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CVE-2026-93628

Zimbra Collaboration Suite Calendar Processing Authentication Bypass via Forged iCalendar REPLY Attendee Response

An attendee authentication vulnerability in the email calendar processing of Zimbra Collaboration Suite (ZCS) allows an unauthenticated sender to forge another attendee's response to an existing meeting. Zimbra passes a null sender identity when processing iCalendar REPLY components, causing the attendee authorization filter to be skipped. An attacker who knows the meeting UID, organizer address and attendee address can send a non-outdated reply that changes the attendee's participation status in the organizer's calendar. The change occurs automatically during delivery without organizer or attendee interaction. ZCS 10.1.16 and 10.1.21 are affected.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Zimbra
Products
Zimbra Collaboration Suite
CVE-2026-93627

Zimbra Collaboration Suite Calendar Processing Authentication Bypass via Forged iCalendar CANCEL/REQUEST Organizer

An organizer authentication vulnerability in the email calendar processing of Zimbra Collaboration Suite (ZCS) allows an unauthenticated sender to cancel or modify an existing meeting in a recipient's calendar. Zimbra accepts iCalendar CANCEL and REQUEST components without verifying that the email sender is authorized to act as the supplied organizer. An attacker who knows the meeting UID and organizer address can supply a non-outdated sequence number to move the recipient's meeting to Trash or replace its details. Processing occurs automatically during email delivery without recipient interaction. ZCS 10.1.16 and 10.1.21 are affected.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Zimbra
Products
Zimbra Collaboration Suite
CVE-2025-30052

Authentication Bypass via IP Spoofing in CGM CLININET rsyncd

The rsyncd service of the CGM CLININET is vulnerable to Authentication Bypass via IP spoofing. Access is granted based solely on the client's source IP address. An attacker able to spoof an allowed IP address, can bypass this check and gain the ability to edit files on the affected system.  The vulnerability was confirmed to affect versions up to 2026.MS3 but later versions may also be vulnerable.

CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Cgm
Products
Cgm Clininet
CVE-2026-114640

Traefik v3.7.0 before v3.7.14 mTLS Header Spoofing via Ingress-NGINX HTTP Router

Traefik from v3.7.0 before v3.7.14 contains an authentication bypass vulnerability in its Kubernetes Ingress-NGINX provider that forwards client-supplied Ssl-Client-* headers on the plaintext HTTP router. When ssl-redirect is disabled alongside auth-tls-pass-certificate-to-upstream, unauthenticated attackers can send Ssl-Client-Verify: SUCCESS with a chosen certificate subject and issuer to impersonate mTLS identities.

CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed
Vendors
Traefik
Products
Traefik
CVE-2026-106460

Backstage: Explicit negative email verification can be ignored during shared OAuth profile normalization

Backstage is an open framework for building developer portals. From 0.3.0 until 0.6.15 and 0.7.5, the @backstage/plugin-auth-node package did not consistently honor explicit negative email verification during shared OAuth profile normalization. The affected paths include a selected profile email marked verified: false, a matching raw provider email marked email_verified: false, and an email obtained only from an ID token marked email_verified: false. Exploitation requires an admitted identity-provider user who can supply or change an unverified email and a deployment that uses the selected profile email to resolve catalog identities. The verification metadata must apply to the selected email; an absent email_verified claim alone is not affected. In an affected configuration, the user may assume another catalog identity and obtain its associated access and permissions. This issue is fixed in versions 0.6.15 and 0.7.5.

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Vendors
Backstage Linuxfoundation
Products
Backstage Plugin-auth-node Backstage and 1 more
CVE-2026-24000

Fleet has a rate limiting bypass via untrusted client IP headers

Fleet is open source device management software. Prior to version 4.80.1, Fleet trusted client-supplied IP address headers when determining the source IP for incoming requests. This allowed authenticated and unauthenticated clients to spoof their apparent IP address and bypass per-IP rate limiting controls. Fleet determines a client’s public IP address using HTTP headers such as X-Forwarded-For, X-Real-IP, and/or True-Client-IP. These headers were trusted without validation. An attacker could supply arbitrary values in these headers, causing Fleet to treat each request as originating from a different IP address. This could allow an attacker to bypass per-IP rate limits and increase the effectiveness of brute-force or password-spraying attempts against authentication endpoints. This issue does not allow authentication bypass, privilege escalation, data exposure, or remote code execution on its own. Version 4.80.1 contains a patch. As a workaround, run Fleet behind a trusted reverse proxy or load balancer that overwrites client IP headers.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Vendors
Fleetdm
Products
Fleet
CVE-2026-65570

