CVE-2023-34089 json
Decidim Cross-site Scripting vulnerability in the processes filter
published 2023-07-11 3 y ago modified 2026-09-10 1 mo ago also GHSA-5652-92r9-3fx9 , EUVD-2023-1963
- cvss
- 8.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 54%
- public exploits
- 0
- none known
Summary
Decidim is a participatory democracy framework, written in Ruby on Rails, originally developed for the Barcelona City government online and offline participation website. The processes filter feature is susceptible to Cross-site scripting. This allows a remote attacker to execute JavaScript code in the context of a currently logged-in user. An attacker could use this vulnerability to make other users endorse or support proposals they have no intention of supporting or endorsing. The problem was patched in version 0.27.3 and 0.26.7.
Patch / fix
- rubygems decidim 0.26.7, 0.27.3
- rubygems decidim-core 0.26.7, 0.27.3
- decidim decidim 0.26.7, 0.27.3
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
0.74% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| GitHub | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| rubygems | decidim | >=0.14.0, <0.26.7 >=0.27.0, <0.27.3 |
0.26.7 0.27.3 |
| rubygems | decidim-core | >=0.14.0, <0.26.7 >=0.27.0, <0.27.3 |
0.26.7 0.27.3 |
Affected products
- decidim decidim
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/decidim/decidim/security/advisories/GHSA-5652-92r9-3fx9
web, third-party-advisory
-
github.com
/decidim/decidim/releases/tag/v0.26.6
web, release-notes
-
github.com
/decidim/decidim/releases/tag/v0.27.3
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2023-34089
advisory
-
github.com
/decidim/decidim
package
-
github.com
/decidim/decidim/releases/tag/v0.26.7
web
-
github.com
/rubysec/ruby-advisory-db/blob/master/gems/decidim-core/CVE-2023-34089.yml
web
-
github.com
/rubysec/ruby-advisory-db/blob/master/gems/decidim/CVE-2023-34089.yml
web
Sources
- CVE List CVE-2023-34089
- GitHub Advisory GHSA-5652-92r9-3fx9
- NVD CVE-2023-34089
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