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CVE-2023-54398

Yonyou U8 Cloud Java Deserialization RCE via FileManageServlet

Yonyou U8 Cloud contains an unauthenticated Java deserialization vulnerability in the nc.impl.pub.filesystem.FileManageServlet component that allows remote unauthenticated attackers to execute arbitrary OS commands by sending a serialized payload via POST request. Attackers can exploit the doAction method, which passes raw HTTP request body data directly to ObjectInputStream.readObject() without filtering, to achieve remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-02-13.

CVSS 4.0 · 9.3 Critical EPSS 1.2% KEV · Not listed
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CVE-2026-11729

IBM MQ Java messaging is vulnerable to remote code execution

IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 could allow an authenticated attacker to execute arbitrary code in client applications due to unsafe deserialization that enables JNDI injection attacks.

CVSS 3.1 · 8.5 High EPSS < 1% KEV · Not listed
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Ibm
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Mq
CVE-2026-13293

IBM MQ Java messaging is vulnerable to remote code execution

IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 could allow a remote authenticated attacker to execute arbitrary code on the system due to the deserialization of untrusted data.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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Ibm
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Mq
CVE-2026-17416

IBM App Connect Enterprise Toolkit is vulnerable to arbitrary code execution due to multiple CVEs

IBM App Connect Enterprise 13.0.1.0 through 13.0.8.0, and 12.0.1.0 through 12.0.12.27 could allow a local attacker to execute arbitrary code due to insecure deserialization.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Ibm
CVE-2026-91842

OpenBankProject OBP-API Kryo Redis.scala KryoInjection.invert deserialization

A vulnerability has been found in OpenBankProject OBP-API up to 1.10.1. This impacts the function KryoInjection.invert of the file obp-api/src/main/scala/code/api/cache/Redis.scala of the component Kryo Handler. Such manipulation leads to deserialization. The attack can be launched remotely. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

CVSS 4.0 · 2.1 Low EPSS < 1% KEV · Not listed
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CVE-2026-78175

Tutor LMS <= 4.0.7 - Authenticated (Subscriber+) PHP Object Injection to Remote Code Execution

The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 4.0.7 via the `withdraw_method_field` parameter of the `tutor_save_withdraw_account` AJAX handler. This is due to the handler lacking any capability or role check, relying solely on a nonce, while also passing attacker-supplied values through `esc_sql()`, which replaces every `%` character with a 66-byte HMAC placeholder token before the data is serialized and stored via `update_user_meta()`; when the meta is later retrieved, the placeholder is collapsed back to a single `%`, leaving serialized string length declarations 65 bytes greater than the actual content, and because array keys originate from entirely unescaped POST field names, `unserialize()` over-reads into attacker-controlled bytes, allowing injection of an arbitrary serialized object stream. This makes it possible for authenticated attackers, with subscriber-level access and above, to achieve remote code execution on the server by triggering the `GuzzleHttp\Cookie\FileCookieJar` POP chain, reachable via the `spl_autoload_register` loader in `TUTOR\RestAPI` which loads the plugin's own bundled PayPal Composer autoloader, writing attacker-controlled content to an attacker-specified filename. This has an unauthenticated pathway when user registration is enabled, which is common for students and teachers to register, and it requires the monetization feature to be enabled.

CVSS 3.1 · 8.8 High EPSS 1.1% KEV · Not listed
Vendors
CVE-2026-62263

OpenAM: WebAuthn Java deserialization RCE via ObjectInputFilter depth>1 bypass

Open Access Management (OpenAM) is an access management solution. Prior to 16.1.2, WebAuthnAuthentication.deserialize applies an ObjectInputFilter that allows every serialized object at depth greater than 1 and therefore constrains only an AuthenticatorImpl root object. A pre-authentication attacker can supply a userHandle whose serialized graph has a valid AuthenticatorImpl root and a nested gadget class, causing readObject or readResolve execution before the cast and assertion verification when a usable gadget is on the classpath. This bypasses the incomplete remediation for the earlier WebAuthn deserialization vulnerability. This issue is fixed in version 16.1.2.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
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CVE-2026-45051

OpenAM Pre-auth RCE via Java Deserialization in WebAuthn Authenticator Storage

Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, WebAuthnAuthentication loads a serialized AuthenticatorImpl object graph from the configured userAttribute through loadAuthenticators without an ObjectInputFilter. Exploitation requires the WebAuthn flow to be reachable and an attacker to have previously written controlled data to that attribute through delegated administration, provisioning, directory access, legacy REST self-registration, or unsafe configuration. When those non-default conditions hold, the data is deserialized before assertion verification and can execute a classpath gadget in the application server process. This issue is fixed in version 16.1.1.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
Products
CVE-2026-39832

