Weakness (CWE)
CWE-203: Observable Discrepancy
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.
How to prevent it (2 mitigations)
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Architecture and Design
Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
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Implementation
Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.
Source: MITRE CWE-203
82 results · Clear filters · Feed
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High 7.1
A vulnerability in OpenText OpenText Directory Services (OTDS) allows Black Box Reverse Engineering. This issue affects…
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High 8.8
Observable discrepancy in Animation in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to obtain cross-o…
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High 8.8
Observable discrepancy in Controls in Google Chrome prior to 156.0.8078.47 allowed a remote attacker leveraging social …
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High 8.8
Observable discrepancy in Media in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially leak c…
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High 8.8
Observable discrepancy in Network in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to leak cross-origi…
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High 8.8
Observable discrepancy in CSS in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to obtain sensitive inf…
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High 8.8
Observable discrepancy in Forms in Google Chrome prior to 156.0.8078.47 allowed a remote attacker leveraging social eng…
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High 8.8
Observable discrepancy in Animation in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to obtain sensiti…
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High 7.5
Active Directory Federation Services (AD FS) Information Disclosure Vulnerability
Observable discrepancy in Active Directory Federation Services (AD FS) allows an unauthorized attacker to disclose information over a network.
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High 7.5
Ghost: Invite Token Disclosure in Ghost Admin API
Ghost is a Node.js content management system. From 4.39.0 until 6.64.0, staff users with permission to view staff invites were able to discover the secret token of pending invites, including invites for roles with higher privileges than their own. This could …
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High 7.5
Ghost 4.39.0 before 6.64.0 Invite Token Disclosure via Admin API
Ghost from 4.39.0 before 6.64.0 contains an information disclosure vulnerability in the Admin API that allows staff users to view secret tokens of pending staff invites. Staff users with invite viewing permission can accept pending invites for higher-privileg…
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High 8.2
Bleichenbacher padding oracle in CMS RSA PKCS#1 v1.5 key-transport unwrap
Observable discrepancy in the CMS RSA PKCS#1 v1.5 key-transport unwrap (KeyTransRecipientInformation.UnwrapKey) in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker who holds a captured CMS EnvelopedData message, and who can sub…
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High 8.2
IesEngine block-cipher mode checks padding before MAC (CBC padding oracle)
Observable discrepancy in IesEngine.DecryptBlock in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker who has captured an IES or ECIES ciphertext, and who can submit modified ciphertexts for decryption under the same key pair, t…
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High 7.5
Ghost 2.10.0 before 6.63.0 Staff Enumeration via Content API
Ghost versions from 2.10.0 before 6.63.0 contain a staff enumeration vulnerability in the content API that allows unauthenticated attackers to leak user data. Attackers can observe discrepancies in API metadata responses to enumerate staff members and extract…
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High 7.5
Information disclosure due to side-channel in the Storage: Cache API component
Information disclosure due to side-channel in the Storage: Cache API component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
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High 7.1
Observable Discrepancy in Kibana Fleet Leading to Disclosure of Elastic Agent Elasticsearch API Keys
Observable Discrepancy (CWE-203) in Kibana Fleet can lead to information disclosure via Excavation (CAPEC-116). Fleet removes the Elasticsearch API key value of an enrolled Elastic Agent from the responses of its agent listing capability, but that capability …
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High 8.7
OpenPGP CFB quick-check oracle active on symmetric/session-key paths
In Bouncy Castle for Java before 1.85, OpenPGP CFB quick-check oracle active on symmetric/session-key paths. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 1.0.13 (1.0.X series), 2.…
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High 8.1
This issue was addressed with improved checks. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Taho…
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High 7.5
Capgo - Unauthenticated Organization Existence Enumeration via rescind_invitation RPC
Capgo (Cap-go/capgo) before 12.128.2 contains an information disclosure vulnerability in the Supabase PostgREST SECURITY DEFINER RPC function public.rescind_invitation that allows unauthenticated attackers to enumerate organization existence. The function ret…