WordPress Login with phone number plugin <= 1.8.70 - Bypass vulnerability vulnerability

Unauthenticated Bypass Vulnerability in Login with phone number <= 1.8.70 versions.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Vendors
—
Products
—
CVE-2026-94422

xdg-dbus-proxy: message filtering bypass via reply serial allows sandbox escape

An incorrect implementation of message filtering in xdg-dbus-proxy versions before 0.1.9 allows an attacker to bypass the intended message filtering on the D-Bus session bus by setting a reply serial number on non-reply messages. A malicious or compromised Flatpak app could use this to achieve arbitrary code execution outside its sandbox. xdg-dbus-proxy was designed to be part of the sandbox boundary for Flatpak, but it is released as a separate project and is sometimes used by other app frameworks such as Firejail.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Flatpak Redhat
Products
Xdg-dbus-proxy Enterprise Linux
CVE-2026-110768

holaOS through 2026.822.1 Authorization Bypass via Telegram Connector Username Allowlist

holaOS through 2026.822.1 contains an authorization bypass vulnerability in the channel-gateway Telegram connector that authorizes senders by mutable username rather than only numeric id. Attackers who register a released username listed in allowFrom can submit turns to the bound workspace agent, which runs configured tools on the operator's machine.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
Vendors
Holaboss-ai
Products
Holaos
CVE-2026-96333

WordPress GiveWP plugin <= 4.16.8.1 - Payment Bypass vulnerability

Authentication Bypass by Spoofing vulnerability in Liquid Web / StellarWP GiveWP give allows Identity Spoofing.This issue affects GiveWP: from n/a through 4.16.8.1.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Liquid Web / Stellarwp Wordpress-extensions
Products
Givewp Givewp
CVE-2026-72809

SiYuan before v3.7.4 Authentication Bypass via Localhost Trust

SiYuan versions <= v3.7.2 (patched in v3.7.4) contain an authentication bypass vulnerability in the kernel's CheckAuth function, which grants the administrator role (RoleAdministrator) to any request whose RemoteAddr is loopback (127.0.0.1) for a specific set of endpoints (including /api/system/exit, getNetwork, getWorkspaceInfo, /assets/*, and /export/*). These localhost bypasses sit outside the access auth code gate, so they apply even when an access auth code is configured. Because the fixed-port reverse proxy forwards requests to the kernel over loopback without injecting an authentication token and does not configure trusted proxies, a request forwarded through this proxy reaches the kernel with RemoteAddr = 127.0.0.1. If the fixed-port proxy is bound to a network interface, this could allow a remote unauthenticated attacker to obtain admin access on the affected endpoints; however, per the advisory this remote forwarding behavior was established only by code inspection and was not reproduced end-to-end.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
B3log Siyuan
Products
Siyuan Siyuan
CVE-2026-111623

Xiaozhi-esp32-server-java through 6.1.0 Authentication Bypass via OTA Endpoint Token Issuance

Xiaozhi-esp32-server-java through 6.1.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to obtain valid device WebSocket tokens by requesting /api/device/ota with any MAC address. Attackers can open a victim device's WebSocket channel to read private role system prompts, write conversation history, consume LLM/STT/TTS credentials, and overwrite device metadata.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
Vendors
Joey-zhou
Products
Xiaozhi-esp32-server-java
CVE-2026-102946

joserfc: JWS signature verification bypass via empty signatures array in jws.deserialize_json

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. Prior to 1.7.4, joserfc.jws.deserialize_json() accepts a JWS General JSON Serialization with an empty signatures array as authenticated. The verify_general_json() loop performs no iterations for the empty array and returns success because no signature check failed, allowing an attacker without a signing key to supply an arbitrary payload that relying applications may treat as authentic. The issue affects the General JSON Serialization path; compact JWS and JWT decoding, Flattened JSON serialization, and JWE JSON processing do not follow this vulnerable path. This issue is fixed in version 1.7.4.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Authlib
Products
Joserfc
CVE-2026-96615

