CVE-2026-80206 NLTK 3.10.2 Regular Expression Denial of Service via tgrep

NLTK before 3.10.3 contains a regular expression denial of service ReDoS vulnerability in the tgrep module. The tgrepnodeaction function compiles user-supplied regular expressions embedded in /regex/ pattern nodes and executes them via re.search against tree node labels without any validation or...

CVE-2026-80205 NLTK before 3.10.0 ReDoS via Text.findall() unvalidated regex

NLTK versions before 3.10.0 contain a regular expression denial of service vulnerability in Text.findall and TokenSearcher.findall methods that accept user-supplied regular expressions without validation or timeout. Attackers can supply crafted regex patterns that cause catastrophic backtracking,...

Linux Distros Unpatched Vulnerability : CVE-2026-79770

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Nokogiri versions before 1.19.3 contain regular expression denial of service vulnerabilities in the CSS selector tokenizer affecting string-literal and identifi...

PT-2026-82080

Name of the Vulnerable Software and Affected Versions NLTK versions prior to 3.10.3 Description The tgrep module contains a regular expression denial of service ReDoS issue. The tgrep node action function compiles user-supplied regular expressions within /regex/ pattern nodes and executes them...

CVE-2026-55620

eml_parser is a Python module for parsing EML files. Prior to 3.0.2 , the eml_parser.routing.noparenthesis function in eml_parser/routing.py removes parenthesized CFWS comments from Received: headers using a regex-based fix-point loop with quadratic running time in nesting depth. A single Receive...

CVE-2026-55620 eml_parser: DoS via deeply nested parens in Received headers

emlparser serves as a python module for parsing eml files and returning various information found in the e-mail as well as computed information. Prior to 3.0.2, emlparser.routing.noparenthesis in emlparser/routing.py removes parenthesized CFWS comments from Received: headers with a regex-based...

CVE-2026-79770

Nokogiri versions before 1.19.3 contain regular expression denial of service vulnerabilities in the CSS selector tokenizer affecting string-literal and identifier tokenization. Attackers can inject adversarial CSS selectors into methods like Nodecss, Nodeatcss, and Searchablesearch to cause...

CVE-2026-55536

PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, Browser Server handleconnection checks Chrome extension origins with re.match and the unanchored expression chrome-extension://a-z0-932. Extra trailing characters pass before websocket.accept, allowing startsession commands and...

PraisonAI has a Browser Server WebSocket origin validation bypass via unanchored regex (patch bypass of CVE-2026-40289 / GHSA-8x8f-54wf-vv92)

Summary praisonai/browser/server.py validates incoming WebSocket connections using a Chrome extension Origin check. The regex chrome-extension://a-z0-932 is applied with re.match, which only anchors at the start of the string, not the end. Any Origin header with more than 32 alphanumeric characte...

GHSA-6G6R-Q6GW-W8FG PraisonAI has a Browser Server WebSocket origin validation bypass via unanchored regex (patch bypass of CVE-2026-40289 / GHSA-8x8f-54wf-vv92)

Summary praisonai/browser/server.py validates incoming WebSocket connections using a Chrome extension Origin check. The regex chrome-extension://a-z0-932 is applied with re.match, which only anchors at the start of the string, not the end. Any Origin header with more than 32 alphanumeric characte...

EUVD-2026-65545

PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, Browser Server handleconnection checks Chrome extension origins with re.match and the unanchored expression chrome-extension://a-z0-932. Extra trailing characters pass before websocket.accept, allowing startsession commands and...

CVE-2026-55536

PraisonAI , a multi-agent teams system, contains a patch bypass (of CVE-2026-40289) in its Browser Server _handle_connection() method. The origin validation uses re.match() with the unanchored pattern chrome-extension://[a-z0-9]{32}, so extra trailing characters are ignored, allowing an attacker ...

CVE-2026-55536 Browser Server WebSocket origin validation bypass via unanchored regex (patch bypass of CVE-2026-40289 / GHSA-8x8f-54wf-vv92)

PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, Browser Server handleconnection checks Chrome extension origins with re.match and the unanchored expression chrome-extension://a-z0-932. Extra trailing characters pass before websocket.accept, allowing startsession commands and...

CVE-2026-55536 Browser Server WebSocket origin validation bypass via unanchored regex (patch bypass of CVE-2026-40289 / GHSA-8x8f-54wf-vv92)

PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, Browser Server handleconnection checks Chrome extension origins with re.match and the unanchored expression chrome-extension://a-z0-932. Extra trailing characters pass before websocket.accept, allowing startsession commands and...

EUVD-2026-65528

Nokogiri versions before 1.19.3 contain regular expression denial of service vulnerabilities in the CSS selector tokenizer affecting string-literal and identifier tokenization. Attackers can inject adversarial CSS selectors into methods like Nodecss, Nodeatcss, and Searchablesearch to cause...

CVE-2026-79770

Nokogiri versions before 1.19.3 are vulnerable to ReDoS (Regular Expression Denial of Service) in the CSS selector tokenizer , specifically in string-literal and identifier tokenization. An attacker who can supply adversarial CSS selectors to methods such as Node#css, Node#at_css, or Searchable#s...

CVE-2026-79770 Nokogiri before 1.19.3 ReDoS via CSS selector tokenizer

Nokogiri versions before 1.19.3 contain regular expression denial of service vulnerabilities in the CSS selector tokenizer affecting string-literal and identifier tokenization. Attackers can inject adversarial CSS selectors into methods like Nodecss, Nodeatcss, and Searchablesearch to cause...

USN-8675-1 perl vulnerabilities

It was discovered that Perl incorrectly handled short source addresses in the Socket module. An attacker could possibly use this issue to trigger an out-of-bounds heap read, resulting in information disclosure. CVE-2026-12087 It was discovered that Perl incorrectly handled regular expressions...

USN-8675-1: Perl vulnerabilities

It was discovered that Perl incorrectly handled short source addresses in the Socket module. An attacker could possibly use this issue to trigger an out-of-bounds heap read, resulting in information disclosure. CVE-2026-12087 It was discovered that Perl incorrectly handled regular expressions...

axios: Axios: Client-side Denial of Service via unescaped regex metacharacters in XSRF cookie name

A flaw was found in Axios. A remote attacker, by influencing the XSRF cookie name in a browser environment, could cause the application to construct a regular expression that leads to excessive processing. This can result in a client-side Denial of Service DoS, where the affected browser tab may...