High severity8.1NVD Advisory· Published Jul 11, 2023· Updated Jun 17, 2026
CVE-2023-34089
CVE-2023-34089
Description
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
decidimRubyGems | >= 0.14.0, < 0.26.7 | 0.26.7 |
decidimRubyGems | >= 0.27.0, < 0.27.3 | 0.27.3 |
decidim-coreRubyGems | >= 0.14.0, < 0.26.7 | 0.26.7 |
decidim-coreRubyGems | >= 0.27.0, < 0.27.3 | 0.27.3 |
Affected products
4- ghsa-coords2 versions
>= 0.14.0, < 0.26.7+ 1 more
- (no CPE)range: >= 0.14.0, < 0.26.7
- (no CPE)range: >= 0.14.0, < 0.26.7
Patches
Vulnerability mechanics
References
8- github.com/advisories/GHSA-5652-92r9-3fx9ghsaADVISORY
- github.com/decidim/decidim/security/advisories/GHSA-5652-92r9-3fx9nvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2023-34089ghsaADVISORY
- github.com/decidim/decidim/releases/tag/v0.26.6nvdRelease NotesWEB
- github.com/decidim/decidim/releases/tag/v0.26.7ghsaWEB
- github.com/decidim/decidim/releases/tag/v0.27.3nvdRelease NotesWEB
- github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim-core/CVE-2023-34089.ymlghsaWEB
- github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim/CVE-2023-34089.ymlghsaWEB
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