NGINX Gateway Fabric vulnerability

Description NGINX Gateway Fabric has a vulnerability when it is configured with Gateway Custom Resource Definition (CRD) and have an authenticated gRPC connection with NGINX Agent. A namespaced authenticated attacker with access to a service account may impersonate the authenticated NGINX Agent gRPC connection to read TLS private keys of Gateway deployments in another namespace.  Impact A remote authenticated attacker may be able to read TLS private keys of Gateway deployments in another namespace.  There is no data plane exposure; this is a control plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
F5
Products
Nginx Gateway Fabric
CVE-2026-94197

NGINX Ingress Controller vulnerability

An authentication and authorization bypass vulnerability exists in F5 NGINX Kubernetes Ingress Controller (NIC) when configured with the `ExternalAuth` policy or Ingress external authentication. Client-supplied X-Forwarded-Prefix, X-Forwarded-URI, X-Original-URI, and X-Forwarded-Method routing and method headers are forwarded unsanitized into the internal authentication subrequest (handled by the NGINX auth_request directive). As a result, an unauthenticated, remote attacker may spoof request attributes evaluated by the external authentication provider. Impact: This vulnerability may allow remote attackers unauthenticated access to protected paths. There is no control plane exposure; this is a data plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
F5
Products
Nginx Ingress Controller
CVE-2026-106488

Backstage: Improper authentication in the OIDC provider

Backstage is an open framework for building developer portals. Prior to 0.4.20, the @backstage/plugin-auth-backend-module-oidc-provider package is affected by improper authentication in the oidc provider. Deployments using OIDC email-based identity resolution with a provider that permits unverified email addresses may allow an authenticated provider user to assume another catalog identity. This may grant access and permissions associated with that user. No direct availability impact is demonstrated. This issue is fixed in version 0.4.20.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Vendors
Backstage Linuxfoundation
Products
Backstage Plugin-auth-backend-module-oidc-provider Backstage and 1 more
CVE-2026-112241

WordPress SureCart plugin <= 4.9.5 - Broken Authentication vulnerability

Authentication Bypass by Spoofing vulnerability in Brainstorm Force SureCart surecart allows Authentication Abuse.This issue affects SureCart: from n/a through 4.9.5.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Brainstormforce Wordpress-extensions
Products
Surecart Surecart
CVE-2026-110723

API Gateway Bypass of Rate Limiting via Untrusted X-Forwarded-For Header

In `api-gateway` versions till `1.7.3`, The default rate-limit key resolver, `ClientIpKeyResolver`, derives the per-client bucket key from the leftmost element of the `X-Forwarded-For` request header. That element is supplied by the originating HTTP client and is not validated against any trusted-proxy list. A single attacker can therefore obtain an unlimited number of independent rate-limit buckets — one per unique header value — and completely bypass the gateway's request-rate limiting on every route that uses the shipped default configuration.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Eclipse
Products
Connected Services Platform
CVE-2026-94416

Aap-gateway: aap-gateway: authorization bypass via workload identity token forgery

An authorization bypass was found in the Ansible Automation Platform (AAP) gateway. The gateway API allows an authenticated administrator to create a new service key for the Controller service cluster. Because service-key creation is not restricted to the installer-provisioned provisioning path, an administrator-issued key is cryptographically indistinguishable from a legitimate one and can be used to forge a service-authentication token that impersonates the Controller service. Combined with the gateway OIDC workload-identity endpoint (enabled via FEATURE_OIDC_WORKLOAD_IDENTITY_ENABLED), the attacker can drive the gateway to sign Workload Identity Tokens (WITs) for arbitrary Controller workloads. A downstream resource server such as HashiCorp Vault that trusts the gateway OIDC key will accept the forged WIT and return the AAP credentials bound to that workload, disclosing secrets beyond the attacker's authorization boundary.

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Ansible Automation Platform Ansible Automation Platform Developer Ansible Automation Platform Inside