Security readout for executives and security teams
Plain-English summary
CVE-2023-32693 is a cross-site scripting flaw in Decidim’s external link redirection feature. A remote attacker could run JavaScript in a logged-in user’s browser and potentially cause unwanted proposal endorsements or support actions. The issue is patched in Decidim 0.26.7 and 0.27.3.
Executive priority
Treat as high priority for affected civic engagement portals because the flaw can undermine user trust and integrity of participation outcomes. Patch promptly, but current sources do not prove active exploitation.
Technical view
The vulnerability is CWE-79 XSS affecting Decidim versions >=0.25.0 and <0.26.7, and >=0.27.0 and <0.27.3. CVSS 3.1 is 8.1, with network attack vector, low complexity, no privileges required, and required user interaction.
Likely exposure
Exposure is limited to organizations running affected Decidim versions, especially public participation portals with authenticated users and proposal endorsement or support workflows.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. Exploitation requires user interaction and affects logged-in user context.
Researcher notes
Focus review on external link redirection handling and browser execution context. Avoid assuming broader Decidim components are affected unless vendor sources confirm it. Evidence is strong for affected ranges and fixed versions, but exploitation telemetry is not provided.
Mitigation direction
- Upgrade Decidim 0.26.x deployments to 0.26.7 or later.
- Upgrade Decidim 0.27.x deployments to 0.27.3 or later.
- Review the GitHub advisory and release notes before rollout.
- Prioritize portals where authenticated users can endorse or support proposals.
Validation and detection
- Inventory Decidim versions across production, staging, and container images.
- Confirm no deployment runs versions >=0.25.0 and <0.26.7.
- Confirm no deployment runs versions >=0.27.0 and <0.27.3.
- Review recent endorsement or support activity for unexpected user actions.
- Regression-test external link redirection behavior with benign security test cases.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2023-32693 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N2.85.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/decidim/decidim/security/advisories/GHSA-469h-mqg8-535rCVE reference · x_refsource_CONFIRM
- https://github.com/decidim/decidim/releases/tag/v0.26.7CVE reference · x_refsource_MISC
- https://github.com/decidim/decidim/releases/tag/v0.27.3CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.