GitPython: Denial of Service via catastrophic backtracking (ReDoS) in Actor.name_email_regex — commit author/committer field parsing

Summary GitPython's Actor.nameemailregex regular expression git/util.py, line 863 is vulnerable to catastrophic backtracking ReDoS — Regular Expression Denial of Service. When GitPython parses the author or committer header of a git commit object that contains a long string with an unterminated ,...