CVE-2026-14895

String::Util versions before 1.36 for Perl are susceptible to a regular expression denial of service. The trim and rtrim functions stripped trailing whitespace with s/\s$//u. Because \s matches greedily and the $ anchor fails whenever a non-whitespace character follows the whitespace, the regex...

CVE-2026-14895

String::Util versions before 1.36 for Perl are susceptible to a regular expression denial of service. The trim and rtrim functions stripped trailing whitespace with s/\s$//u. Because \s matches greedily and the $ anchor fails whenever a non-whitespace character follows the whitespace, the regex...

PYSEC-2026-1980 Hugging Face Transformers vulnerable to Regular Expression Denial of Service (ReDoS) in the AdamWeightDecay optimizer

The huggingface/transformers library, versions prior to 4.53.0, is vulnerable to Regular Expression Denial of Service ReDoS in the AdamWeightDecay optimizer. The vulnerability arises from the douseweightdecay method, which processes user-controlled regular expressions in the includeinweightdecay...

PYSEC-2026-1275 copyparty allows Regex Denial of Service (ReDoS) in the upload listing

Summary The filter parameter for the "Recent uploads" page allows arbitrary Regexes. If this feature is enabled which is the default, an attacker can craft a filter which deadlocks the server. PoC https://127.0.0.1:3923/?ru&filter=.++x Impact The server becomes fully inaccessible for a long time...

PYSEC-2026-1228 Calibre Web and Autocaliweb have a ReDoS vulnerability

ReDoS in stripwhitespaces function in cps/stringhelper.py in Calibre Web and Autocaliweb allows unauthenticated remote attackers to cause denial of service via specially crafted username parameter that triggers catastrophic backtracking during login. This issue affects Calibre Web: 0.6.24...

PYSEC-2026-1360 FastAPI Guard has a regex bypass

Summary The regular expression patched to mitigate the ReDoS vulnerability by limiting the length of string fails to catch inputs that exceed this limit. Details In version 3.0.1, you can find a commit like the one in the link below, which was made to prevent ReDoS...

PYSEC-2026-1359 fastapi-guard is vulnerable to ReDoS through inefficient regex

Summary fastapi-guard detects penetration attempts by using regex patterns to scan incoming requests. However, some of the regex patterns used in detection are extremely inefficient and can cause polynomial complexity backtracks when handling specially crafted inputs. It is not as severe as...

GO-2026-5874 Rancher Fleet has Unauthenticated Webhook: Regex Injection via Unsanitized Repository URL Components in github.com/rancher/fleet

Rancher Fleet has Unauthenticated Webhook: Regex Injection via Unsanitized Repository URL Components in github.com/rancher/fleet...

PYSEC-2026-1384 Flask-CORS improper regex path matching vulnerability

corydolphin/flask-cors version 5.0.1 contains an improper regex path matching vulnerability. The plugin prioritizes longer regex patterns over more specific ones when matching paths, which can lead to less restrictive CORS policies being applied to sensitive endpoints. This mismatch in regex...

H2O Vulnerable to Denial of Service (DoS) via `/3/ParseSetup` Endpoint

A vulnerability in the /3/ParseSetup endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service DoS attack. The endpoint applies a user-specified regular expression to a user-controllable string. This can be exploited by an attacker to cause inefficient regular expression complexity,...

H2O Vulnerable to Denial of Service (DoS) via `/3/Parse` Endpoint

A vulnerability in the /3/Parse endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service DoS attack. The endpoint uses a user-specified string to construct a regular expression, which is then applied to another user-specified string. By sending multiple simultaneous requests, an...

PYSEC-2026-1445 H2O Vulnerable to Denial of Service (DoS) via `/3/Parse` Endpoint

A vulnerability in the /3/Parse endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service DoS attack. The endpoint uses a user-specified string to construct a regular expression, which is then applied to another user-specified string. By sending multiple simultaneous requests, an...

PYSEC-2026-1674 MobSF Partial Denial of Service (DoS)

Partial Denial of Service DoS Product: MobSF Version: v4.2.9 CWE-ID: CWE-1287: Improper Validation of Specified Type of Input CVSS vector v.4.0: 6.9 AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS vector v.3.1: 6.5 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Description: DoS in the Scans...

Inefficient Regular Expression Complexity in langflow

A vulnerability classified as problematic was found in Langflow up to 1.0.18. Affected by this vulnerability is an unknown functionality of the file \src\backend\base\langflow\interface\utils.py of the component HTTP POST Request Handler. The manipulation of the argument remainingtext leads to...

TorBot vulnerable to Inefficient Regular Expression Complexity in validate_link

SummaryThe torbot.modules.validators.validatelink function uses the python-validators URL validation regex. This particular regular expression has an exponential complexity which allows an attacker to cause an application crash using a well-crafted argument...

PYSEC-2026-1969 TorBot vulnerable to Inefficient Regular Expression Complexity in validate_link

Summary The torbot.modules.validators.validatelink function uses the python-validators URL validation regex. This particular regular expression has an exponential complexity which allows an attacker to cause an application crash using a well-crafted argument.. Details...

PT-2026-56275

Name of the Vulnerable Software and Affected Versions String::Util versions prior to 1.36 Description String::Util for Perl is susceptible to a regular expression denial of service. The trim and rtrim functions use a regular expression to strip trailing whitespace. Because the s pattern matches...

Regular Expression Denial of Service (ReDoS)

Overview vllm is an A high-throughput and memory-efficient inference and serving engine for LLMs Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS via the structuredoutputs.regex parameter, which allows user-supplied regular expressions to be passed...

PYSEC-2026-2304

vLLM is a high-throughput and memory-efficient inference and serving engine for LLMs. Prior to 0.24.0, the structuredoutputs.regex API parameter passes a user-supplied regular expression string directly to the grammar compiler backends with no compilation timeout; in the xgrammar backend the stri...

CVE-2026-55574

vLLM is a high-throughput and memory-efficient inference and serving engine for LLMs. Prior to 0.24.0, the structuredoutputs.regex API parameter passes a user-supplied regular expression string directly to the grammar compiler backends with no compilation timeout; in the xgrammar backend the stri...