CVE-2026-13074
An unauthenticated remote client can cause excessive CPU consumption on a MongoDB server by sending a specific combination of parameters to
CVSS
5.3
Medium
EPSS
0.3%
p21
KEV
—
Exploit Today
6
0-100
Published: Jul 22, 2026 · Last modified: Aug 18, 2026 · CWE-770
0.3%EPSS · 30 days0.3%
2026-08-102026-09-06
An unauthenticated remote client can cause excessive CPU consumption on a MongoDB server by sending a specific combination of parameters to the awaitable hello command in exhaust mode. The server's handling of this combination results in a response loop that bypasses normal throttling, allowing a small number of connections to degrade server availability.
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-82753——
———Allocation of Resources Without Limits or Throttling vulnerability in ash-project ash_authentication_oauth2_server allows an unauthenticated attacker to exhaust database storage and memory.
The /authorize endpoint is unauthenticated by design. With Client ID Metadata Documents enabled, resolve_client/3 in AshAuthentication.Oauth2Server.CIMD fetches the document for each new URL-shaped client_id and upserts a client row, with no cap on the number of rows, no expiry or garbage collection, and no length bound on the fetched fields; the document was also placed in CIMD.Cache before validation, so even rejected documents held cache memory until their TTL. An attacker serving valid documents at many distinct URLs creates one permanent client row per URL, each able to carry multi-megabyte strings, growing storage and memory without bound.
This issue affects ash_authentication_oauth2_server: from 0.3.0 before 0.3.1.4hCVE-2026-86452——
———Affected versions of MISP permit unauthenticated or weakly constrained request paths to perform persistent work without adequate input bounds or rate limiting.
The users/forgot password-reset endpoint accepted an attacker-controlled email value without first imposing a reasonable length bound or validating its format. That value was then used to create an audit log entry and queue a password-reset job, causing the supplied value to be persisted more than once per request. The commit explicitly states that an unbounded unauthenticated request field was stored twice per call with no throttle.
The fix adds:
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a maximum email input length of 1024 bytes;
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email-format validation before persistent work;
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a per-source pre-authentication request budget;
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HTTP 429 responses when that budget is exceeded;
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a 15-minute cooldown for API-access request emails;
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POST-only handling and CSRF protection for the API-access request endpoint.
The new flood filter is specifically intended to limit persistent storage costs from anonymous requests such as password resets, registrations, and failed REST authentication attempts.
Version affected: ≤2.5.4513hCVE-2026-19204——
——0A client may send a WebSocket frame with an unknown opcode and a very large declared payload length, causing Jetty to attempt a large memory allocation and potentially exhaust the JVM heap.
This occurs when auto-fragmentation is enabled, as unknown opcodes bypass the normal maximum frame size handling and payload allocation occurs before the opcode is validated.16hCVE-2025-526573.5 LOW—
——0HCL MyXalytics was affected by Potential DOS Vulnerability. It allows users to input data without any restriction on the number of characters which can impact system performance or availability.16hCVE-2022-510085.3 MED—
——0PocketMine-MP before 4.12.3 fails to limit unauthenticated sessions, allowing attackers to exhaust player slots by creating sessions without sending LoginPacket. Attackers can flood the server with unauthenticated connections that occupy max-player slots, preventing legitimate players from joining.2dCVE-2026-857036.5 MED25.9%
——8A flaw has been found in ramon-victor freegpt-webui up to 098db3dfeb41555c2ca9269df0f13e10ec1c35dc. Affected by this issue is the function getJailbreak of the file server/backend.py of the component Jailbreak Mode. Executing a manipulation can lead to allocation of resources. The attack can be executed remotely. The exploit has been published and may be used. This product implements a rolling release for ongoing delivery, which means version information for affected or updated releases is unavailable. This vulnerability only affects products that are no longer supported by the maintainer.3d