CVE-2026-32241
HighSummary
Flannel, sieć dla kontenerów w Kubernetes, ma w wersjach przed 0.28.2 podatność na wstrzykiwanie poleceń w eksperymentalnym backendzie Extension. Atakujący mogą uzyskać dostęp do wykonania dowolnych poleceń na każdym węźle flannel w klastrze, jeśli mogą ustawić adnotacje węzła Kubernetes.
Risk Assessment
Organizacje korzystające z Flannel w wersjach przed 0.28.2 narażają się na poważne ryzyko, ponieważ atakujący mogą uzyskać dostęp do systemu na poziomie root na wszystkich węzłach flannel w klastrze.
Recommendation
Zaleca się aktualizację Flannel do wersji v0.28.2 lub użycie innego backendu, takiego jak vxlan lub wireguard, aby zminimalizować ryzyko.
Related vulnerabilities
- CVE-2026-90898Critical
Bifrost registers MCP clients through its management API, where a stdio client is a command plus args that is started immediately upon client addition, with no MCP handshake required. Authentication is disabled by default (governance.auth_config.is_enabled=false), meaning every caller is treated as a local admin. A single unauthenticated POST /api/mcp/client is enough to run a program as the Bifrost process user (appuser on the official image).
- CVE-2026-90703Critical
A vulnerability has been found in D-Link DWR-M921 1.1.52 in the system function of the file /boafrm/formDiskCreateShare. Manipulation of the folderpath argument leads to OS command injection. The attack can be launched remotely, and the exploit has been publicly disclosed and may be used.
- CVE-2026-90702Critical
A flaw has been found in D-Link DWR-M921 1.1.52 in the system function of the file /boafrm/formDiskFormat. Manipulation of the partition argument causes OS command injection. The attack may be initiated remotely, and the exploit has been published and may be used.
- CVE-2026-90699Critical
A weakness has been identified in D-Link DWR-M920 1.1.7 affecting the sub_41E60C function of the file /boafrm/formPinManageSetup. Manipulation of the newPin argument causes OS command injection. The attack can be initiated remotely, and the exploit has been made available to the public and could be used for attacks.
- CVE-2026-90693Critical
A flaw has been found in D-Link DIR-878 120B05 impacting the SetWan3Settings function of the WAN Settings component. Manipulation of the Primary/Secondary argument causes a stack-based buffer overflow. Remote exploitation of the attack is possible.
- CVE-2026-90692Critical
A vulnerability was detected in D-Link DIR-878 120B05 affecting the SetDynamicDNSIPv6Settings function of the Dynamic DNS IPv6 Settings component. Manipulation of the IPv6Address/Hostname argument results in a stack-based buffer overflow. The attack may be launched remotely.
- CVE-2026-85192Critical
The Joomla Conditional Content extension (regularlabs.com) in versions < 8.0.0 allows authenticated, privileged remote code execution. Conditional Content Pro accepts inline PHP Condition Rules in article syntax, and in affected versions the PHP is passed to the Conditions evaluator without checking who authored the article. Joomla's normal Author text filter preserves the syntax, so publishing the article causes the code to run as the web-server process.
- CVE-2026-82787Critical
A missing authentication for critical function vulnerability exists in CPSL-08P1EN. If this vulnerability is exploited, an affected product may be operated by a remote attacker without authentication.
- CVE-2026-90680Critical
A stack-based buffer overflow vulnerability was discovered in D-Link DIR-823G version 1.0.2B05_20181207, in the strcpy function of /HNAP1/SetStaticRouteSettings (HNAP1 component). Manipulating the PAddress/SubnetMask/Gateway arguments triggers the overflow. The attack can be launched remotely.
- CVE-2026-90608Critical
A buffer overflow vulnerability was found in Totolink A3002MU version Hh-B20211125.1046, in the formPortFw function of /boafrm/formPortFw (boa component). Manipulating the service_type argument causes the overflow. The attack can be initiated remotely and the exploit has been published.
Original NVD description (English source)
Flannel is a network fabric for containers, designed for Kubernetes. The Flannel project includes an experimental Extension backend that allows users to easily prototype new backend types. In versions of Flannel prior to 0.28.2, this Extension backend is vulnerable to a command injection that allows an attacker who can set Kubernetes Node annotations to achieve root-level arbitrary command execution on every flannel node in the cluster. The Extension backend's SubnetAddCommand and SubnetRemoveCommand receive attacker-controlled data via stdin (from the `flannel.alpha.coreos.com/backend-data` Node annotation). The content of this annotation is unmarshalled and piped directly to a shell command without checks. Kubernetes clusters using Flannel with the Extension backend are affected by this vulnerability. Other backends such as vxlan and wireguard are unaffected. The vulnerability is fixed in version v0.28.2. As a workaround, use Flannel with another backend such as vxlan or wireguard.