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Vulnerability details: VCID-22h1-rmkz-xuef
Vulnerability ID VCID-22h1-rmkz-xuef
Aliases CVE-2023-47634
GHSA-r275-j57c-7mf2
Summary Decidim is a participatory democracy framework. Starting in version 0.10.0 and prior to versions 0.26.9, 0.27.5, and 0.28.0, a race condition in the endorsement of resources (for instance, a proposal) allows a user to make more than once endorsement. To exploit this vulnerability, the request to set an endorsement must be sent several times in parallel. Versions 0.26.9, 0.27.5, and 0.28.0 contain a patch for this issue. As a workaround, disable the Endorsement feature in the components.
Status Published
Exploitability 0.5
Weighted Severity 2.8
Risk 1.4
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00287 https://api.first.org/data/v1/epss?cve=CVE-2023-47634
epss 0.00287 https://api.first.org/data/v1/epss?cve=CVE-2023-47634
epss 0.00287 https://api.first.org/data/v1/epss?cve=CVE-2023-47634
epss 0.00287 https://api.first.org/data/v1/epss?cve=CVE-2023-47634
cvssv3.1_qr LOW https://github.com/advisories/GHSA-r275-j57c-7mf2
cvssv3.1 3.1 https://github.com/decidim/decidim
generic_textual LOW https://github.com/decidim/decidim
cvssv3.1 3.1 https://github.com/decidim/decidim/commit/5c5ee7a50d75c10643dd8c495e2517641e4d74db
generic_textual LOW https://github.com/decidim/decidim/commit/5c5ee7a50d75c10643dd8c495e2517641e4d74db
cvssv3.1 3.1 https://github.com/decidim/decidim/commit/7b840d2c37a562709f4481db644d8c43add28536
generic_textual LOW https://github.com/decidim/decidim/commit/7b840d2c37a562709f4481db644d8c43add28536
cvssv3.1 3.1 https://github.com/decidim/decidim/releases/tag/v0.26.9
generic_textual LOW https://github.com/decidim/decidim/releases/tag/v0.26.9
ssvc Track https://github.com/decidim/decidim/releases/tag/v0.26.9
cvssv3.1 3.1 https://github.com/decidim/decidim/releases/tag/v0.27.5
generic_textual LOW https://github.com/decidim/decidim/releases/tag/v0.27.5
ssvc Track https://github.com/decidim/decidim/releases/tag/v0.27.5
cvssv3.1 3.1 https://github.com/decidim/decidim/releases/tag/v0.28.0
generic_textual LOW https://github.com/decidim/decidim/releases/tag/v0.28.0
ssvc Track https://github.com/decidim/decidim/releases/tag/v0.28.0
cvssv3 3.1 https://github.com/decidim/decidim/security/advisories/GHSA-r275-j57c-7mf2
cvssv3.1 3.1 https://github.com/decidim/decidim/security/advisories/GHSA-r275-j57c-7mf2
cvssv3.1_qr LOW https://github.com/decidim/decidim/security/advisories/GHSA-r275-j57c-7mf2
generic_textual LOW https://github.com/decidim/decidim/security/advisories/GHSA-r275-j57c-7mf2
ssvc Track https://github.com/decidim/decidim/security/advisories/GHSA-r275-j57c-7mf2
cvssv3.1 3.1 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim/CVE-2023-47634.yml
generic_textual LOW https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim/CVE-2023-47634.yml
cvssv3.1 3.1 https://nvd.nist.gov/vuln/detail/CVE-2023-47634
generic_textual LOW https://nvd.nist.gov/vuln/detail/CVE-2023-47634
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2023-47634
https://github.com/decidim/decidim
https://github.com/decidim/decidim/commit/5c5ee7a50d75c10643dd8c495e2517641e4d74db
https://github.com/decidim/decidim/commit/7b840d2c37a562709f4481db644d8c43add28536
CVE-2023-47634 https://nvd.nist.gov/vuln/detail/CVE-2023-47634
CVE-2023-47634.YML https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim/CVE-2023-47634.yml
GHSA-r275-j57c-7mf2 https://github.com/advisories/GHSA-r275-j57c-7mf2
GHSA-r275-j57c-7mf2 https://github.com/decidim/decidim/security/advisories/GHSA-r275-j57c-7mf2
v0.26.9 https://github.com/decidim/decidim/releases/tag/v0.26.9
v0.27.5 https://github.com/decidim/decidim/releases/tag/v0.27.5
v0.28.0 https://github.com/decidim/decidim/releases/tag/v0.28.0
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/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

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none

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unchanged

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low

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none
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N Found at https://github.com/decidim/decidim/commit/5c5ee7a50d75c10643dd8c495e2517641e4d74db
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

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unchanged

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Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N Found at https://github.com/decidim/decidim/commit/7b840d2c37a562709f4481db644d8c43add28536
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

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physical

low

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Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N Found at https://github.com/decidim/decidim/releases/tag/v0.26.9
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

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none

low

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required

unchanged

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-02-29T18:21:02Z/ Found at https://github.com/decidim/decidim/releases/tag/v0.26.9
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N Found at https://github.com/decidim/decidim/releases/tag/v0.27.5
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

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high

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none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-02-29T18:21:02Z/ Found at https://github.com/decidim/decidim/releases/tag/v0.27.5
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N Found at https://github.com/decidim/decidim/releases/tag/v0.28.0
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

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none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-02-29T18:21:02Z/ Found at https://github.com/decidim/decidim/releases/tag/v0.28.0
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N Found at https://github.com/decidim/decidim/security/advisories/GHSA-r275-j57c-7mf2
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:N/T:P/P:M/B:A/M:M/D:T/2024-02-29T18:21:02Z/ Found at https://github.com/decidim/decidim/security/advisories/GHSA-r275-j57c-7mf2
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N Found at https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim/CVE-2023-47634.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

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none
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-47634
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

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low

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none
Exploit Prediction Scoring System (EPSS)
Percentile 0.52463
EPSS Score 0.00287
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T17:28:30.567353+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2023/47xxx/CVE-2023-47634.json 38.6.0