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Vulnerability details: VCID-h9qw-apes-rbb6
Vulnerability ID VCID-h9qw-apes-rbb6
Aliases CVE-2023-34090
GHSA-jm79-9pm4-vrw9
Summary Decidim is a participatory democracy framework, written in Ruby on Rails, originally developed for the Barcelona City government online and offline participation website. Decidim uses a third-party library named Ransack for filtering certain database collections (e.g., public meetings). By default, this library allows filtering on all data attributes and associations. This allows an unauthenticated remote attacker to exfiltrate non-public data from the underlying database of a Decidim instance (e.g., exfiltrating data from the user table). This issue may lead to Sensitive Data Disclosure. The problem was patched in version 0.27.3.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
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 0.0038 https://api.first.org/data/v1/epss?cve=CVE-2023-34090
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-jm79-9pm4-vrw9
cvssv3.1 7.5 https://github.com/decidim/decidim
generic_textual HIGH https://github.com/decidim/decidim
cvssv3.1 7.5 https://github.com/decidim/decidim/releases/tag/v0.27.3
generic_textual HIGH https://github.com/decidim/decidim/releases/tag/v0.27.3
ssvc Track https://github.com/decidim/decidim/releases/tag/v0.27.3
cvssv3 7.5 https://github.com/decidim/decidim/security/advisories/GHSA-jm79-9pm4-vrw9
cvssv3.1 7.5 https://github.com/decidim/decidim/security/advisories/GHSA-jm79-9pm4-vrw9
cvssv3.1_qr HIGH https://github.com/decidim/decidim/security/advisories/GHSA-jm79-9pm4-vrw9
generic_textual HIGH https://github.com/decidim/decidim/security/advisories/GHSA-jm79-9pm4-vrw9
ssvc Track https://github.com/decidim/decidim/security/advisories/GHSA-jm79-9pm4-vrw9
cvssv3.1 7.5 https://github.com/decidim/decidim/security/advisories/GHSA-jm79-9pm4-vrw9#advisory-comment-81110
generic_textual HIGH https://github.com/decidim/decidim/security/advisories/GHSA-jm79-9pm4-vrw9#advisory-comment-81110
ssvc Track https://github.com/decidim/decidim/security/advisories/GHSA-jm79-9pm4-vrw9#advisory-comment-81110
cvssv3.1 7.5 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim/CVE-2023-34090.yml
generic_textual HIGH https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim/CVE-2023-34090.yml
cvssv3.1 7.5 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim-meetings/CVE-2023-34090.yml
generic_textual HIGH https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim-meetings/CVE-2023-34090.yml
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2023-34090
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2023-34090
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2023-34090
https://github.com/decidim/decidim
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim/CVE-2023-34090.yml
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim-meetings/CVE-2023-34090.yml
https://nvd.nist.gov/vuln/detail/CVE-2023-34090
GHSA-jm79-9pm4-vrw9 https://github.com/advisories/GHSA-jm79-9pm4-vrw9
GHSA-jm79-9pm4-vrw9 https://github.com/decidim/decidim/security/advisories/GHSA-jm79-9pm4-vrw9
GHSA-jm79-9pm4-vrw9#advisory-comment-81110 https://github.com/decidim/decidim/security/advisories/GHSA-jm79-9pm4-vrw9#advisory-comment-81110
v0.27.3 https://github.com/decidim/decidim/releases/tag/v0.27.3
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/decidim/decidim
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/decidim/decidim/releases/tag/v0.27.3
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: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-10-23T15:26:40Z/ Found at https://github.com/decidim/decidim/releases/tag/v0.27.3
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/decidim/decidim/security/advisories/GHSA-jm79-9pm4-vrw9
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: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-10-23T15:26:40Z/ Found at https://github.com/decidim/decidim/security/advisories/GHSA-jm79-9pm4-vrw9
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/decidim/decidim/security/advisories/GHSA-jm79-9pm4-vrw9#advisory-comment-81110
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: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-10-23T15:26:40Z/ Found at https://github.com/decidim/decidim/security/advisories/GHSA-jm79-9pm4-vrw9#advisory-comment-81110
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/decidim/CVE-2023-34090.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://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim-meetings/CVE-2023-34090.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-2023-34090
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 0.59903
EPSS Score 0.0038
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T17:26:06.218376+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2023/34xxx/CVE-2023-34090.json 38.6.0