Curl Username Password

Description

General

The curl_username_password detector aims at catching curl CLI invocations that embed basic credentials via -u/--user, i.e. username:password, such as:

curl -u admin:abc123 https://192.12.8.1:9200/_cluster/health

Because curl commands are very common in codebases and docs, this detector relies on a strict matcher (CLI option parsing) plus multiple post-validation layers to reduce false positives.

Specifications

This detector focuses on a single pattern:

• The command must be curl

• The credentials must be provided through -u or --user

• The option value must match:

  • username: [a-zA-Z0-9._%+-]{4,150}
  • password: [a-zA-Z0-9!#$%&*+/?@=^_~.>-]{4,128}
  • joined as username:password

The two captured groups are referred to as username and password.

Revoke the secret

This detector catches generic credentials used with curl, so GitGuardian cannot infer which service they authenticate to. To revoke:

1. Identify the target service from the URL and context around the curl command.
2. Rotate/revoke the impacted account credentials in that service.
3. Update any scripts, CI variables, docs, or samples to use safer auth (tokens, vault-managed secrets, or interactive prompting).

Examples

Examples that WILL be caught

- text: |
    curl -k -v -u 'svc_application:AreO42JJ5JY5LFDSa5OU' --upload-file abc.tar.gz https://prd-nexus/repository/application-raw/abc.tar.gz
  username: svc_application
  password: AreO42JJ5JY5LFDSa5OU

- text: |
    curl -s -T index.html "ftp://f31-preview.eohost.com" --user "4689449_GASSANT:abc123"
  username: 4689449_GASSANT
  password: abc123

Examples that WILL NOT be caught

• Missing curl keyword or missing -u/--user

http --auth admin:abc123 GET https://example.com

• Too-short values (username/password must be at least 4 chars)

curl -u adm:abc https://example.com

• Values filtered by common/banlisted patterns (see PostValidators)

curl -u user:[password] https://example.com
curl -u default:env.pw https://example.com

Details for Curl Username Password

• High Recall: False

• Validity Check: False

• Occurrences found for one million commits: 15.17

• Prefixed: False

• PreValidators:

- type: ContentWhitelistPreValidator
  case_sensitive: true
  patterns:
    - curl

- type: ContentWhitelistPreValidator
  case_sensitive: true
  patterns:
    - '-u'
    - '--user'

• Matcher

- type: CLIOptionMatcher
  command_name: curl
  short_option_flag: '-u'
  long_option_flag: '--user'
  option_regex: (?P<username>[a-zA-Z0-9._%+-]{4,150}):(?P<password>[a-zA-Z0-9!#$%&*+/?@=^_`~.>-]{4,128})

• PostValidators

username:
  - type: ContextWindowBanlistPostValidator
    patterns: ['default', 'error', 'invalid']
    window_width: 40
    window_type: 'left'
  - type: AssignmentBanlistPostValidator
    patterns:
      - 'missing'
  - type: CommonValueBanlistPostValidator
  - type: CommonUsernameBanlistPostValidator
  - type: ValueBanlistPostValidator
    patterns:
      - '^none'
      - '1234'
      - ^null
      - ^empty
      - ^user
      - pass
      - ^root
      - ^true
      - ^false
      - ^and
      - ^self
      - ^raw
      - test
      - sample
      - dummy
      - value
      - name
      - email
      - ^form
      - ^\.?request
      - ^before
      - ^string
      - ^await$
      - ^this
      - ^int
      - ^replace
      - ^foo
      - ^change
      - ^disabled
      - ^required
      - \.string$
      - ^django\.
      - ^please
      - ^validated
      - '%s'
      - ^cleaned
      - ^table\.
      - ^driver\.
      - ^args\.
      - ^bool(ean)?
      - ^url
      - credentialsId
      - field
      - ^open
      - callback
      - validator
      - placeholder
      - anonymous
      - class
      - ^get
      - phone
      - swift
      - type
      - label
      - attribute
      - ^html
      - ^attr
      - text
      - nombre
      - ^ask
      - config
      - input
      - ^enter
      - ^login
      - ^token
      - ^throw
      - credential
      - confirmer
      - ^const
      - ^new
      - ^uid
      - model$
      - ^reg
      - ^search
      - nsstring
      - candidate$
      - form$
      - expression
      - ^share
      - presence
      - mysqli_real_escape
      - onchange
      - account
      - base64
      - email$
      - create
      - ^nil$
      - removed
      - mystring
      - function
      - ^local
      - ^[_.-]
      - '[_.-]$'
      - ^void
      - ^from
      - ^char$
      - ^usr$
      - ^no-reply
      - ^hash$
      - ^%.+%$
      - ^xpathFor

