CVE-2026-56191

Microsoft Exchange Online Tampering Vulnerability

Improper authentication in Microsoft Exchange Online allows an unauthorized attacker to perform tampering over a network.

CVSS 3.1 · 10 Critical EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Exchange Online

CVE-2026-55626

xrdp: No authentication required with Xvnc backend on RHEL 9

xrdp is an open source RDP server. In versions 0.10.6 and prior, when an authenticated user session is initialized using the Xvnc backend over UNIX domain sockets, the Xvnc process is launched with insufficient authentication mechanisms. A local authenticated attacker could exploit this vulnerability to bypass intended session isolation, allowing them to unauthorizedly view or control the active desktop sessions of other users on the same system. Users using other backends, such as xorgxrdp or Xvnc over TCP sockets, are not affected. This issue has been fixed in version 0.10.6.1.

CVSS 3.1 · 8 High EPSS < 1% KEV · Not listed

Vendors

Neutrinolabs

Products

Xrdp

CVE-2026-62825

Azure Key Vault Elevation of Privilege Vulnerability

Improper authentication in Azure Key Vault allows an unauthorized attacker to elevate privileges over a network.

CVSS 3.1 · 10 Critical EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Azure Key Vault

CVE-2026-10697

MFA Bypass in MOVEit Transfer

Improper Authentication vulnerability in Progress MOVEit Transfer. This issue affects MOVEit Transfer: before 2025.1.5, from 2026.0.0 before 2026.0.3.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Progress

Products

Moveit Transfer

CVE-2026-46715

Flask-Security-Too OAuth reauthentication freshness bypass via cross- user OAuth identity acceptance

Flask-Security-Too allows users to add security features to their Flask applicationa. Version 5.8.0's OAuth reauthentication flow can mark a session as fresh after verifying an OAuth account that belongs to a different user. If an attacker can operate an already-authenticated but stale victim session, they can complete OAuth verification using their own OAuth identity. The victim session is then treated as recently reauthenticated, allowing freshness-protected account actions to proceed. Version 5.8.1 contains a fix for this issue.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Pallets-eco

Products

Flask-security-too

CVE-2026-14291

Security Ninja (Premium) < 5.290 - Two-Factor Authentication Bypass via secnin_skip_2fa

The security-ninja-premium WordPress plugin before 5.290 does not verify the second authentication factor in one of its two-factor authentication code paths, allowing an unauthenticated attacker who knows a user's password to complete authentication without the one-time code and bypass enforced two-factor authentication for any account, including administrators. The affected two-factor module ships only in the premium build.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

—

Products

—

CVE-2026-53595

FreeScout vulnerable to anonymous account takeover via /user-setup empty invite_hash on MySQL

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.224, the public endpoint `POST /user-setup/{hash}/{invite_sent_at}` (`OpenController@userSetupSave`) selects the target account solely by its `invite_hash` column, then overwrites that account's email and password and logs in as it. No authentication, cookie, or prior session is required. After a user activates, FreeScout sets `invite_hash` to the empty string. On MySQL and MariaDB, `VARCHAR` equality ignores trailing spaces, so a single URL-encoded space (`%20`) matches the stored empty string and selects the lowest-id activated user. The expiry guard decrypts `invite_sent_at` with the target's password hash, but `Helper::decrypt` returns its raw input unchanged when decryption fails. A plaintext numeric value such as `9999999999` therefore passes the time-to-live check without any secret. The result is that an anonymous attacker sets the email and password of the lowest-id activated FreeScout account (a support agent, or an administrator if one was added by invitation) and authenticates as that account. Version 1.8.224 contains a fix.

CVSS 3.1 · 9.4 Critical EPSS 1.9% KEV · Not listed

Vendors

Freescout Helpdesk

Products

Freescout

CVE-2026-16210

newpanjing simpleui AjaxAdmin AJAX Endpoint admin.py self.get_action missing authentication

A vulnerability was found in newpanjing simpleui 2026.01.13. This affects the function self.get_action of the file simpleui/admin.py of the component AjaxAdmin AJAX Endpoint. Performing a manipulation results in missing authentication. Remote exploitation of the attack is possible. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Newpanjing

Products

Simpleui

CVE-2026-16198

Sipeed PicoClaw First Run Setup access_control.go authentication bypass

A vulnerability was detected in Sipeed PicoClaw up to 0.2.9. The impacted element is an unknown function of the file web/backend/middleware/access_control.go of the component First Run Setup. Performing a manipulation of the argument allowed_cidrs results in authentication bypass using alternate channel. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitability is regarded as difficult. The exploit is now public and may be used. The patch is named 017601354be38cb027ff3ffb01aed79bd5d12610. Applying a patch is the recommended action to fix this issue.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed

Vendors

Sipeed

Products

Picoclaw

CVE-2026-12341

SailPoint IdentityIQ Improper Bearer Token Validation Vulnerability

This vulnerability impacts all versions of IdentityIQ and allows an unauthenticated attacker unauthorized access to protected APIs and data due to improper validation of OAuth bearer tokens.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Sailpoint Sailpoint Technologies

Products

Identityiq Identityiq

CVE-2026-42210

Webmin 2FA requirement bypass

Webmin is a web-based system administration tool for Unix-like servers. Prior to version 2.640, for Webmin accounts that require a second authentication factor (typically TOTP), an attacker with knowledge of the username and password can bypass the 2FA requirement by using Basic authentication. Webmin is a web-based system administration tool for Unix-like servers. As a workaround, apply the patch from commit da18a16c84ae5c0b78cad79609cb0efb174000ec manually.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Webmin

