python: Quadratic complexity in os.path.expandvars() with user-controlled template

A vulnerability in Python’s os.path.expandvars function that can cause performance degradation. When processing specially crafted, user-controlled input with nested environment variable patterns, the function exhibits quadratic time complexity, potentially leading to excessive CPU usage and denia...

EUVD-2026-21407

The fix for CVE-2025-68161 https://logging.apache.org/security.htmlCVE-2025-68161 was incomplete: it addressed hostname verification only when enabled via the log4j2.sslVerifyHostName https://logging.apache.org/log4j/2.x/manual/systemproperties.htmllog4j2.sslVerifyHostName system property, but no...

CVE-2026-40087

LangChain is a framework for building agents and LLM-powered applications. Prior to 0.3.84 and 1.2.28, LangChain's f-string prompt-template validation was incomplete in two respects. First, some prompt template classes accepted f-string templates and formatted them without enforcing the same...

CVE-2026-40087 LangChain has incomplete f-string validation in prompt templates

LangChain is a framework for building agents and LLM-powered applications. Prior to 0.3.84 and 1.2.28, LangChain's f-string prompt-template validation was incomplete in two respects. First, some prompt template classes accepted f-string templates and formatted them without enforcing the same...

CVE-2026-40087

LangChain is a framework for building agents and LLM-powered applications. Prior to 0.3.84 and 1.2.28, LangChain's f-string prompt-template validation was incomplete in two respects. First, some prompt template classes accepted f-string templates and formatted them without enforcing the same...

CVE-2026-40087 LangChain has incomplete f-string validation in prompt templates

LangChain is a framework for building agents and LLM-powered applications. Prior to 0.3.84 and 1.2.28, LangChain's f-string prompt-template validation was incomplete in two respects. First, some prompt template classes accepted f-string templates and formatted them without enforcing the same...

CVE-2026-40087

LangChain CVE-2026-40087 affects the f-string prompt-template validation prior to versions 0.3.84 and 1.2.28. The vulnerability arises because DictPromptTemplate and ImagePromptTemplate could accept templates containing attribute access or indexing expressions and evaluate them during formatting,...

EUVD-2026-21063

LangChain is a framework for building agents and LLM-powered applications. Prior to 0.3.84 and 1.2.28, LangChain's f-string prompt-template validation was incomplete in two respects. First, some prompt template classes accepted f-string templates and formatted them without enforcing the same...

Regular Expression Denial of Service (ReDoS)

Overview fast-jwt is a Fast JSON Web Token implementation Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS via the allowedAud, allowedIss, allowedSub, allowedJti, or allowedNonce options when used with RegExp objects and RegExp is configured with nest...

minimatch: Minimatch: Denial of Service via catastrophic backtracking in glob expressions

A flaw was found in minimatch. A remote attacker could exploit this vulnerability by providing a specially crafted glob expression with nested unbounded quantifiers. This could lead to catastrophic backtracking in the V8 JavaScript engine, causing the application to become unresponsive and...

LangChain has incomplete f-string validation in prompt templates

LangChain's f-string prompt-template validation was incomplete in two respects. First, some prompt template classes accepted f-string templates and formatted them without enforcing the same attribute-access validation as PromptTemplate. In particular, DictPromptTemplate and ImagePromptTemplate...

GHSA-926X-3R5X-GFHW LangChain has incomplete f-string validation in prompt templates

LangChain's f-string prompt-template validation was incomplete in two respects. First, some prompt template classes accepted f-string templates and formatted them without enforcing the same attribute-access validation as PromptTemplate. In particular, DictPromptTemplate and ImagePromptTemplate...

minimatch: Minimatch: Denial of Service via catastrophic backtracking in glob expressions

A flaw was found in minimatch. A remote attacker could exploit this vulnerability by providing a specially crafted glob expression with nested unbounded quantifiers. This could lead to catastrophic backtracking in the V8 JavaScript engine, causing the application to become unresponsive and...

CLSA-2026-1775651477 Fix CVE(s): CVE-2026-24484

SECURITY UPDATE: denial-of-service from multi-layer nested MVG-to-SVG conversions - debian/patches/CVE-2026-24484.patch: Add recursion-depth check and throw VectorGraphicsNestedTooDeeply on reaching maximum; prevent crash from unbounded nesting of graphic-context elements. -...

PT-2026-31716

Name of the Vulnerable Software and Affected Versions LangChain versions prior to 0.3.84 and prior to 1.2.28 Description LangChain's f-string prompt-template validation was incomplete, allowing attribute access and indexing expressions in templates for DictPromptTemplate and ImagePromptTemplate...

Regular Expression Denial of Service (ReDoS)

Overview addressable is an is an alternative implementation to the URI implementation that is part of Ruby's standard library. Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS in the URI template matching due to the use of regular expressions with...

CVE-2026-34211

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.36, the @nyariv/sandboxjs parser contains unbounded recursion in the restOfExp function and the lispify/lispifyExpr call chain. An attacker can crash any Node.js process that parses untrusted input by supplying deeply nested expressions...

GO-2026-4808 Nested etcd transactions bypass RBAC authorization checks in go.etcd.io/etcd

Nested etcd transactions bypass RBAC authorization checks in go.etcd.io/etcd...

go-ipld-prime: DAG-CBOR decoder unbounded memory allocation from CBOR headers

The DAG-CBOR decoder uses collection sizes declared in CBOR headers as Go preallocation hints for maps and lists. The decoder does not cap these size hints or account for their cost in its allocation budget, allowing small payloads to cause excessive memory allocation. A CBOR map or list header c...

CVE-2026-34211

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.36, the @nyariv/sandboxjs parser contains unbounded recursion in the restOfExp function and the lispify/lispifyExpr call chain. An attacker can crash any Node.js process that parses untrusted input by supplying deeply nested expressions...