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High 7.5
An issue in docuForm GmbH FSM Client v.11.11c allows a remote attacker to obtain sensitive information via the login.ph…
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High 7.5
Joomla com_booking 2.4.9 Information Disclosure via Account Enumeration
Joomla com_booking component 2.4.9 contains an information disclosure vulnerability that allows unauthenticated attackers to enumerate user accounts by exploiting the getUserData function in the customer controller. Attackers can send GET requests to index.ph…
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High 8.3
Authlib Vulnerable to JWE RSA1_5 Bleichenbacher Padding Oracle
Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a cryptographic padding oracle vulnerability was identified in the Authlib Python library concerning the implementation of the JSON Web Encryption (JWE) RSA1_5 …
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High 8.9
RustCrypto cmov: thumbv6m-none-eabi compiler emits non-constant time assembly when using cmovnz
RustCrypto CMOV provides conditional move CPU intrinsics which are guaranteed on major platforms to execute in constant-time and not be rewritten as branches by the compiler. Prior to 0.4.4, the thumbv6m-none-eabi (Cortex M0, M0+ and M1) compiler emits non-co…
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High 7.5
H3C SSL VPN n/a Username Enumeration via Login Script Credential Verification
H3C SSL VPN contains a user enumeration vulnerability that allows attackers to identify valid usernames through the 'txtUsrName' POST parameter. Attackers can submit different usernames to the login_submit.cgi endpoint and analyze response messages to disting…
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High 7.5
XiangShan Nanhu V2 and XiangShan Kunmighu V3 were discovered to use speculative execution and indirect branch predictio…
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High 7.2
Entrust nShield Connect XC, nShield 5c, and nShield HSMi through 13.6.11, or 13.7 (patched in 13.6.12 (LTS) and 13.9.0 …
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High 7.5
User Enumeration in CBK Soft's enVision
Observable Discrepancy, Exposure of Sensitive Information to an Unauthorized Actor, Exposure of Private Personal Information to an Unauthorized Actor vulnerability in CBK Soft Software Hardware Electronic Computer Systems Industry and Trade Inc. EnVision allo…
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High 7.5
Username enumeration vulnerability
Description: VMware NSX contains a username enumeration vulnerability. An unauthenticated malicious actor may exploit this to enumerate valid usernames, potentially leading to unauthorized access attempts. Impact: Username enumeration → facilitates unauthoriz…
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High 7.5
Timing Attack Vulnerability in parisneo/lollms
The parisneo/lollms repository is affected by a timing attack vulnerability in the `authenticate_user` function within the `lollms_authentication.py` file. This vulnerability allows attackers to enumerate valid usernames and guess passwords incrementally by a…
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High 8.7
User enumeration vulnerability in Daily Expense Manager
user enumeration vulnerability in Daily Expense Manager v1.0. To exploit this vulnerability a POST request must be sent using the name parameter in /check.php
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High 7.5
CODESYS Control V3 - OPC UA Server Authentication bypass
An unauthenticated remote attacker can gain access to sensitive information including authentication information when using CODESYS OPC UA Server with the non-default Basic128Rsa15 security policy.
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High 7.5
Draytek devices Vigor 165/166 prior to v4.2.6 , Vigor 2620/LTE200 prior to v3.9.8.8, Vigor 2860/2925 prior to v3.9.7, V…
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High 7.8
In multiple locations, there is a possible way to obtain any system permission due to a logic error in the code. This c…
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High 7.5
Vulnerability in the JD Edwards EnterpriseOne Tools product of Oracle JD Edwards (component: Web Runtime SEC). Supporte…
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High 7.5CVE-2024-54767 Public exploit
An access control issue in the component /juis_boxinfo.xml of AVM FRITZ!Box 7530 AX v7.59 allows attackers to obtain se…
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High 7.5
In the LG LAF component, there is a special command that allowed modification of certain partitions. This could lead to…
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High 7.5
An issue in Sourcebans++ before v.1.8.0 allows a remote attacker to obtain sensitive information via a crafted XAJAX ca…
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High 7.5
Video frames could have been leaked between origins in some situations. This vulnerability affects Firefox < 132, Firef…
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High 7.5
Observable timing discrepancy issue exists in IPCOM EX2 Series V01L02NF0001 to V01L06NF0401, V01L20NF0001 to V01L20NF04…
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High 7.5
The Kyber reference implementation before 9b8d306, when compiled by LLVM Clang through 18.x with some common optimizati…