Products

Webmin

CVE-2026-48812

FreeScout Allows Unauthenticated Access to Legacy Attachment Files

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.221, FreeScout's attachment download route skips token authentication for any attachment whose `token_type` is set to `1` (`TOKEN_TYPE_LEGACY`). Because this route is unauthenticated and the file path is deterministic, an unauthenticated remote attacker can download any attachment that was created by an older version of FreeScout without possessing a valid token or session. Version 1.8.221 contains a fix.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Freescout Helpdesk

Products

Freescout

CVE-2026-53591

FreeScout Vulnerable to Unauthenticated Conversation Thread Injection via HMAC Length Bypass in FetchEmails

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.223, an unauthenticated attacker can inject messages into any existing support conversation by sending a single email to the helpdesk's public address with a crafted `In-Reply-To` header. No credentials, tokens, or prior access are required. The injected message is rendered in the agent UI as a legitimate customer reply, the conversation is automatically reopened, and the `last_reply_from` field is set to the attacker's identity. Version 1.8.223 contains a fix.

CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed

Vendors

Freescout Helpdesk

Products

Freescout

CVE-2026-16076

AstrBotDevs AstrBot API open_api.py OpenApiRoute.chat_send authentication spoofing

A vulnerability has been found in AstrBotDevs AstrBot up to 4.25.5. This issue affects the function OpenApiRoute.chat_send of the file astrbot/dashboard/routes/open_api.py of the component API. Such manipulation of the argument Username leads to authentication bypass by spoofing. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Astrbot

Products

Astrbot

CVE-2026-16083

Sipeed PicoClaw LINE Webhook line.go webhook.ParseRequest authentication replay

A security flaw has been discovered in Sipeed PicoClaw up to 0.2.9. This affects the function webhook.ParseRequest of the file pkg/channels/line/line.go of the component LINE Webhook. The manipulation results in authentication bypass by capture-replay. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. The reported GitHub issue was closed automatically with the label "not planned" by a bot.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Sipeed

Products

Picoclaw

CVE-2026-49852

joserfc: HS256/HS384/HS512 verify accepts empty/nil HMAC key (cross-language sibling of CVE-2026-45363)

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. Prior to 1.6.8, joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the caller-supplied verification key is the empty string or None, because HMACAlgorithm.sign and HMACAlgorithm.verify in src/joserfc/_rfc7518/jws_algs.py pass the output of OctKey.get_op_key(...) to hmac.new(...) and OctKey.import_key in src/joserfc/_rfc7518/oct_key.py only emits a SecurityWarning for keys shorter than 14 bytes without rejecting zero-length input. This issue is fixed in version 1.6.8.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Authlib

Products

Joserfc

CVE-2026-16209

Gerapy Project Upload Endpoint views.py missing authentication

A vulnerability has been found in Gerapy up to 0.9.13. The impacted element is an unknown function of the file gerapy/server/core/views.py of the component Project Upload Endpoint. Such manipulation leads to missing authentication. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The name of the patch is bd4891c60315f17611a3b7a651ffe0fba7cfe71e. Applying a patch is advised to resolve this issue.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Gerapy

Products

Gerapy

CVE-2026-55445

Qinglong: Incomplete fix for CVE-2026-3965: Improper Authentication

Qinglong is a timed task management platform supporting Python3, JavaScript, Shell, and Typescript. Prior to 2.20.1, the init guard middleware in back/loaders/express.ts checks /api/user/init but not /open/user/init, while rewrite('/open/*', '/api/$1') rewrites the whitelisted /open/* path after JWT authentication and the guard have passed; an unauthenticated attacker can send PUT /open/user/init to reset administrator credentials on an initialized instance. This issue is fixed in 2.20.1.

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed

Vendors

Whyour

Products

Qinglong

CVE-2026-52893

Wekan: OIDC Account Takeover via Unconditional Email-Based Account Merge in onCreateUser hook

Wekan is open source kanban built with Meteor. Prior to 9.32, the Wekan Accounts.onCreateUser hook in server/models/users.js merges OIDC logins into existing accounts when the OIDC email or username matches an existing Wekan user, without verifying ownership or checking email_verified. An attacker using an OIDC provider account with a victim's email or username can cause Wekan to merge the attacker's OIDC credentials into the victim account and then log in as that account. This issue is fixed in version 9.32.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed

Vendors

Wekan

Products

Wekan

CVE-2026-53514

Better Auth: Unauthorized invitation acceptance via unverified email match in organization plugin

Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, and in 1.6.14 and later when invitation IDs can be obtained outside the invited mailbox and requireEmailVerificationOnInvitation: true is not enabled, the organization plugin's acceptInvitation, rejectInvitation, getInvitation, and listUserInvitations recipient endpoints use session.user.email and an invitation ID without sufficient verified-email ownership proof, allowing a user with an unverified session for the invited email address to accept an organization invitation after obtaining the invitation ID. This issue is fixed for the original default behavior in version 1.6.11, while 1.6.14 restored compatibility for built-in opaque invitation IDs and leaves affected configurations requiring secure options.

CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed

Vendors

Better-auth

Products

Better Auth