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CVE-2026-58593

NodeBB - ActivityPub Author Spoofing via Unvalidated attributedTo Mapped to Local User

NodeBB does not bind the claimed author of an inbound ActivityPub object to the authenticated remote actor. The inbound middleware verifies the HTTP-signature actor and checks the origin of object.id, but never validates that attributedTo corresponds to the sender. In the object mock, attributedTo is used directly as a uid, and actors.assert silently ignores numeric identifiers (filtering them out without re-deriving the uid), so a federated remote actor can set attributedTo to a bare numeric value such as 1 and have the resulting post or private message created with that local uid as author, including the administrator account. This lets a remote attacker forge posts and direct messages attributed to arbitrary local users. Requires the ActivityPub/federation feature to be enabled.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Nodebb
Products
Nodebb
CVE-2026-24013

Apache IoTDB: Authentication Bypass via Forged SessionID in Thrift RPC

Authentication Bypass by Spoofing vulnerability in Apache IoTDB. Certain Thrift RPC query handlers lack strict validation of the sessionId parameter. An attacker can construct requests with a forged sessionId and, without performing openSession authentication, receive valid query results. This allows authentication bypass and unauthorized reading of time-series data. This issue affects Apache IoTDB: from 1.3.3 before 2.0.8. Users are recommended to upgrade to version 2.0.8, which fixes the issue.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Apache
Products
Iotdb
CVE-2026-13207

Frangoteam FUXA SCADA/HMI Authentication Bypass by Spoofing

FUXA versions 1.3.1 and prior contain an authentication bypass vulnerability via dot-segment path normalization in the REST API. The API router fails to normalize dot-segment sequences before applying authentication middleware, allowing unauthenticated requests to access protected endpoints by prefixing paths with dot-segments such as /api/./users, /api/./roles, and /api/project/../users. These requests bypass authentication checks and return sensitive user and role data without credentials.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Frangoteam
Products
Fuxa Scada/hmi
CVE-2026-58370

Woodpecker < 3.15.0 - GitLab Approval Gate Bypass via Spoofable Commit Author Name

Woodpecker before 3.15.0 matches the ApprovalAllowedUsers bypass list against pipeline.Author. For the GitLab forge driver, pipeline.Author is populated from the git commit author name (commit.author.name) carried in the webhook payload, which is attacker-controlled and not verified by GitLab. A user who can open a merge request from a fork can set the commit author name to match an entry in ApprovalAllowedUsers, causing needsApproval to return false so the pipeline runs without the required approval. This defeats the fork-approval security boundary and allows execution of attacker-controlled pipeline steps on a Woodpecker agent and exfiltration of CI secrets exposed to the run. Other built-in forge drivers (Gitea, Forgejo, GitHub, Bitbucket) derive pipeline.Author from the forge-validated sender/actor identity and are not affected.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
Vendors
Woodpecker-ci
Products
Woodpecker
CVE-2026-52690

Spoofed answers can mark an authoritative non-EDNS capable

Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Recursor
CVE-2026-54089

File Browser: Authentication Bypass via Proxy Auth Header Forgery

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Starting with 2.0.0-rc.1, when FileBrowser is configured with proxy authentication (auth.method=proxy), any unauthenticated attacker who can reach the server directly can impersonate any user - including admin - by sending a single forged HTTP header. No credentials are required. Additionally, specifying a non-existent username causes the server to automatically create a new user account, providing an account creation primitive with no authorization. This is an already known issue that has been documented in the documentation for several years, but has not been documented as a vulnerability before.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Filebrowser
Products
Filebrowser
CVE-2026-25119

Gogs: Authentication Bypass via Unvalidated Reverse Proxy Headers

Gogs is an open source self-hosted Git service. Prior to 0.14.3, when ENABLE_REVERSE_PROXY_AUTHENTICATION is enabled, Gogs accepts the configured authentication header (default: X-WEBAUTH-USER) directly from client requests without validating that the request originated from a trusted reverse proxy. Any remote attacker who can reach the Gogs service can forge this header to impersonate any user or trigger automatic account creation, completely bypassing authentication. This vulnerability is fixed in 0.14.3.

CVSS 4.0 · 7.7 High EPSS < 1% KEV · Not listed
Vendors
Gogs
Products
Gogs
CVE-2026-54308

n8n: Missing Token Validation on Microsoft Agent 365 Trigger Node

n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, the MicrosoftAgent365Trigger and StripeTrigger node did not validate that inbound requests. As a result, an unauthenticated attacker who knows the webhook URL could submit a forged payload and cause the workflow to execute with attacker-controlled data. This vulnerability is fixed in 2.25.7 and 2.26.2.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
Vendors
N8n
Products
N8n
CVE-2026-47381

NocoDB: Cross-Workspace Integration Use in Connection Test

NocoDB is software for building databases as spreadsheets. Prior to 2026.05.1, a user in one workspace could exercise another workspace's integration through the testConnection endpoint by supplying its ID, because the integration was fetched in a bypass scope and the caller's permission check matched any base in any workspace. This vulnerability is fixed in 2026.05.1.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Vendors
Nocodb
Products
Nocodb
CVE-2026-52845

