Search vulnerabilities

Use the Query Builder to create your own search query, or check out the documentation to learn the search syntax.

Results 620

Export CSV
CVE-2022-21680

Cubic catastrophic backtracking (ReDoS) in marked

Marked is a markdown parser and compiler. Prior to version 4.0.10, the regular expression `block.def` may cause catastrophic backtracking against some strings and lead to a regular expression denial of service (ReDoS). Anyone who runs untrusted markdown through a vulnerable version of marked and does not use a worker with a time limit may be affected. This issue is patched in version 4.0.10. As a workaround, avoid running untrusted markdown through marked or run marked on a worker thread and set a reasonable time limit to prevent draining resources.

CVSS 3.1 · 7.5 High EPSS 3.0% KEV · Not listed
Vendors
Fedoraproject Marked Project Redhat
Products
Fedora Marked Ceph Storage
CVE-2022-21670

Uncontrolled Resource Consumption in markdown-it

markdown-it is a Markdown parser. Prior to version 1.3.2, special patterns with length greater than 50 thousand characterss could slow down the parser significantly. Users should upgrade to version 12.3.2 to receive a patch. There are no known workarounds aside from upgrading.

CVSS 3.1 · 5.3 Medium EPSS 2.4% KEV · Not listed
Vendors
Markdown-it Project
Products
Markdown-it
CVE-2026-45409

Internationalized Domain Names in Applications (IDNA): Specially crafted inputs to idna.encode() can bypass CVE-2024-3651 fix

Internationalized Domain Names in Applications (IDNA) for Python provides support for Internationalized Domain Names in Applications (IDNA) and Unicode IDNA Compatibility Processing. In versions prior to 3.15, payloads such as `"\u0660" * N` or `"\u30fb" * N + "\u6f22"` utilize the `valid_contexto` function prior to length rejection, and for high values of `N` will take a long time to process. This is the same issue as CVE-2024-3651, however the original remediation in 2024 was not a complete fix. A specially crafted argument to the `idna.encode()` function could consume significant resources. This may lead to a denial-of-service. Starting in version 3.14, the function rejects long inputs as soon as practicable prior to any further processing to minimize resource consumption. In version 3.15, this approach was extended to lesser used alternate functions (i.e. per-label conversions and codec support). A workaround is available. Domain names cannot exceed 253 characters in length. If this length limit is enforced prior to passing the domain to the `idna.encode()` function, it should no longer consume significant resources. This is triggered by arbitrarily large inputs that would not occur in normal usage, but may be passed to the library assuming there is no preliminary input validation by the higher-level application.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Vendors
Kjd
Products
Idna Internationalized Domain Names In Applications
CVE-2026-47138

Parse Server: Pre-authentication denial of service via client version header regex backtracking

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.77 and 9.9.1-alpha.1, an unauthenticated attacker who knows a publicly-known Parse Application ID can submit a single HTTP request whose client SDK version field contains adversarial input that triggers polynomial backtracking in a request-header parser. The parsing runs before session authentication and before rate limiting on every /parse/* request, so the request consumes seconds to minutes of synchronous CPU on a Node.js worker before any access control evaluates it. A small number of concurrent requests can saturate a worker; a single large request via the body-field variant can pin a worker for minutes. Production deployments running the default configuration are affected. This issue has been patched in versions 8.6.77 and 9.9.1-alpha.1.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Parse Community
Products
Parse Server
CVE-2026-42567

Svelte: ReDoS in `<svelte:element>` Tag Validation

Svelte is a performance oriented web framework. From version 5.51.5 to before version 5.55.7, an internal regex in the Svelte runtime can take exponential time to test in <svelte:element this={tag}></svelte:element>. This issue has been patched in version 5.55.7.

CVSS 4.0 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Svelte
Products
Svelte
CVE-2026-41848

Spring Framework Denial of Service via AntPathMatcher

Applications may be vulnerable to a Regular Expression Denial of Service (ReDoS) attack if an attacker is able to provide a pattern which is then directly or indirectly supplied to one of the following methods in AntPathMatcher: match(String pattern, String path), matchStart(String pattern, String path), extractUriTemplateVariables(String pattern, String path). Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.

CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed
Vendors
Spring Vmware
Products
Spring Framework Spring Framework
CVE-2026-52778

YesWiki has Unsafe eval() in Formula Calculator - Remote Code Execution (RCE) & Denial of Service (DoS)

YesWiki is a wiki system written in PHP. Prior to version 4.6.6, an unsafe execution vulnerability exists in the Bazar form field calculator (CalcField.php) of YesWiki. The application attempts to sanitize user-defined mathematical formulas using a complex recursive regular expression before passing them to the PHP eval() function. This implementation is inherently flawed: it is vulnerable to Regular Expression Denial of Service (ReDoS / Stack Overflow) which can crash the server, and it creates a high-risk architecture where any logic bypass directly results in arbitrary PHP code execution. Version 4.6.6 patches the issue.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Yeswiki
Products
Yeswiki
CVE-2026-11478

kokke tiny-regex-c Pattern re.c matchstar redos

A flaw has been found in kokke tiny-regex-c up to f2632c6d9ed25272987471cdb8b70395c2460bdb. This vulnerability affects the function matchstar of the file re.c of the component Pattern Handler. This manipulation causes inefficient regular expression complexity. The attack is restricted to local execution. The exploit has been published and may be used. This product adopts a rolling release strategy to maintain continuous delivery. Therefore, version details for affected or updated releases cannot be specified. The project was informed of the problem early through an issue report but has not responded yet.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed
Vendors
Kokke
Products
Tiny-regex-c
CVE-2026-8888

