NIST deprecates RSA-2048 from 2030. Find every one of them before attackers do.
💎
💎 RubyGems
Not in CISA KEV
MEDIUM severity

Decidim vulnerable to data disclosure through the embed featureGHSA-qcj6-vxwx-4rqv

MEDIUMFix: decidim/decidim#12528

GHSA-qcj6-vxwx-4rqv is a medium-severity (CVSS 5.3) Information Exposure vulnerability in decidim. A fix is available for decidim — see the affected versions and patch details below.

Also known asCVE-2024-27090
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-qcj6-vxwx-4rqv.

EPSS Exploitation Probability

via FIRST.org ↗
0.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs43th percentile — riskier than 43% of all scored CVEsHighest risk
0.00%0.33%0.66%0.99%0.3%0.5%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
💎decidim

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.

Description

Impact

If an attacker can infer the slug or URL of an unpublished or private resource, and this resource can be embedded (such as a Participatory Process, an Assembly, a Proposal, a Result, etc), then some data of this resource could be accessed.

Patches

version 0.27.6

https://github.com/decidim/decidim/commit/1756fa639ef393ca8e8bb16221cab2e2e7875705

Workarounds

Disallow access through your web server to the URLs finished with /embed.html

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
💎RubyGemsdecidimall versions0.27.6bundle update decidim --conservative

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for decidim, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update decidim to 0.27.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-qcj6-vxwx-4rqv is resolved across your whole dependency graph.

  3. Workarounds

    Assume what was exposed is already known: rotate any credential, token or key that the affected component could return, restrict the endpoint to callers that genuinely need it, and strip sensitive fields from responses and error output at the boundary rather than relying on the client not to read them.

Frequently Asked Questions

### Impact If an attacker can infer the slug or URL of an unpublished or private resource, and this resource can be embedded (such as a Participatory Process, an Assembly, a Proposal, a Result, etc), then some data of this resource could be accessed. ### Patches version 0.27.6 https://github.com/decidim/decidim/commit/1756fa639ef393ca8e8bb16221cab2e2e7875705 ### Workarounds Disallow access through your web server to the URLs finished with `/embed.html`
O3 Security · Impact-Aware SCA

Is GHSA-qcj6-vxwx-4rqv in your dependencies?

Find it across RubyGems, including transitive dependencies.

Scan my dependencies How O3 SCA works
Decidim vulnerable to data disclosure through the embed…