Weakness (CWE)
CWE-208: Observable Timing Discrepancy
Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.
Source: MITRE CWE-208
251 results · Feed
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Medium 4.8CVE-2026-26717 Public exploit
OpenFUN Richie Observable Timing Discrepancy in its sync_course_run_from_request function
An issue in OpenFUN Richie (LMS) in src/richie/apps/courses/api.py. The application used the non-constant time == operator for HMAC signature verification in the sync_course_run_from_request function. This allows remote attackers to forge valid signatures and…
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Low 1.0
Apache Shiro: Brute force attack possible to determine valid user names
Observable Timing Discrepancy vulnerability in Apache Shiro. This issue affects Apache Shiro: from 1.*, 2.* before 2.0.7. Users are recommended to upgrade to version 2.0.7 or later, which fixes the issue. Prior to Shiro 2.0.7, code paths for non-existent vs. …
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High 7.4CVE-2025-68621 Public exploit
Trilium Notes has a Timing Attack Vulnerability in /api/login/sync
Trilium Notes is an open-source, cross-platform hierarchical note taking application with focus on building large personal knowledge bases. Prior to 0.101.0, a critical timing attack vulnerability in Trilium's sync authentication endpoint allows unauthenticat…
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Medium 5.3
PrestaShop has a time based enumeration in FO login form
PrestaShop is an open source e-commerce web application. Prior to 8.2.4 and 9.0.3, there is a time-based user enumeration vulnerability in the user authentication functionality of PrestaShop. This vulnerability allows an attacker to determine whether a custom…
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Medium 5.3
Username enumeration through timing difference in mod_wsgi authentication handler
An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28. The `django.contrib.auth.handlers.modwsgi.check_password()` function for authentication via `mod_wsgi` allows remote attackers to enumerate users via a timing attack. Earli…
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Medium 6.0
OctoPrint has Timing Side-Channel Vulnerability in API Key Authentication
OctoPrint provides a web interface for controlling consumer 3D printers. OctoPrint versions up to and including 1.11.5 are affected by a (theoretical) timing attack vulnerability that allows API key extraction over the network. Due to using character based co…
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Medium 5.3
Spring Security - BCrypt Password Encoder maximum password length breaks timing attack mitigation
The fix applied in CVE-2025-22228 inadvertently broke the timing attack mitigation implemented in DaoAuthenticationProvider. This can allow attackers to infer valid usernames or other authentication behavior via response-time differences under certain configu…
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Low 3.7
FastAPI Api Key has a timing side-channel in verify_key that allows statistical key validity detection
FastAPI Api Key provides a backend-agnostic library that provides an API key system. Version 1.1.0 has a timing side-channel vulnerability in verify_key(). The method applied a random delay only on verification failures, allowing an attacker to statistically …
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Medium 5.3
File Browser vulnerable to Username Enumeration via Timing Attack in /api/login
File Browser provides a file managing interface within a specified directory and can be used to upload, delete, preview, rename, and edit files. Prior to version 2.55.0, the JSONAuth. Auth function contains a logic flaw that allows unauthenticated attackers t…
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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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Medium 5.7
Observable Timing Discrepancy (CWE-208) in HBUS devices may allow an attacker with physical access to the device to ext…
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Medium 5.3
Mbed TLS through 3.6.4 has an Observable Timing Discrepancy.
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Medium 6.2
Mbed TLS before 3.6.5 allows a local timing attack against certain RSA operations, and direct calls to mbedtls_mpi_mod_…
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Low 3.1
Insecure string comparison enables timing attacks
Mattermost versions 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to use constant-time comparison for sensitive string comparisons which allows attackers to exploit timing oracles to perform byte-by-byte brute force attacks via response time analysis on Cloud AP…
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Medium 4.3
Timing-Based Username Enumeration in DivvyDrive Information Technologies' DivvyDrive Web
Observable Timing Discrepancy vulnerability in DivvyDrive Information Technologies Inc. DivvyDrive Web allows Cross-Domain Search Timing. This issue affects DivvyDrive Web: from 4.8.2.2 before 4.8.2.15.
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Medium 6.6
Timing Attack Vulnerability in SCRAM Authentication
SCRAM (Salted Challenge Response Authentication Mechanism) is part of the family of Simple Authentication and Security Layer (SASL, RFC 4422) authentication mechanisms. Prior to version 3.2, a timing attack vulnerability exists in the SCRAM Java implementatio…
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Low 2.7
Timing attacks against Proxy’s basic authentication are possible
Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, the access control mechanism for the Proxy feature uses simple string comparisons and is therefore vulnerable to timing attacks. An attacker may try to gues…
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Medium 5.9
httpsig-rs's HMAC verification is vulnerable to timing attack
httpsig-rs is a Rust implementation of IETF RFC 9421 http message signatures. Prior to version 0.0.19, the HMAC signature comparison is not timing-safe. This makes anyone who uses HS256 signature verification vulnerable to a timing attack that allows the atta…
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Medium 6.9
Liferay Portal exposes ERC which can lead to exploit the time response attack
Enumeration of ERC from object entry in Liferay Portal 7.4.0 through 7.4.3.128, and Liferay DXP 2024.Q3.0 through 2024.Q3.1, 2024.Q2.0 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.12, 2023.Q4.0 and 7.4 GA through update 92 allow attackers to determine existe…
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Medium 5.9
Timing side-channel vulnerability in AES-CBC decryption with PKCS#7 padding in Oberon PSA Crypto library
Padding oracle attack vulnerability in Oberon microsystem AG’s Oberon PSA Crypto library in all versions since 1.0.0 and prior to 1.5.1 allows an attacker to recover plaintexts via timing measurements of AES-CBC PKCS#7 decrypt operations.
