GHSA-2F54-P244-32Q6 Open WebUI: Any authenticated user can stall a worker via a knowledge-search pattern that backtracks catastrophically

Summary The built-in knowledge search tools let a chat participant choose the pattern used to grep knowledge files. Patterns containing regex metacharacters were compiled with Python's backtracking re engine and run against every line of every reachable file, with no time limit anywhere on that...

Regular Expression Denial of Service (ReDoS)

Overview Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS via the matches, matchesFull, and replaceMatches functions in FHIRPath expression evaluation. An attacker can exhaust system CPU resources by submitting specially crafted regular expressions th...

CVE-2026-15154 Guardrails-detectors: guardrails-detectors: unauthenticated regular-expression denial of service (redos) via detector_params.regex

A flaw was found in guardrails-detectors, a component of Red Hat OpenShift AI. This vulnerability, known as Regular Expression Denial of Service ReDoS, allows a remote attacker to provide specially crafted regular expressions to the public detection API. This can cause catastrophic backtracking,...

CVE-2026-15154

A flaw was found in guardrails-detectors, a component of Red Hat OpenShift AI. This vulnerability, known as Regular Expression Denial of Service ReDoS, allows a remote attacker to provide specially crafted regular expressions to the public detection API. This can cause catastrophic backtracking,...

SUSE CVE-2026-44631

Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue...

CVE-2026-44631

Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue...

ALPINE-CVE-2026-44631

Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue...

CVE-2026-44631 Apache HTTP Server: Heap Underflow in `ap_regname` via Signed Char Overflow

Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue...

EUVD-2026-35095

Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue...

CVE-2026-44631

Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue...

PYSEC-2026-2226

Nautobot is a Network Source of Truth and Network Automation Platform. Prior to 2.4.33 and 3.1.2, Nautobot UI object-bulk-rename endpoints for example, /dcim/interfaces/rename/ were vulnerable to application-wide denial of service via maliciously crafted regular expressions in the find field in...

CVE-2026-44796

Nautobot is a Network Source of Truth and Network Automation Platform. Prior to 2.4.33 and 3.1.2, Nautobot UI object-bulk-rename endpoints for example, /dcim/interfaces/rename/ were vulnerable to application-wide denial of service via maliciously crafted regular expressions in the find field in...

CVE-2026-44796

Nautobot is a Network Source of Truth and Network Automation Platform. Prior to 2.4.33 and 3.1.2, Nautobot UI object-bulk-rename endpoints for example, /dcim/interfaces/rename/ were vulnerable to application-wide denial of service via maliciously crafted regular expressions in the find field in...

CVE-2026-44796 Nautobot: Object bulk rename UI actions vulnerable to denial of service by crafted regular expression (REDoS)

Nautobot is a Network Source of Truth and Network Automation Platform. Prior to 2.4.33 and 3.1.2, Nautobot UI object-bulk-rename endpoints for example, /dcim/interfaces/rename/ were vulnerable to application-wide denial of service via maliciously crafted regular expressions in the find field in...

Astra Linux – Vulnerability in libonig

A NULL pointer dereference in the matchat function in regexec.c in Oniguruma 6.9.2 allows attackers to potentially cause a denial of service by providing a crafted regular expression. Oniguruma vulnerabilities often affect Ruby, as well as common optional libraries used in PHP and Rust...

perl: Integer overflow leading to buffer overflow in Perl_my_setenv()

Perl before 5.26.3 and 5.28.x before 5.28.1 has a buffer overflow via a crafted regular expression that triggers invalid write operations...

perl: Heap-based buffer read overflow in S_grok_bslash_N()

Perl before 5.26.3 has a buffer over-read via a crafted regular expression that triggers disclosure of sensitive information from process memory...

perl: Heap-based buffer overflow in S_handle_regex_sets()

Perl before 5.26.3 and 5.28.0 before 5.28.1 has a buffer overflow via a crafted regular expression that triggers invalid write operations...

perl: Buffer over-read in regular expression parser

A heap buffer overread was found in perl's grokbslashN function, which is used in the compilation of Unicode nodes in regular expressions, possibly leading to crash or dump of memory segments via the error output. An attacker, able to provide a specially crafted regular expression, could look for...

CVE-2026-4744

CVE-2026-4744 is an out-of-bounds read in rizonesoft Notepad3 prior to 6.25.714.1, affecting the scintilla/oniguruma/src modules (regcomp.C). The issue is a parser vulnerability that can lead to remote code execution. Remediation: update Notepad3 to version 6.25.714.1 or later. Exploitation detai...