CVE-2026-39961

CVE-2026-39961 (Aiven Operator) affects Aiven Operator versions 0.31.0–0.36.x. A developer with create permission on ClickhouseUser CRDs in their own namespace can exfiltrate secrets from any namespace. The operator reads the victim’s secret using its ClusterRole (aiven-operator-role) and writes ...

CVE-2026-39961 Aiven Operator has cross-namespace secret exfiltration via ClickhouseUser connInfoSecretSource

Aiven Operator allows you to provision and manage Aiven Services from your Kubernetes cluster. From 0.31.0 to before 0.37.0, a developer with create permission on ClickhouseUser CRDs in their own namespace can exfiltrate secrets from any other namespace — production database credentials, API keys...

EUVD-2026-20880

Mattermost Plugins versions =2.3.1 fail to limit the request body size on the /lifecycle webhook endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service via sending an oversized JSON payload. Mattermost Advisory ID: MMSA-2026-00610...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the /changes webhook endpoint. An attacker can exhaust system memory by sending an oversized JSON payload. Remediation Upgrade github.com/mattermost/mattermost-plugin-msteams/serv...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the /lifecycle webhook endpoint. An attacker can exhaust system memory and disrupt service availability by sending an oversized JSON payload. Remediation Upgrade...

EUVD-2026-20882

Mattermost Plugins versions =2.1.3.0 fail to limit the request body size on the /changes webhook endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service via sending an oversized JSON payload. Mattermost Advisory ID: MMSA-2026-00611...

Mattermost MS Teams plugin doesn't limit the request body size on the /changes webhook endpoint

Mattermost Plugins versions =2.1.3.0 fail to limit the request body size on the /changes webhook endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service via sending an oversized JSON payload. Mattermost Advisory ID: MMSA-2026-00611...

Mattermost MS Teams plugin doesn't limit the request body size on the /lifecycle webhook endpoint

Mattermost Plugins versions =2.3.1 fail to limit the request body size on the /lifecycle webhook endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service via sending an oversized JSON payload. Mattermost Advisory ID: MMSA-2026-00610...

CVE-2026-24661

Mattermost Plugins versions =2.1.3.0 fail to limit the request body size on the /changes webhook endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service via sending an oversized JSON payload. Mattermost Advisory ID: MMSA-2026-00611...

CVE-2026-21388

Mattermost Plugins versions =2.3.1 fail to limit the request body size on the /lifecycle webhook endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service via sending an oversized JSON payload. Mattermost Advisory ID: MMSA-2026-00610...

CVE-2026-24661 Unbounded Request Body Read in MS Teams Plugin {{/changes}} Webhook Endpoint

Mattermost Plugins versions =2.1.3.0 fail to limit the request body size on the /changes webhook endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service via sending an oversized JSON payload. Mattermost Advisory ID: MMSA-2026-00611...

CVE-2026-24661

Mattermost Plugins

CVE-2026-24661 Unbounded Request Body Read in MS Teams Plugin {{/changes}} Webhook Endpoint

Mattermost Plugins versions =2.1.3.0 fail to limit the request body size on the /changes webhook endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service via sending an oversized JSON payload. Mattermost Advisory ID: MMSA-2026-00611...

CVE-2026-21388

Mattermost Plugins versions =2.3.1 fail to limit the request body size on the /lifecycle webhook endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service via sending an oversized JSON payload. Mattermost Advisory ID: MMSA-2026-00610...

CVE-2026-21388 Unbounded Request Body Read in MS Teams Plugin {{/lifecycle}} Webhook Endpoint

Mattermost Plugins versions =2.3.1 fail to limit the request body size on the /lifecycle webhook endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service via sending an oversized JSON payload. Mattermost Advisory ID: MMSA-2026-00610...

CVE-2026-21388 Unbounded Request Body Read in MS Teams Plugin {{/lifecycle}} Webhook Endpoint

Mattermost Plugins versions =2.3.1 fail to limit the request body size on the /lifecycle webhook endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service via sending an oversized JSON payload. Mattermost Advisory ID: MMSA-2026-00610...

CLEANSTART-2026-BY59711 gRPC-Go is the Go language implementation of gRPC

Multiple security vulnerabilities affect the cert-manager-webhook-pdns-fips package. gRPC-Go is the Go language implementation of gRPC. See references for individual vulnerability details...

CVE-2026-35635: Use of Incorrectly-Resolved Name or Reference

OpenClaw before 2026.3.22 contains a webhook path route replacement vulnerability in the Synology Chat extension that allows attackers to collapse multi-account configurations onto shared webhook paths. Attackers can exploit inherited or duplicate webhook paths to bypass per-account DM access...

PT-2026-31659

Name of the Vulnerable Software and Affected Versions Aiven Operator versions 0.31.0 through 0.36.9 Description Aiven Operator allows provisioning and management of Aiven Services from a Kubernetes cluster. A developer with create permission on ClickhouseUser Custom Resource Definitions CRDs in...

CVE-2026-35640: Incorrect Behavior Order

OpenClaw before 2026.3.25 parses JSON request bodies before validating webhook signatures, allowing unauthenticated attackers to force resource-intensive parsing operations. Remote attackers can send malicious webhook requests to trigger denial of service by exhausting server resources through...