password:
  - type: ContextWindowBanlistPostValidator
    patterns: ['error', 'invalid']
    window_width: 40
    window_type: 'left'
  - type: AssignmentBanlistPostValidator
    patterns:
      - 'hash'
      - 'salt'
      - 'missing'
      - ^(?-i:[a-zA-Z0-9]{1,3}[A-Z0-9](Pwd|PWd|PwD|pWD|pWd|pwD))$
      # Do not match AWS Secret manager recognized by passwordSecretName or passwordSecretKey
      - '^passwordSecret(Name|Key)$'
  - type: CommonValueBanlistPostValidator
  - type: CommonPasswordBanlistPostValidator
  - type: ValueBanlistPostValidator
    patterns:
      - ^\$[a-z]{3}
      # avoid false positives like --fill_me--
      - ^(-{2,4})[a-zA-Z_-]+\1$
      - redacted
      - ^local
      - ^none
      - ^null
      - ^empty
      - ^user
      - pass
      - ^root
      - ^true
      - ^false
      - ^and
      - ^prompt
      - ^final$
      - ^self
      - ^email
      - ^raw
      - ^temp$
      - ^undefined$
      - ^auth_email$
      - test
      - ^req$
      - '1234'
      - ^#
      - ^vault
      - ^java
      - ^ansible
      - ^demo
      - '123213123'
      - ^guest
      - ^visit$
      - ^Coffee123$
      - ^123bla456bla$
      - value
      - ^form
      - ^request
      - ^errors
      - ^before
      - ^wrong pass
      - ^string
      - ^await$
      - ^foo
      - ^change
      - ^disabled
      - ^required
      - ^postgres
      - ^django\.
      - ^please
      - ^validated
      - '%s'
      - ^cleaned
      - \.string$
      - ^wrong
      - ^args\.
      - ^bool(ean)?
      - \/run\/
      - ^url
      - credentialsId
      - field
      - ^open
      - callback
      - validator
      - placeholder
      - anonymous
      - class
      - ^get
      - phone
      - swift
      - type
      - label
      - attribute
      - ^html
      - ^attr
      - text
      - nombre
      - ^ask
      - config
      - input
      - ^enter
      - ^login
      - ^token
      - ^throw
      - credential
      - confirmer
      - ^const
      - ^new
      - ^uid
      - model$
      - ^reg
      - ^search
      - nsstring
      - candidate$
      - form$
      - expression
      - ^share
      - presence
      - mysqli_real_escape
      - onchange
      - account
      - base64
      - email$
      - create
      - ^nil$
      - removed
      - mystring
      - function
      - ^-*$
      - sha256
      - '^[0-9]{1,3}.[0-9]{1,3}s'
      - encrypted
      - bcrypt
      - object
      - secure
      - ^salt$
      - ^emit$
      - ^[~^]?[0-9]+\.[0-9]+\.[0-9]+$
      - ^[^a-z0-9]+$
      - ^%.+%$
      - ^env\.[A-Za-z_]*$
      - ^xpathFor
  - type: EntropyPostValidator
    entropy: 1
  - type: DictFilterPostValidator
    threshold_words_pct_matched: 1.0