CVE-2026-9753 Server crash via malformed binary diff passed to $_internalApplyOplogUpdate.

The $internalApplyOplogUpdate aggregation pipeline stage can be used to execute a document diff containing a malformed binary diff to return memory out-of-bounds or crash the server. $internalApplyOplogUpdate can be executed by any authenticated user with access to the aggregate command...

Server crash via malformed binary diff passed to $_internalApplyOplogUpdate.

The $internalApplyOplogUpdate aggregation pipeline stage can be used to execute a document diff containing a malformed binary diff to return memory out-of-bounds or crash the server. $internalApplyOplogUpdate can be executed by any authenticated user with access to the aggregate command...

CVE-2026-9753

The vulnerability CVE-2026-9753 affects MongoDB’s aggregation pipeline via the internal stage $_internalApplyOplogUpdate. The issue allows an attacker with authenticated access to the aggregate command to pass a document diff containing a malformed binary diff, which can cause memory out-of-bound...

CVE-2026-9752 GeometryCollection with strict-winding polygon causes server crash during 2dsphere index key generation

An authorized user could trigger a server crash by running a query with a 2dsphere index on a field that stores a GeoJSON GeometryCollection containing a Polygon with a strict-winding CRS. Strict-winding polygons are intentionally unsupported for indexing, but the guard that rejects them does not...

CVE-2026-9752 GeometryCollection with strict-winding polygon causes server crash during 2dsphere index key generation

An authorized user could trigger a server crash by running a query with a 2dsphere index on a field that stores a GeoJSON GeometryCollection containing a Polygon with a strict-winding CRS. Strict-winding polygons are intentionally unsupported for indexing, but the guard that rejects them does not...

CVE-2026-9752 GeometryCollection with strict-winding polygon causes server crash during 2dsphere index key generation

An authorized user could trigger a server crash by running a query with a 2dsphere index on a field that stores a GeoJSON GeometryCollection containing a Polygon with a strict-winding CRS. Strict-winding polygons are intentionally unsupported for indexing, but the guard that rejects them does not...

CVE-2026-9752

MongoDB CVE-2026-9752 describes a vulnerability where an authorized user can trigger a server crash by executing a query that builds a 2dsphere index on a field containing a GeoJSON GeometryCollection with a Polygon that uses a strict-winding CRS. The underlying issue is that while strict-winding...

GeometryCollection with strict-winding polygon causes server crash during 2dsphere index key generation

An authorized user could trigger a server crash by running a query with a 2dsphere index on a field that stores a GeoJSON GeometryCollection containing a Polygon with a strict-winding CRS. Strict-winding polygons are intentionally unsupported for indexing, but the guard that rejects them does not...

CVE-2026-9749 Using MaxKey() may crash the server

This issue can occur when running an aggregation pipeline that uses the internal $exchange stage configured with key-range partitioning and order-preserving delivery. If a single key range produces enough documents to fill its exchange buffer that is, many results are routed to the same consumer,...

CVE-2026-9749

The CVE-2026-9749 entry describes a bug in MongoDB where an aggregation pipeline using the internal $exchange stage with key-range partitioning and order-preserving delivery can cause a server crash. When a single key range produces many results that fill its exchange buffer, the code path detect...

CVE-2026-9746 Server crashes in case of the use of exchange

When using $changestreams and $requestReshardingResumeToken with the exchange option the server hits an invariant which causes the server to crash. There are no special privileges needed. The user must be logged in to issue the statement...

CVE-2026-9746 Server crashes in case of the use of exchange

When using $changestreams and $requestReshardingResumeToken with the exchange option the server hits an invariant which causes the server to crash. There are no special privileges needed. The user must be logged in to issue the statement...

CVE-2026-9746

CVE-2026-9746 affects MongoDB Server when using $changestreams with $_requestReshardingResumeToken and the exchange option. The issue causes the server to hit an invariant and crash without requiring special privileges (user must be logged in). The available data identifies the affected feature (...

Server crashes in case of the use of exchange

When using $changestreams and $requestReshardingResumeToken with the exchange option the server hits an invariant which causes the server to crash. There are no special privileges needed. The user must be logged in to issue the statement...

CVE-2026-9746 Server crashes in case of the use of exchange

When using $changestreams and $requestReshardingResumeToken with the exchange option the server hits an invariant which causes the server to crash. There are no special privileges needed. The user must be logged in to issue the statement...

CVE-2026-9742

The CVE-2026-9742 entry describes a vulnerability in MongoDB where, when OIDC authentication is enabled, a crafted value in the mechanism parameter of the authenticate command can crash the server. The authenticate command is reachable by unauthenticated clients, enabling pre-auth denial-of-servi...

CVE-2026-9742 Authenticate command with specific mechanism parameter can trigger server crash

When OIDC authentication is enabled in configuration, clients may set specific values in the "mechanism" parameter of the "authenticate" command that lead to server crash. The authenticate command is accessible to unauthenticated clients, leading to pre-auth denial-of-service in affected product...

CVE-2026-9742 Authenticate command with specific mechanism parameter can trigger server crash

When OIDC authentication is enabled in configuration, clients may set specific values in the "mechanism" parameter of the "authenticate" command that lead to server crash. The authenticate command is accessible to unauthenticated clients, leading to pre-auth denial-of-service in affected product...

Authenticate command with specific mechanism parameter can trigger server crash

When OIDC authentication is enabled in configuration, clients may set specific values in the "mechanism" parameter of the "authenticate" command that lead to server crash. The authenticate command is accessible to unauthenticated clients, leading to pre-auth denial-of-service in affected product...

ALPINE-CVE-2026-42764

Issue summary: Receiving a QUIC initial packet with an invalid token may trigger a NULL pointer dereference in the OpenSSL QUIC server with address validation disabled. Impact summary: NULL pointer dereference typically causes abnormal termination of the affected QUIC server process and a Denial ...