stream-json: pick/ignore/filter/replace filters are O(depth²) on nested input — small crafted JSON blocks the event loop for seconds→minutes (DoS)

Description The path filters pick, ignore, filter, and replace — the library's headline "surgical extraction" feature — recompute the full path string from the nesting stack on every checkable token. Because the stack length equals the current nesting depth, and a checkable token is emitted at...

NPM: stream-json: pick/ignore/filter/replace filters are O(depth²) on nested input — small crafted JSON blocks the event loop for seconds→minutes (DoS)

NPM: stream-json: pick/ignore/filter/replace filters are Odepth² on nested input — small crafted JSON blocks the event loop for seconds→minutes DoS vulnerability discovered by ? in WordPress Npm stream-json versions = 3.4.0...

EUVD-2026-40267

decode-uri-component: Denial of service via exponential decoding of malformed percent-encoded input...

brace-expansion: Brace-expansion: Denial of Service due to exponential-time complexity

A flaw was found in brace-expansion. An attacker can exploit a vulnerability in the expand function by providing a specially crafted string. This string, containing consecutive non-expanding brace groups, can trigger exponential-time complexity, leading to significant CPU consumption and event-lo...

Security Bulletin: SPSS Collaboration and Deployment Services is affected by vulnerabilities in brace-expansion

Summary SPSS Collaboration and Deployment Services is affected by vulnerabilities in brace-expansion. This has been addressed in the remediation section. Vulnerability Details CVEID:CVE-2026-69152 DESCRIPTION: The brace-expansion library generates arbitrary strings containing a common prefix and...

CVE-2026-73569 fast-xml-parser: Repeated DOCTYPE declarations reset entity expansion limits

fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. From 5.9.3 until 5.10.1, src/xmlparser/OrderedObjParser.js processes multiple DOCTYPE declarations within a single XML document and passes each declaration's entities through addInputEntities...

SUSE CVE-2026-69152

The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.18, 2.1.4, 3.0.6, and 5.0.9, expand does not apply maxLength while constructing comma-alternative intermediate arrays or padded sequences, allowing attacker-controlled input to exhaust memo...

brace-expansion: Brace-expansion: Denial of Service due to exponential-time complexity

A flaw was found in brace-expansion. An attacker can exploit a vulnerability in the expand function by providing a specially crafted string. This string, containing consecutive non-expanding brace groups, can trigger exponential-time complexity, leading to significant CPU consumption and event-lo...

brace-expansion: Brace-expansion: Denial of Service due to exponential-time complexity

A flaw was found in brace-expansion. An attacker can exploit a vulnerability in the expand function by providing a specially crafted string. This string, containing consecutive non-expanding brace groups, can trigger exponential-time complexity, leading to significant CPU consumption and event-lo...

AZL-94532 CVE-2026-69152 affecting package nodejs-nodemon 2.0.3-5

The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.18, 2.1.4, 3.0.6, and 5.0.9, expand does not apply maxLength while constructing comma-alternative intermediate arrays or padded sequences, allowing attacker-controlled input to exhaust memo...

brace-expansion: Brace-expansion: Denial of Service due to exponential-time complexity

A flaw was found in brace-expansion. An attacker can exploit a vulnerability in the expand function by providing a specially crafted string. This string, containing consecutive non-expanding brace groups, can trigger exponential-time complexity, leading to significant CPU consumption and event-lo...

brace-expansion: Brace-expansion: Denial of Service due to exponential-time complexity

A flaw was found in brace-expansion. An attacker can exploit a vulnerability in the expand function by providing a specially crafted string. This string, containing consecutive non-expanding brace groups, can trigger exponential-time complexity, leading to significant CPU consumption and event-lo...

brace-expansion: Brace-expansion: Denial of Service due to exponential-time complexity

A flaw was found in brace-expansion. An attacker can exploit a vulnerability in the expand function by providing a specially crafted string. This string, containing consecutive non-expanding brace groups, can trigger exponential-time complexity, leading to significant CPU consumption and event-lo...

brace-expansion: Brace-expansion: Denial of Service due to exponential-time complexity

A flaw was found in brace-expansion. An attacker can exploit a vulnerability in the expand function by providing a specially crafted string. This string, containing consecutive non-expanding brace groups, can trigger exponential-time complexity, leading to significant CPU consumption and event-lo...

Tornado: Quadratic DoS via Repeated Header Coalescing

Summary The HTTPHeaders.add method in Tornado accumulates values using string concatenation when the same header name is repeated. Due to Python string immutability, each concatenation copies the entire string, resulting in On² time complexity. Given Tornado's single event loop architecture, a...

Inefficient Algorithmic Complexity

Overview org.webjars.npm:brace-expansion is a WebJar for brace-expansion. Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity via the expand function. An attacker can cause excessive CPU consumption and block the event loop by supplying a specially crafted strin...

CVE-2026-45822

decode-uri-component through 0.4.1 is vulnerable to denial of service. The decode function splits input on '%' producing N tokens and calls decodeComponents, exhibiting super-linear parsing time: 200 '%ab' tokens takes approximately 0.7s, 700 tokens approximately 6s, and 1400 tokens approximately...

CVE-2026-13149

The CVE-2026-13149 entry concerns the library brace-expansion up to version 5.0.6. The vulnerability is in the expand() function, which exhibits exponential-time complexity proportional to the number of consecutive non-expanding '{}' brace groups. This allows an attacker to craft input that cause...

CVE-2026-13149

brace-expansion through 5.0.6 is vulnerable to denial of service. The expand function exhibits exponential-time complexity in the number of consecutive non-expanding '' brace groups. An attacker who passes a crafted string to expand, directly or transitively, can cause significant CPU consumption...

PT-2026-53825

Name of the Vulnerable Software and Affected Versions decode-uri-component versions 0.4.1 and earlier Description A denial of service issue exists where the decode function splits input based on the '%' character, creating N tokens that are then processed by decodeComponents. This process results...