CVE-2026-8888

Version 3.0.7 of the Securly Chrome Extension downloads config.json over HTTP and compiles server-provided patterns as JavaScript regular expressions via new RegExp() without complexity validation. An on-path attacker can inject specific patterns to cause catastrophic backtracking, resulting in denial of service on all browsing.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Securly
Products
Securly Securly Chrome Extension
CVE-2026-10692

johnhuang316 code-index-mcp search_code_advanced is_safe_regex_pattern redos

A weakness has been identified in johnhuang316 code-index-mcp up to 2.14.0. Affected is the function is_safe_regex_pattern of the component search_code_advanced. Executing a manipulation of the argument regex can lead to inefficient regular expression complexity. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 2.14.1 is able to address this issue. This patch is called 25bc02fac74051ddae15ce79e952f00211b1ea6b. Upgrading the affected component is recommended.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Johnhuang316
Products
Code-index-mcp
CVE-2026-10691

wonderwhy-er DesktopCommanderMCP start_search search-manager.ts redos

A security flaw has been discovered in wonderwhy-er DesktopCommanderMCP up to 0.2.38. This impacts an unknown function of the file src/search-manager.ts of the component start_search. Performing a manipulation of the argument SearchResult[] results in inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 0.2.39 will fix this issue. The patch is named 4ce845f8749b6a159b57b38dcc3357f7222a8078. It is suggested to upgrade the affected component.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Wonderwhy-er
Products
Desktopcommandermcp
CVE-2026-10291

Enderfga claw-orchestrator Session Grep Endpoint embedded-server.ts validateRegex redos

A security vulnerability has been detected in Enderfga claw-orchestrator up to 3.7.0. The impacted element is the function validateRegex of the file claw-orchestrator/src/embedded-server.ts of the component Session Grep Endpoint. The manipulation of the argument body.pattern leads to inefficient regular expression complexity. The attack may be initiated remotely. Upgrading to version 3.7.1 is sufficient to resolve this issue. The identifier of the patch is 3f970a974c65a94555c25af9f2796f11315e4584. It is recommended to upgrade the affected component.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Enderfga
Products
Claw-orchestrator
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 combination with the use_regex flag. This vulnerability is fixed in 2.4.33 and 3.1.2.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Nautobot Networktocode
Products
Nautobot Nautobot
CVE-2026-23956

seroval affected by Denial of Service via RegExp serialization

seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 0.2.0 through 1.4.0, overriding RegExp serialization with extremely large patterns can exhaust JavaScript runtime memory during deserialization. Additionally, overriding RegExp serialization with patterns that trigger catastrophic backtracking can lead to ReDoS (Regular Expression Denial of Service). This issue has been fixed in version 1.4.1.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Lxsmnsyc
Products
Seroval
CVE-2026-44425

ShellHub: Crash-DoS via field injection in filter and sort-by parameters

ShellHub is a centralized SSH gateway. Prior to 0.24.2, the device list endpoint accepts user-controlled identifiers in the the name field of each filter property in the base64-encoded filter query parameter and the sort_by query parameter, which are then passed directly as BSON/SQL keys in the database layer without validation. Any authenticated user can craft payloads that cause the aggregation / query to fail and the API to return HTTP 500 with no body, with no rate limiting applied. This vulnerability is fixed in 0.24.2.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed
Vendors
Shellhub Shellhub-io
Products
Shellhub Shellhub
CVE-2026-8159

multiparty vulnerable to ReDoS via filename parsing

multiparty@4.2.3 and lower versions are vulnerable to denial of service via regular expression backtracking in the Content-Disposition filename parameter parser. A crafted multipart upload with a long header value can cause regex matching to take seconds, blocking the event loop. Impact: any service accepting multipart uploads via multiparty is affected. Workarounds: limiting upload sizes at the proxy or gateway layer reduces but does not eliminate the attack surface, since a small header of around 8 KB is sufficient to trigger the vulnerable backtracking. Upgrade to multiparty@4.3.0 or higher.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Multiparty Pillarjs
Products
Multiparty Multiparty
CVE-2025-70034

ssh2: ssh2: Denial of Service due to inefficient regular expression complexity

An issue pertaining to CWE-1333: Inefficient Regular Expression Complexity (4.19) was discovered in mscdex ssh2 v1.17.0.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Mscdex
Products
Ssh2
CVE-2026-41040

Regular Expression Denial of Service in GROWI

GROWI provided by GROWI, Inc. is vulnerable to a regular expression denial of service (ReDoS) via a crafted input string.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Growi
Products
Growi
CVE-2023-3994

Inefficient Regular Expression Complexity in GitLab

An issue has been discovered in GitLab CE/EE affecting all versions starting from 9.3 before 16.0.8, all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. A Regular Expression Denial of Service was possible via sending crafted payloads which use ProjectReferenceFilter to the preview_markdown endpoint.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Gitlab
Products
Gitlab
CVE-2026-39320

Signal K Server has an Unauthenticated Regular Expression Denial of Service (ReDoS) via WebSocket Subscription Paths

Signal K Server is a server application that runs on a central hub in a boat. Versions prior to 2.25.0 are vulnerable to an unauthenticated Regular Expression Denial of Service (ReDoS) attack within the WebSocket subscription handling logic. By injecting unescaped regex metacharacters into the `context` parameter of a stream subscription, an attacker can force the server's Node.js event loop into a catastrophic backtracking loop when evaluating long string identifiers (like the server's self UUID). This results in a total Denial of Service (DoS) where the server CPU spikes to 100% and becomes completely unresponsive to further API or socket requests. Version 2.25.0 contains a fix.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Signalk
Products
Signal K Server Signalk-server