Caddy: FastCGI header normalization bypass in `forward_auth copy_headers`

Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, forward_auth copy_headers deletes the exact client-supplied identity header before copying the trusted value from the auth gateway. But when the request later goes through php_fastcgi, Caddy normalizes HTTP headers into CGI variables by replacing - with _. This lets a client send an underscore alias that survives the forward_auth delete step but becomes the same PHP/FastCGI variable. Result: a remote client can inject or sometimes override identity/group headers trusted by PHP/FastCGI applications behind Caddy. This vulnerability is fixed in 2.11.4.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Vendors
Caddyserver
Products
Caddy
CVE-2026-34025

IP restriction bypass in Wertheim SafeController Software allows logins from unauthorized network locations

The Wertheim SafeController Software, AssemblyVersion 6.15.8328.28014, contains an IP restriction bypass vulnerability in the login process. The application restricts user logins based on the IP address associated with a branch location, but the client IP address is derived from the HTTP X-Forwarded-For header when that header is present. An attacker with valid branch user credentials can manipulate the X-Forwarded-For header during login to spoof the expected branch IP address and obtain a valid authenticated session from an unauthorized network location.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Wertheim
Products
Safecontroller Software For Vault Rooms (safe Deposit Locker System)
CVE-2026-56357

n8n - Webhook Forgery via Missing HMAC-SHA256 Signature Verification in GitHub Webhook Trigger

n8n before 1.123.15 and 2.5.0 contains a webhook forgery vulnerability in the GitHub Webhook Trigger node that fails to implement HMAC-SHA256 signature verification. Attackers who know the webhook URL can send unsigned POST requests to trigger workflows with arbitrary data, spoofing GitHub webhook events.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
Vendors
N8n
Products
N8n
CVE-2026-49231

Apache APISIX: Identity spoofing issue in APISIX opa plugin

Authentication Bypass by Spoofing vulnerability in opa plugin. An attacker could relay spoofed identity headers to upstream capitalising on non-default configuration in opa plugin. This could allow the attacker to assume higher privileges on the upstream service. This issue affects Apache APISIX: from 3.5.0 through 3.16.0. Users are recommended to upgrade to version 3.17.0, which fixes the issue.

CVSS 4.0 · 2.3 Low EPSS < 1% KEV · Not listed
Vendors
Apache
Products
Apisix
CVE-2026-39999

Apache APISIX: JWT Algorithm Confusion allows authentication bypass

Authentication Bypass by Spoofing vulnerability in Apache APISIX. The attacker can completely bypass authentication capitalising on certain configurations of jwt-auth plugin. This issue affects Apache APISIX: from v2.2 through v3.16.0. Users are recommended to upgrade to version v3.17.0, which fixes the issue.

CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed
Vendors
Apache
Products
Apache Apisix Apisix
CVE-2026-50141

Woodpecker gRPC agent_id metadata can be spoofed- cross-tenant agent impersonation

Woodpecker is a CI/CD engine. Starting in version 3.0.0 and prior to version 3.14.1, a vulnerability in Woodpecker CI's gRPC layer allowed any authenticated agent to impersonate any other agent on the same server by injecting a forged `agent_id` value into outgoing gRPC metadata. The server correctly verified the JWT token but then discarded the verified agent identity in favor of the client-supplied value. Version 3.14.1 patches the issue. As a workaround, disable org agents (`WOODPECKER_DISABLE_USER_AGENT_REGISTRATION=true`) and delete existing ones.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Woodpecker-ci
Products
Woodpecker
CVE-2026-53849

OpenClaw < 2026.5.7 - Privilege Escalation via Mutable Discord Display Names in allowFrom

OpenClaw before 2026.5.7 contains a privilege escalation vulnerability where the allowFrom feature improperly validates Discord account identity using mutable display names instead of immutable user IDs. Attackers with Discord accounts can change their display name to match a policy entry and gain unauthorized agent access intended for another Discord identity.

CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed
Vendors
Openclaw
Products
Openclaw
CVE-2026-36537

ThingsBoard OAuth 2.0 Authentication Bypass and Account Takeover

ThingsBoard v4.3.0.1 is vulnerable to an authentication bypass during the OAuth authorization code exchange. The application improperly trusts user-supplied identity data within the user parameter of the /login/oauth2/code/ endpoint. By manipulating the email address in this JSON object, a remote attacker can bypass authentication and gain full access to any existing user account on the platform without possessing the target user's credentials. This results in a complete account takeover.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Thingsboard
Products
Thingsboard
CVE-2026-34873

mbedtls: Mbed TLS: Client impersonation during TLS 1.3 session resumption

An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Mbed-tls Trustedfirmware
Products
Mbedtls Mbed Tls
CVE-2026-32666

Automated Logic WebCTRL Premium Server Authentication Bypass by Spoofing

WebCTRL systems that communicate over BACnet inherit the protocol's lack of network layer authentication. WebCTRL does not implement additional validation of BACnet traffic so an attacker with network access could spoof BACnet packets directed at either the WebCTRL server or associated AutomatedLogic controllers. Spoofed packets may be processed as legitimate.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Automatedlogic
Products
Webctrl Server