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Medium 5.9
Timing side-channel vulnerability in AES-CBC decryption with PKCS#7 padding in ocrypto library
Padding oracle attack vulnerability in Oberon microsystem AG’s ocrypto library in all versions since 3.1.0 and prior to 3.9.2 allows an attacker to recover plaintexts via timing measurements of AES-CBC PKCS#7 decrypt operations.
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Medium 6.9
Liferay Portal Username Enumeration Vulnerability
Username enumeration vulnerability in Liferay Portal 7.4.0 through 7.4.3.132, and Liferay DXP 2024.Q4.0 through 2024.Q4.7, 2024.Q3.0 through 2024.Q3.13, 2024.Q2.0 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.14 and 7.4 GA through update 92 allows attackers t…
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Medium 6.0
Observable timing discrepancy in firmware for some Intel(R) CSME and Intel(R) SPS may allow a privileged user to potent…
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Low 2.5
riscv-boom SonicBOOM L1 Data Cache timing discrepancy
A vulnerability has been found in riscv-boom SonicBOOM up to 2.2.3 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component L1 Data Cache Handler. The manipulation leads to observable timing discrepancy. Local…
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High 8.5
Quiet uses insecure, inconsistent verification on local backend token
Quiet is an alternative to team chat apps like Slack, Discord, and Element that does not require trusting a central server or running one's own. In versions 6.1.0-alpha.4 and below, Quiet's API for backend/frontend communication was using an insecure, not con…
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Medium 6.9
SignXML's signature verification with HMAC is vulnerable to a timing attack
SignXML is an implementation of the W3C XML Signature standard in Python. When verifying signatures with X509 certificate validation turned off and HMAC shared secret set (`signxml.XMLVerifier.verify(require_x509=False, hmac_key=...`), versions of SignXML pri…
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Low 2.6
vLLM’s Chunk-Based Prefix Caching Vulnerable to Potential Timing Side-Channel
vLLM is an inference and serving engine for large language models (LLMs). Prior to version 0.9.0, when a new prompt is processed, if the PageAttention mechanism finds a matching prefix chunk, the prefill process speeds up, which is reflected in the TTFT (Time…
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Medium 5.3
Webhook Secret Exposure via Timing attack in MSteams plugin
Mattermost Plugin MSTeams versions <2.1.0 and Mattermost Server versions 10.5.x <=10.5.1 with the MS Teams plugin enabled fail to perform constant time comparison on a MSTeams plugin webhook secret which allows an attacker to retrieve the webhook secret of th…
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Low 2.3
User enumeration via timing attack in Zabbix web interface
Execution time for an unsuccessful login differs when using a non-existing username compared to using an existing one.
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High 7.5
String::Compare::ConstantTime for Perl through 0.321 is vulnerable to timing attacks that allow an attacker to guess the length of a secret string
String::Compare::ConstantTime for Perl through 0.321 is vulnerable to timing attacks that allow an attacker to guess the length of a secret string. As stated in the documentation: "If the lengths of the strings are different, because equals returns false righ…
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Medium 5.3
An issue was discovered in OpenSlides before 4.2.5. During login at the /system/auth/login/ endpoint, the system's resp…
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Medium 5.8
Post-Quantum Secure Feldman's Verifiable Secret Sharing has Timing Side-Channels in Matrix Operations
Post-Quantum Secure Feldman's Verifiable Secret Sharing provides a Python implementation of Feldman's Verifiable Secret Sharing (VSS) scheme. In versions 0.8.0b2 and prior, the `feldman_vss` library contains timing side-channel vulnerabilities in its matrix o…
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Medium 6.5
IBM Common Cryptographic Architecture information disclosure
IBM Common Cryptographic Architecture 7.0.0 through 7.5.51 could allow a remote attacker to obtain sensitive information during the creation of ECDSA signatures to perform a timing-based attack.
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Medium 5.4
An issue was discovered in the Winbox service of MikroTik RouterOS long-term release v6.43.13 through v6.49.13 and stab…
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High 8.6
Security Update for the OPC UA .NET Standard Stack
Vulnerability in the OPC UA .NET Standard Stack before 1.5.374.158 allows an unauthorized attacker to bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled.
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Medium 6.5
Apache Hive: Timing Attack Against Signature in LLAP util
Use of Arrays.equals() in LlapSignerImpl in Apache Hive to compare message signatures allows attacker to forge a valid signature for an arbitrary message byte by byte. The attacker should be an authorized user of the product to perform this attack. Users are …
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Medium 5.3
Issue with AWS Sign-in IAM User Login Flow - Possible Username Enumeration
Variable response times in the AWS Sign-in IAM user login flow allowed for the use of brute force enumeration techniques to identify valid IAM usernames in an arbitrary AWS account.
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Medium 5.3
GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-ch…
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Medium 6.3
authentik allows a timing attack due to missing constant time comparison for metrics view
authentik is an open-source identity provider. Due to the usage of a non-constant time comparison for the /-/metrics/ endpoint it was possible to brute-force the SECRET_KEY, which is used to authenticate the endpoint. The /-/metrics/ endpoint returns Promethe…
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Medium 5.9
Observable timing discrepancy in some Intel(R) QAT Engine for OpenSSL software before version v1.6.1 may allow informat…