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TI-2023-24574 Aliases CVE-2023-45813GHSA-72qw-p7hh-m3ff

Inefficient Regular Expression Complexity in TorBot

Priority HIGH 66CWE-1333Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-1333.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00961 61st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed TorBot (DedSecInside): 4.0.0torbot (PyPI): 4.0.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
DedSecInsideTorBotbefore 4.0.04.0.0Patch availableCNA
—torbot (PyPI)before 4.0.04.0.0Patch availableGHSA-72qw-p7hh-m3ff
  • TorBot VendorDedSecInside Affected before 4.0.0 Fixed in 4.0.0 Patch available CNA
  • torbot (PyPI) Vendor— Affected before 4.0.0 Fixed in 4.0.0 Patch available GHSA-72qw-p7hh-m3ff

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:torbot_project:torbot:*:*:*:*:*:*:*:*before 4.0.0VulnerableTorbot Project
cpe:2.3:a:validators_project:validators:0.11.0:*:*:*:*:python:*:*0.11.0VulnerableValidators Project
cpe:2.3:a:validators_project:validators:0.20.0:*:*:*:*:python:*:*0.20.0VulnerableValidators Project
  • cpe:2.3:a:torbot_project:torbot:*:*:*:*:*:*:*:* Versions before 4.0.0 Vulnerable ·Torbot Project
  • cpe:2.3:a:validators_project:validators:0.11.0:*:*:*:*:python:*:* Versions 0.11.0 Vulnerable ·Validators Project
  • cpe:2.3:a:validators_project:validators:0.20.0:*:*:*:*:python:*:* Versions 0.20.0 Vulnerable ·Validators Project

Remediation

  • Fix · CNA TorBot (DedSecInside) Fixed in 4.0.0
  • Fix · GHSA-72qw-p7hh-m3ff torbot (PyPI) Fixed in 4.0.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-45813
  2. 2026-10-03 Alias added: GHSA-72qw-p7hh-m3ff

References

Exploit 1

Patch 1

Advisory 1

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences