Medium Severity CVEs Medium

3,831 documented vulnerabilities classified as medium severity.

Other levels: Critical High Low

Top Affected Vendors (Medium Severity)

All Medium CVEs

CVE-2026-29964
6.1 medium

HSC MailInspector v5.3.3-7 contains a Cross-Site Scripting (XSS) vulnerability in the /tap/tap.php endpoint due to improper neutralization of user-controlled input using alternate or obfuscated JavaScript syntax. The endpoint reflects unsanitized user input in HTTP responses without adequate output

Hsclabs Mailinspector May 18, 2026
CVE-2026-8843
6.5 medium

Creating a "2dsphere_bucket" index on a non-timeseries bucket collection will succeed, but any subsequent attempt to insert a document which triggers updating that index will crash the server. A similar issue occurs when creating "queryable_encrypted_range" indices. This issue affects MongoDB Serve

May 18, 2026
CVE-2026-38719
6.2 medium

OpENer v2.3-558-g1e99582 contains an out-of-bounds read vulnerability in the Common Packet Format (CPF) parser, specifically in CreateCommonPacketFormatStructure() in source/src/enet_encap/cpf.c. A crafted ENIP/CPF message can supply an attacker-controlled item_count value that is not consistently v

May 18, 2026
CVE-2026-36438
5.3 medium

An issue in Intelbras VIP-1230-D-G4 Version V2.800.00IB00C.0.T allows a remote attacker to obtain sensitive information via password reset functionality under /OutsideCmd

May 18, 2026
CVE-2026-20685
6.5 medium

An attacker in a privileged network position may be able to leak sensitive information. A path handling issue was addressed with improved validation. This issue is fixed in PCC Release 5E290.3.

May 18, 2026
CVE-2026-41949
5.9 medium

Dify version 1.14.1 and prior contain an authorization bypass vulnerability in the file preview endpoint that allows any authenticated user to read up to 3,000 characters of any uploaded document across all tenants and workspaces using only the file's UUID. Attackers can access the /console/api/file

May 18, 2026
CVE-2026-8802
4.3 medium

A vulnerability was detected in opensourcepos Open Source Point of Sale up to 3.4.2. This issue affects the function getPicThumb of the file app/Controllers/Items.php. The manipulation of the argument pic_filename results in path traversal. The attack may be launched remotely. The patch is identifie

May 18, 2026
CVE-2026-41119
6.8 medium

Dell Live Optics Windows and Personal Edition collectors contain an improper certificate validation vulnerability. A remote unauthenticated attacker could potentially exploit this vulnerability leading to loss of confidentiality and integrity.

May 18, 2026
CVE-2026-6345
6.5 medium

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail prevent disclosure of created user password which allows a malicious attacker to impersonate a user via the use of some of those passwords.. Mattermost Advisory ID: MMSA-2026-00614

Mattermost Mattermost Server May 18, 2026
CVE-2026-6343
4.3 medium

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to check public/private permissions which allows members without these permissions to access public playbooks via /get.. Mattermost Advisory ID: MMSA-2026-00591

Mattermost Mattermost Server May 18, 2026
CVE-2026-6339
4.3 medium

Mattermost versions 11.5.x <= 11.5.1, 11.4.x <= 11.4.3 fail to validate the X-Requested-With header on the burn-on-read reveal endpoint which allows an authenticated channel member to force the reveal of a burn-on-read message without recipient consent via a crafted Markdown image tag.. Mattermost A

Mattermost Mattermost Server May 18, 2026
CVE-2026-5163
6.5 medium

Mattermost versions 11.5.x <= 11.5.1 fail to verify channel membership when processing AI-assisted message rewrites which allows an authenticated attacker to read the content of threads in private channels and direct messages they do not have access to via a crafted request to the post rewrite endpo

Mattermost Mattermost Server May 18, 2026
CVE-2026-3471
6.5 medium

Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent an invalid URL from loading in a pop-up window in the Mattermost Desktop App which allows a malicious server owner to repeated crash the application via calling {{window.open('javascript:alert()');}}. Mattermost Advisory ID: MMSA-2

May 18, 2026
CVE-2026-3117
6.5 medium

Mattermost Plugins versions <=11.5 11.1.5 10.13.11 11.3.4.0 fail to properly check for permissions when processing commands in the Gitlab plugin which allows normal users to uninstall instances or setup webhook connections via the {{gitlab instance {option}}} or the {{/gitlab webhook {option}}} comm

May 18, 2026
CVE-2026-28732
4.3 medium

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 Fail to enforce slash command trigger-word uniqueness during command updates which allows an authenticated team member with Manage Own Slash Commands permission to hijack and impersonate existing system or custom slash comma

May 18, 2026
CVE-2026-6342
4.3 medium

Mattermost Plugins versions <=11.5 11.1.5 10.13.11 11.3.4.0 fail to appropriately check for valid namespaces which allows plugin users to create subscriptions to groups that were not whitelisted via creating groups that share the same prefix as a whitelisted group. Mattermost Advisory ID: MMSA-2026-

May 18, 2026
CVE-2026-6341
4.3 medium

Mattermost Plugins versions <=11.5 11.1.5 10.13.11 11.3.4.0 fail to have API-level checks on which groups the user can create issues or attach comments to which allows a user that is member of multiple groups to create issues to a locked group via direct API requests. Mattermost Advisory ID: MMSA-20

May 18, 2026
CVE-2026-6340
4.3 medium

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to validate 7zip archive structure before processing which allows an authenticated attacker to cause server memory exhaustion and denial of service via uploading a specially crafted 7zip file with excessive folder decla

May 18, 2026
CVE-2026-3637
4.3 medium

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to check the create_post channel permission during post edit operations which allows an authenticated attacker with revoked posting privileges to modify their existing posts via direct API requests to the post update an

May 18, 2026
CVE-2026-2325
4.3 medium

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to limit the size of the request body on the start meeting API endpoint, which allows an authenticated attacker to cause resource exhaustion or denial of service via a crafted oversized HTTP POST request to {{/api/v1/me

Mattermost Mattermost Server May 18, 2026
CVE-2026-28759
4.3 medium

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to validate that a remote cluster has access to a channel before processing membership removal requests during shared channel membership sync, which allows a malicious remote cluster to remove any user from any channel,

Mattermost Mattermost Server May 18, 2026
CVE-2026-1631
5.4 medium

The Feeds for YouTube (YouTube video, channel, and gallery plugin) WordPress plugin before 2.6.4 is vulnerable to unauthorized modification of the Feeds for YouTube (YouTube video, channel, and gallery plugin) WordPress plugin before 2.6.4's license key due to a missing capability check on the 'acti

May 18, 2026
CVE-2026-8786
6.3 medium

A vulnerability has been found in Tencent WeKnora up to 0.3.6. Affected by this issue is the function getKnowledgeBaseForInitialization of the file internal/handler/initialization.go of the component Config API Endpoint. The manipulation of the argument kbId leads to authorization bypass. It is poss

May 18, 2026
CVE-2026-8784
4.2 medium

A vulnerability was detected in npitre cramfs-tools up to 2.2. Affected is the function change_file_status of the file cramfsck.c. Performing a manipulation results in symlink following. The attack requires a local approach. The exploit is now public and may be used. The patch is named b4a3a695c9873

May 18, 2026