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Vulnerability details: VCID-yqfa-mvvd-1ffv
Vulnerability ID VCID-yqfa-mvvd-1ffv
Aliases CVE-2021-31671
GHSA-72rj-36qc-47g7
Summary
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-319 Cleartext Transmission of Sensitive Information
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-31671
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-31671
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-72rj-36qc-47g7
cvssv3.1 7.5 https://github.com/ankane/pgsync/blob/master/CHANGELOG.md#067-2021-04-26
generic_textual HIGH https://github.com/ankane/pgsync/blob/master/CHANGELOG.md#067-2021-04-26
cvssv3.1 7.5 https://github.com/ankane/pgsync/commit/05cd18f5fc09407e4b544f2c12f819cabc50c40e
generic_textual HIGH https://github.com/ankane/pgsync/commit/05cd18f5fc09407e4b544f2c12f819cabc50c40e
cvssv3 7.5 https://github.com/ankane/pgsync/issues/121
cvssv3.1 7.5 https://github.com/ankane/pgsync/issues/121
generic_textual HIGH https://github.com/ankane/pgsync/issues/121
cvssv3.1 7.5 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/pgsync/CVE-2021-31671.yml
generic_textual HIGH https://github.com/rubysec/ruby-advisory-db/blob/master/gems/pgsync/CVE-2021-31671.yml
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-31671
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2021-31671
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-31671
https://github.com/ankane/pgsync/blob/master/CHANGELOG.md#067-2021-04-26
https://github.com/ankane/pgsync/commit/05cd18f5fc09407e4b544f2c12f819cabc50c40e
https://github.com/ankane/pgsync/issues/121
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/pgsync/CVE-2021-31671.yml
https://nvd.nist.gov/vuln/detail/CVE-2021-31671
GHSA-72rj-36qc-47g7 https://github.com/advisories/GHSA-72rj-36qc-47g7
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/ankane/pgsync/blob/master/CHANGELOG.md#067-2021-04-26
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/ankane/pgsync/commit/05cd18f5fc09407e4b544f2c12f819cabc50c40e
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/ankane/pgsync/issues/121
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/rubysec/ruby-advisory-db/blob/master/gems/pgsync/CVE-2021-31671.yml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-31671
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.38607
EPSS Score 0.00174
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-12T02:00:51.667032+00:00 EPSS Importer Import https://epss.cyentia.com/epss_scores-current.csv.gz 38.6.0