Regular Expression Denial of Service (ReDoS)

Overview langchain-classic is a Building applications with LLMs through composability Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS via the parse function in the MRKLOutputParser class. An attacker can cause excessive CPU consumption and significan...

PYSEC-2026-75

LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service ReDoS vulnerability in the MRKLOutputParser.parse method libs/langchain/langchain/agents/mrkl/outputparser.py. The parser applies a backtracking-prone regular expression when extracting tool actions from...

CVE-2024-58340 LangChain <= 0.3.1 MRKLOutputParser ReDoS

LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service ReDoS vulnerability in the MRKLOutputParser.parse method libs/langchain/langchain/agents/mrkl/outputparser.py. The parser applies a backtracking-prone regular expression when extracting tool actions from...

CVE-2024-58340 LangChain <= 0.3.1 MRKLOutputParser ReDoS

LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service ReDoS vulnerability in the MRKLOutputParser.parse method libs/langchain/langchain/agents/mrkl/outputparser.py. The parser applies a backtracking-prone regular expression when extracting tool actions from...

CVE-2024-58340 LangChain <= 0.3.1 MRKLOutputParser ReDoS

LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service ReDoS vulnerability in the MRKLOutputParser.parse method libs/langchain/langchain/agents/mrkl/outputparser.py. The parser applies a backtracking-prone regular expression when extracting tool actions from...

LangChain 安全漏洞

LangChain is the LangChain open source framework for developing applications powered by the Large Language Model LLM. A security vulnerability exists in LangChain 0.3.1 and earlier versions, which stems from the MRKLOutputParser.parse method using a regular expression that is vulnerable to...

Out-of-bounds Read

Overview Affected versions of this package are vulnerable to Out-of-bounds Read via the ConvertToRegularExpression function. An attacker can cause a crash or access unintended memory by providing specially crafted input locally. Remediation Upgrade opencolorio to version 2.5.1 or higher. Referenc...

CVE-2025-15506

A vulnerability was found in AcademySoftwareFoundation OpenColorIO up to 2.5.0. This issue affects the function ConvertToRegularExpression of the file src/OpenColorIO/FileRules.cpp. Performing a manipulation results in out-of-bounds read. The attack needs to be approached locally. The exploit has...

CVE-2025-15506

A vulnerability was found in AcademySoftwareFoundation OpenColorIO up to 2.5.0. This issue affects the function ConvertToRegularExpression of the file src/OpenColorIO/FileRules.cpp. Performing a manipulation results in out-of-bounds read. The attack needs to be approached locally. The exploit has...

CVE-2025-15506 AcademySoftwareFoundation OpenColorIO FileRules.cpp ConvertToRegularExpression out-of-bounds

A vulnerability was found in AcademySoftwareFoundation OpenColorIO up to 2.5.0. This issue affects the function ConvertToRegularExpression of the file src/OpenColorIO/FileRules.cpp. Performing a manipulation results in out-of-bounds read. The attack needs to be approached locally. The exploit has...

CVE-2025-15506

The CVE-2025-15506 issue affects AcademySoftwareFoundation OpenColorIO (up to 2.5.0) in the ConvertToRegularExpression function within src/OpenColorIO/FileRules.cpp. The vulnerability enables an out-of-bounds read when a specific manipulation is performed, with local access required. Public explo...

CVE-2025-15506 AcademySoftwareFoundation OpenColorIO FileRules.cpp ConvertToRegularExpression out-of-bounds

A vulnerability was found in AcademySoftwareFoundation OpenColorIO up to 2.5.0. This issue affects the function ConvertToRegularExpression of the file src/OpenColorIO/FileRules.cpp. Performing a manipulation results in out-of-bounds read. The attack needs to be approached locally. The exploit has...

CVE-2026-22691: Inefficient Regular Expression Complexity

pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for malformed startxref. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-referen...

Regular Expression Denial of Service (ReDoS)

Overview pypdf is an A pure-python PDF library capable of splitting, merging, cropping, and transforming PDF files Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS in the flatten function. An attacker can cause excessive processing times by providing ...

CVE-2014-4720

Email::Address module before 1.904 for Perl uses an inefficient regular expression, which allows remote attackers to cause a denial of service CPU consumption via vectors related to "backtracking into the phrase," a different vulnerability than CVE-2014-0477...

CVE-2022-37262

A Regular Expression Denial of Service ReDoS flaw was found in stealjs steal 2.2.4 via the source and sourceWithComments variable in main.js...

CVE-2022-31781

Apache Tapestry up to version 5.8.1 is vulnerable to Regular Expression Denial of Service ReDoS in the way it handles Content Types. Specially crafted Content Types may cause catastrophic backtracking, taking exponential time to complete. Specifically, this is about the regular expression used on...

CVE-2024-39316

Rack is a modular Ruby web server interface. Starting in version 3.1.0 and prior to version 3.1.5, Regular Expression Denial of Service ReDoS vulnerability exists in the Rack::Request::Helpers module when parsing HTTP Accept headers. This vulnerability can be exploited by an attacker sending...

CVE-2026-21868

Flag Forge is a Capture The Flag CTF platform. Versions 2.3.2 and below have a Regular Expression Denial of Service ReDoS vulnerability in the user profile API endpoint /api/user/username. The application constructs a regular expression dynamically using unescaped user input the username paramete...

CVE-2024-41655

TF2 Item Format helps users format TF2 items to the community standards. Versions of tf2-item-format since at least 4.2.6 and prior to 5.9.14 are vulnerable to a Regular Expression Denial of Service ReDoS attack when parsing crafted user input. This vulnerability can be exploited by an attacker t...