Invoking agent constraints dropped when forwarding keys in golang.org/x/crypto/ssh/agent

When adding a key to a remote agent constraint extensions such as restrict-destination-v00@openssh.com were not serialized in the request. Destination restrictions were silently stripped when forwarding keys, allowing unrestricted use of the key on the remote host. The client now serializes all constraint extensions. Additionally, the in-memory keyring returned by NewKeyring() now rejects keys with unsupported constraint extensions instead of silently ignoring them.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
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CVE-2026-90919

LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Config Server Pickle Deserialization

LightLLM through 1.2.0 contains a remote code execution vulnerability in the Config Server's unauthenticated /visual_register WebSocket endpoint that passes the first client frame directly to pickle.loads(). Attackers can reach the Config Server port and send a malicious serialized payload with a __reduce__ method to execute arbitrary code with Config Server process privileges.

CVSS 4.0 · 9.3 Critical EPSS 1.1% KEV · Not listed
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CVE-2026-78006

The Events Calendar <= 6.17.4 - Unauthenticated PHP Object Injection to Remote Code Execution

The The Events Calendar plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 6.17.4 via the is_safe_widget_instance function. This is due to insufficient protection in is_safe_widget_instance, which can be bypassed because PHP fires magic methods during its pre-parse, combined with enable_rendering_widget_copied() forging a valid wp_hash integrity attribute before unserialize() is reached. This makes it possible for unauthenticated attackers to execute code on the server. This is exploitable without authentication or approval because the plugin's V2 single-event template runs do_blocks() over buffered comment HTML, and WordPress returns a moderation-hash URL that allows an unauthenticated commenter to immediately view their own pending comment, delivering the injected block markup to the vulnerable code path before any moderation occurs. This does require comments to be enabled and visible on events.

CVSS 3.1 · 9.8 Critical EPSS 1.5% KEV · Not listed
CVE-2026-17156

IBM App Connect Enterprise Toolkit is vulnerable to arbitrary code execution due to multiple CVEs

IBM App Connect Enterprise 13.0.1.0 through 13.0.8.0, and 12.0.1.0 through 12.0.12.27 could allow a local attacker to execute arbitrary code due to insecure deserialization.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Ibm
CVE-2026-90490

lenve vhr MailReceiver deserialization

A security flaw has been discovered in lenve vhr 1.0-SNAPSHOT. This issue affects some unknown processing of the component MailReceiver. Performing a manipulation results in deserialization. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. 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
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Products
Vhr
CVE-2026-90777

ESPnet before 202609 Remote Code Execution via Unsafe Deserialization

ESPnet before 202609 deserializes pretrained model checkpoints using torch.load with weights_only=False, allowing arbitrary code execution from attacker-supplied files. Attackers can craft malicious checkpoint files that execute code during deserialization when loaded through the initialization or fine-tuning path.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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CVE-2026-90614

FedML-AI FedML MQTT+S3 Communication Backend remote_storage.py S3Storage.read_model deserialization

A weakness has been identified in FedML-AI FedML up to 0.9.6. Affected by this issue is the function S3Storage.read_model of the file fedml/core/distributed/communication/s3/remote_storage.py of the component MQTT+S3 Communication Backend. This manipulation of the argument s3_key_str causes deserialization. Remote exploitation of the attack is possible. The project was informed of the problem early through an issue report but has not responded yet.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
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CVE-2024-58381

PocketMine-MP before 5.11.1 Denial of Service via LoginPacket

PocketMine-MP before 5.11.1 contains a denial of service vulnerability in LoginPacket JSON processing that allows remote attackers to crash the server by sending malformed JSON data. Attackers can exploit improper object initialization from scalar JSON types to trigger unset required properties, causing the application to crash.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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CVE-2025-69130

WordPress Entrepreneur - Booking for Small Businesses WordPress Theme theme < 3.1.5 - PHP Object Injection vulnerability

Deserialization of Untrusted Data vulnerability in Pixel Makers Creative INC. Entrepreneur - Booking for Small Businesses WordPress Theme allows Object Injection. This issue affects Entrepreneur - Booking for Small Businesses WordPress Theme: from n/a before 3.1.5.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
CVE-2026-84646

jenkins: Jenkins: Unauthorized creation of user objects via deserialization vulnerability

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, user objects can appear as nested field values in other deserialized XML objects, allowing attackers with Overall/Read permission to create user objects by submitting crafted XML.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
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