UBUNTU-CVE-2026-53550

js-yaml is a JavaScript YAML parser and dumper. Prior to 4.2.0, a crafted YAML document can trigger algorithmic CPU exhaustion in js-yaml merge-key processing by repeating the same alias many times in a merge sequence. This causes quadratic parse-time behavior relative to input size and can block...

CVE-2026-53550 js-yaml: Quadratic-complexity DoS in merge key handling via repeated aliases

js-yaml is a JavaScript YAML parser and dumper. Prior to 4.2.0, a crafted YAML document can trigger algorithmic CPU exhaustion in js-yaml merge-key processing by repeating the same alias many times in a merge sequence. This causes quadratic parse-time behavior relative to input size and can block...

Security Bulletin: IBM App Connect Enterprise is vulnerable to Uncontrolled Recursion due to Node.js module yaml (CVE-2026-33532)

Summary IBM App Connect Enterprise Connector Discovery and OpenAPI Editor, IBM App Connect Enterprise Discovery Connectors and IBM App Connect Enterprise runtime are vulnerable to Uncontrolled Recursion due to Node.js module yaml. Vulnerability Details CVEID:CVE-2026-33532 DESCRIPTION: yaml is a...

Security Bulletin: IBM Datapower Operations Dashboard is vulnerable to Prototype Pollution CVE-2025-64718

Summary js-yaml is used by the IBM Datapower Operations Dashboard in their parsing functionality Vulnerability Details CVEID:CVE-2025-64718 DESCRIPTION: js-yaml is a JavaScript YAML parser and dumper. In js-yaml before 4.1.1 and 3.14.2, it's possible for an attacker to modify the prototype of the...

GHSA-9FRC-8383-795M Symfony's YAML Parser has a ReDoS via Catastrophic Backtracking in Parser::cleanup() Regex

Description Symfony\Component\Yaml\Parser::cleanup strips the optional %YAML directive header, leading comments, and document start/end markers before parsing. The original regexes contained overlapping quantifiers, most notably '^%YAML: \d.+.\nu', whose \d.+ and . overlap on the dot, that exhibi...

Symfony's YAML Parser has a ReDoS via Catastrophic Backtracking in Parser::cleanup() Regex

Description Symfony\Component\Yaml\Parser::cleanup strips the optional %YAML directive header, leading comments, and document start/end markers before parsing. The original regexes contained overlapping quantifiers, most notably '^%YAML: \d.+.\nu', whose \d.+ and . overlap on the dot, that exhibi...

Symfony hardened the parser when handling untrusted input

Description Symfony\Component\Yaml\Parser is the entry point for parsing YAML strings into PHP values via Yaml::parse. When the parser is exposed to attacker-controlled input, deeply nested mappings or sequences cause both the block-level Parser::parseBlock and inline Inline::parseSequence /...

PT-2026-44150

Description SymfonyComponentYamlParser::cleanup strips the optional %YAML directive header, leading comments, and document start/end markers before parsing. The original regexes contained overlapping quantifiers, most notably '^%YAML: d.+. u', whose d.+ and . overlap on the dot, that exhibit...

PT-2026-44146

Description SymfonyComponentYamlParser is the entry point for parsing YAML strings into PHP values via Yaml::parse. When the parser is exposed to attacker-controlled input, deeply nested mappings or sequences cause both the block-level Parser::parseBlock and inline Inline::parseSequence /...

PT-2026-44149

Description SymfonyComponentYamlParser resolves YAML aliases anchor during parsing. Aliases that reference collections arrays, stdClass, TaggedValue-wrapped collections can themselves point to other collections containing aliases, creating exponential expansion at resolution time. A small input c...

Uncontrolled Recursion

Overview Affected versions of this package are vulnerable to Uncontrolled Recursion via Unbounded Recursion in Nested Blocks, Sequences, and Mappings. Symfony\Component\Yaml\Parser is the entry point for parsing YAML strings into PHP values via Yaml::parse. When the parser is exposed to...

CVE-2026-5089

YAML::Syck versions before 1.38 for Perl has an out-of-bounds read. The base60 sexagesimal parsing code in perlsyck.h has a buffer underflow bug in both intbase60 and floatbase60 handlers. When processing the leftmost segment of a colon-separated value e.g., the 1 in 1:30:45, the inner while loop...

Security Bulletin: Multiple vulnerabilities in IBM Aspera Enterprise WebApps

Summary Multiple vulnerabilities were addressed in IBM Aspera Enterprise WebApps version 1.0.2 Vulnerability Details CVEID:CVE-2025-64718 DESCRIPTION: js-yaml is a JavaScript YAML parser and dumper. In js-yaml before 4.1.1 and 3.14.2, it's possible for an attacker to modify the prototype of the...

Security Bulletin: IBM App Connect Enterprise Certified Container operands are vulnerable to loss of confidentiality (CVE-2025-64718)

Summary Node.js module js-yaml is used by IBM App Connect Enterprise Certified Container for parsing YAML data. IBM App Connect Enterprise Certified Container operands are vulnerable to loss of confidentiality. This bulletin provides patch information to address the reported vulnerability in...

JLSEC-2026-23

The SingleDocParser::HandleNode function in yaml-cpp aka LibYaml-C++ 0.5.3 allows remote attackers to cause a denial of service stack consumption and application crash via a crafted YAML file...

SUSE CVE-2026-33532

yaml is a YAML parser and serialiser for JavaScript. Parsing a YAML document with a version of yaml on the 1.x branch prior to 1.10.3 or on the 2.x branch prior to 2.8.3 may throw a RangeError due to a stack overflow. The node resolution/composition phase uses recursive function calls without a...

CVE-2026-33532

yaml is a YAML parser and serialiser for JavaScript. Parsing a YAML document with a version of yaml on the 1.x branch prior to 1.10.3 or on the 2.x branch prior to 2.8.3 may throw a RangeError due to a stack overflow. The node resolution/composition phase uses recursive function calls without a...

CVE-2026-33532

yaml is a YAML parser and serialiser for JavaScript. Parsing a YAML document with a version of yaml on the 1.x branch prior to 1.10.3 or on the 2.x branch prior to 2.8.3 may throw a RangeError due to a stack overflow. The node resolution/composition phase uses recursive function calls without a...

CVE-2026-33532 yaml is vulnerable to Stack Overflow via deeply nested YAML collections

yaml is a YAML parser and serialiser for JavaScript. Parsing a YAML document with a version of yaml on the 1.x branch prior to 1.10.3 or on the 2.x branch prior to 2.8.3 may throw a RangeError due to a stack overflow. The node resolution/composition phase uses recursive function calls without a...

DEBIAN-CVE-2026-4177

YAML::Syck versions through 1.36 for Perl has several potential security vulnerabilities including a high-severity heap buffer overflow in the YAML emitter. The heap overflow occurs when class names exceed the initial 512-byte allocation. The base64 decoder could read past the buffer end on...