Common Weakness Enumeration

CWE-1333

Allowed

Inefficient Regular Expression Complexity

Abstraction: Base · Status: Draft

API response cwe.mitre.org

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

725 vulnerabilities reference this CWE, most recent first.

CVE-2021-3807 (GCVE-0-2021-3807)

Vulnerability from cvelistv5 – Published: 2021-09-17 00:00 – Updated: 2024-08-03 17:09
VLAI
Title
Inefficient Regular Expression Complexity in chalk/ansi-regex
Summary
ansi-regex is vulnerable to Inefficient Regular Expression Complexity
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
chalk chalk/ansi-regex Affected: unspecified , < 6.0.1 (custom)
Affected: unspecified , < 5.0.1 (custom)
Unaffected: 5.0.1
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CVE-2021-3804 (GCVE-0-2021-3804)

Vulnerability from cvelistv5 – Published: 2021-09-17 06:15 – Updated: 2024-08-03 17:09
VLAI
Title
Inefficient Regular Expression Complexity in nervjs/taro
Summary
taro is vulnerable to Inefficient Regular Expression Complexity
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
nervjs nervjs/taro Affected: unspecified , ≤ 3.3.8 (custom)
Create a notification for this product.
Show details on NVD website
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CVE-2021-3803 (GCVE-0-2021-3803)

Vulnerability from cvelistv5 – Published: 2021-09-17 00:00 – Updated: 2024-08-03 17:09
VLAI
Title
Inefficient Regular Expression Complexity in fb55/nth-check
Summary
nth-check is vulnerable to Inefficient Regular Expression Complexity
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
fb55 fb55/nth-check Affected: unspecified , < 2.0.1 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-3801 (GCVE-0-2021-3801)

Vulnerability from cvelistv5 – Published: 2021-09-15 12:40 – Updated: 2024-08-03 17:09
VLAI
Title
Inefficient Regular Expression Complexity in prismjs/prism
Summary
prism is vulnerable to Inefficient Regular Expression Complexity
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
prismjs prismjs/prism Affected: unspecified , ≤ 1.24.1 (custom)
Create a notification for this product.
Show details on NVD website
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CVE-2021-3795 (GCVE-0-2021-3795)

Vulnerability from cvelistv5 – Published: 2021-09-15 16:23 – Updated: 2024-08-03 17:09
VLAI
Title
Inefficient Regular Expression Complexity in sindresorhus/semver-regex
Summary
semver-regex is vulnerable to Inefficient Regular Expression Complexity
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
sindresorhus sindresorhus/semver-regex Affected: unspecified , < 4.0.1 (custom)
Affected: unspecified , < 3.1.3 (custom)
Unaffected: 3.1.3
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-3794 (GCVE-0-2021-3794)

Vulnerability from cvelistv5 – Published: 2021-09-15 12:25 – Updated: 2024-08-03 17:09
VLAI
Title
Inefficient Regular Expression Complexity in vuelidate/vuelidate
Summary
vuelidate is vulnerable to Inefficient Regular Expression Complexity
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
vuelidate vuelidate/vuelidate Affected: unspecified , ≤ 2.0.0-alpha.25 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-3777 (GCVE-0-2021-3777)

Vulnerability from cvelistv5 – Published: 2021-09-15 07:15 – Updated: 2024-08-03 17:09
VLAI
Title
Inefficient Regular Expression Complexity in daaku/nodejs-tmpl
Summary
nodejs-tmpl is vulnerable to Inefficient Regular Expression Complexity
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
daaku daaku/nodejs-tmpl Affected: unspecified , < 1.0.5 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-3765 (GCVE-0-2021-3765)

Vulnerability from cvelistv5 – Published: 2021-11-02 07:05 – Updated: 2024-08-03 17:09
VLAI
Title
Inefficient Regular Expression Complexity in validatorjs/validator.js
Summary
validator.js is vulnerable to Inefficient Regular Expression Complexity
Severity
5.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
validatorjs validatorjs/validator.js Affected: unspecified , < 13.7.0 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-3749 (GCVE-0-2021-3749)

Vulnerability from cvelistv5 – Published: 2021-08-31 10:36 – Updated: 2024-08-03 17:09
VLAI
Title
Inefficient Regular Expression Complexity in axios/axios
Summary
axios is vulnerable to Inefficient Regular Expression Complexity
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
axios axios/axios Affected: unspecified , ≤ 0.21.1 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-3649 (GCVE-0-2021-3649)

Vulnerability from cvelistv5 – Published: 2021-07-16 13:33 – Updated: 2024-08-03 17:01
VLAI
Title
Inefficient Regular Expression Complexity in chatwoot/chatwoot
Summary
chatwoot is vulnerable to Inefficient Regular Expression Complexity
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
chatwoot chatwoot/chatwoot Affected: unspecified , ≤ 1.11.1 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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Mitigation
Architecture and Design

Use regular expressions that do not support backtracking, e.g. by removing nested quantifiers.

Mitigation
System Configuration

Set backtracking limits in the configuration of the regular expression implementation, such as PHP's pcre.backtrack_limit. Also consider limits on execution time for the process.

Mitigation
Implementation

Do not use regular expressions with untrusted input. If regular expressions must be used, avoid using backtracking in the expression.

Mitigation
Implementation

Limit the length of the input that the regular expression will process.

CAPEC-492: Regular Expression Exponential Blowup

An adversary may execute an attack on a program that uses a poor Regular Expression(Regex) implementation by choosing input that results in an extreme situation for the Regex. A typical extreme situation operates at exponential time compared to the input size. This is due to most implementations using a Nondeterministic Finite Automaton(NFA) state machine to be built by the Regex algorithm since NFA allows backtracking and thus more complex regular expressions.

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