CVE-2023-45813

    Dashboard / Vulnerabilities / CVE-2023-45813

    CVE-2023-45813

    Published: 18 Oct 2023Last Modified: 6 Oct 2026

    Summary: Inefficient Regular Expression Complexity in TorBot

    Details: Torbot is an open source tor network intelligence tool. In affected versions the `torbot.modules.validators.validate_link 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. An attacker can use a well-crafted URL argument to exploit the vulnerability in the regular expression and cause a Denial of Service on the system. The validators file has been removed in version 4.0.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45813.json, https://github.com/DedSecInside/TorBot/security/advisories/GHSA-72qw-p7hh-m3ff, https://nvd.nist.gov/vuln/detail/CVE-2023-45813, https://github.com/DedSecInside/TorBot/commit/ef6e06bc7785355b1701d5524eb4550441086ac4

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -ef6e06bc7785355b1701d5524eb4550441086ac4

    Affected versions

    0.11.0
    0.11.3
    0.11.2
    0.11.1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2023-45813 | CVE-DB