VYPR

CWE-1333

Inefficient Regular Expression Complexity

BaseDraftLikelihood: High

Description

The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.

Hierarchy (View 1000)

Parents

Children

none

Related attack patterns (CAPEC)

CAPEC-492

CVEs mapped to this weakness (532)

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  • CVE-2020-26309HigOct 26, 2024
    risk 0.50cvss —epss 0.00

    Validate.js provides a declarative way of validating javascript objects. Versions 0.11.3 and prior contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, it is unknown if any patches are available.

  • CVE-2020-26306HigOct 26, 2024
    risk 0.50cvss —epss 0.00

    Knwl.js is a Javascript library that parses through text for dates, times, phone numbers, emails, places, and more. Versions 1.0.2 and prior contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no…

  • CVE-2026-93761HigSep 18, 2026
    risk 0.49cvss 7.5epss 0.00

    An inefficient regular expression complexity issue in the in-memory query evaluation component of the Mongoid library may allow an unauthenticated party to cause excessive processing within an embedding application process. Applications that place user-supplied text into a…

  • CVE-2026-84642HigSep 1, 2026
    risk 0.49cvss 7.5epss 0.00

    The values of the mail.allowed_attachment_hostnames advanced config setting were used in a regular expression without escaping. For some possible valid hostnames, this could allow certain unintended hostnames to also match and serve remote attachments. This vulnerability was…

  • CVE-2026-66766HigAug 25, 2026
    risk 0.49cvss 7.5epss 0.00

    SAP S/4HANA (Private Cloud) uses a third-party component that contains a Regular Expression Denial of Service (ReDoS) vulnerability. An unauthenticated attacker could supply specially crafted input that triggers excessive processing within the affected functionality. Successful…

  • CVE-2026-8888HigJun 3, 2026
    risk 0.49cvss 7.5epss 0.00

    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…

  • CVE-2026-41040HigApr 23, 2026
    risk 0.49cvss 7.5epss 0.00

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

  • CVE-2026-35611HigApr 7, 2026
    risk 0.49cvss 7.5epss 0.00

    Addressable is an alternative implementation to the URI implementation that is part of Ruby's standard library. From 2.3.0 to before 2.9.0, within the URI template implementation in Addressable, two classes of URI template generate regular expressions vulnerable to catastrophic…

  • CVE-2026-4867HigMar 26, 2026
    risk 0.49cvss 7.5epss 0.01

    Impact: A bad regular expression is generated any time you have three or more parameters within a single segment, separated by something that is not a period (.). For example, /:a-:b-:c or /:a-:b-:c-:d. The backtrack protection added in [email protected] only prevents…

  • CVE-2025-70030HigMar 9, 2026
    risk 0.49cvss 7.5epss 0.00

    An issue pertaining to CWE-1333: Inefficient Regular Expression Complexity (4.19) was discovered in Sunbird-Ed SunbirdEd-portal v1.13.4.

  • CVE-2025-70034HigMar 9, 2026
    risk 0.49cvss 7.5epss 0.00

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

  • CVE-2026-1388HigFeb 25, 2026
    risk 0.49cvss 7.5epss 0.00

    GitLab has remediated an issue in GitLab CE/EE affecting all versions from 9.2 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that could have allowed an unauthenticated user to cause regular expression denial of service by sending specially crafted input to a merge…

  • CVE-2024-58340HigJan 12, 2026
    risk 0.49cvss 7.5epss 0.00

    LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service (ReDoS) vulnerability in the MRKLOutputParser.parse() method (libs/langchain/langchain/agents/mrkl/output_parser.py). The parser applies a backtracking-prone regular expression when…

  • CVE-2026-21868HigJan 8, 2026
    risk 0.49cvss 7.5epss 0.00

    Flag Forge is a Capture The Flag (CTF) platform. Versions 2.3.2 and below have a Regular Expression Denial of Service (ReDoS) vulnerability in the user profile API endpoint (/api/user/[username]). The application constructs a regular expression dynamically using unescaped user…

  • CVE-2025-61581HigOct 16, 2025
    risk 0.49cvss 7.5epss 0.01

    ** UNSUPPORTED WHEN ASSIGNED ** Inefficient Regular Expression Complexity vulnerability in Apache Traffic Control. This issue affects Apache Traffic Control: all versions. People with access to the management interface of the Traffic Router component could specify malicious…

  • CVE-2025-33090HigAug 18, 2025
    risk 0.49cvss 7.5epss 0.00

    IBM Concert Software 1.0.0 through 1.1.0 could allow a remote attacker to cause a denial of service using a specially crafted regular expression that would cause excessive resource consumption.

  • CVE-2024-13926HigApr 19, 2025
    risk 0.49cvss 7.5epss 0.00

    The WP-Syntax WordPress plugin through 1.2 does not properly handle input, allowing an attacker to create a post containing a large number of tags, thereby exploiting a catastrophic backtracking issue in the regular expression processing to cause a DoS.

  • CVE-2023-0881HigMar 31, 2025
    risk 0.49cvss 7.5epss 0.00

    Running DDoS on tcp port 22 will trigger a kernel crash. This issue is introduced by the backport of a commit regarding nft_lookup without the subsequent fixes that were introduced after this commit. The resolution of this CVE introduces those commits to the linux-bluefield…

  • CVE-2024-8998HigMar 20, 2025
    risk 0.49cvss 7.5epss 0.01

    A Regular Expression Denial of Service (ReDoS) vulnerability exists in lunary-ai/lunary version git f07a845. The server uses the regex /{.*?}/ to match user-controlled strings. In the default JavaScript regex engine, this regex can take polynomial time to match certain crafted…

  • CVE-2024-8789HigMar 20, 2025
    risk 0.49cvss 7.5epss 0.01

    Lunary-ai/lunary version git 105a3f6 is vulnerable to a Regular Expression Denial of Service (ReDoS) attack. The application allows users to upload their own regular expressions, which are then executed on the server side. Certain regular expressions can have exponential runtime…