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MEDIUM severity

Broken access control in SilverpeasGHSA-vpp3-hpcm-v944

MEDIUM

GHSA-vpp3-hpcm-v944 is a medium-severity (CVSS 4.3) vulnerability in org.silverpeas.core:silverpeas-core-web. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for org.silverpeas.core:silverpeas-core-web — see the affected versions and patch details below.

Also known asCVE-2023-47327
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Nov 3, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • 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-vpp3-hpcm-v944.

EPSS Exploitation Probability

via FIRST.org ↗
0.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs44th percentile — riskier than 44% of all scored CVEsHighest risk
0.00%0.34%0.68%1.02%0.1%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
☕org.silverpeas.core:silverpeas-core-web

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

Description

The "Create a Space" feature in Silverpeas Core 6.3.1 is reserved for use by administrators. This function suffers from broken access control, allowing any authenticated user to create a space by navigating to the correct URL.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.silverpeas.core:silverpeas-core-weball versions6.3.2org.silverpeas.core:silverpeas-core-web:6.3.2

Affected Products

1 product · 1 configurations
Application
silverpeassilverpeas
< 6.3.2
range
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

The "Create a Space" feature in Silverpeas Core 6.3.1 is reserved for us…

github.comNVDDec 2023

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update org.silverpeas.core:silverpeas-core-web to 6.3.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-vpp3-hpcm-v944 is resolved across your whole dependency graph.

  3. Workarounds

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

The "Create a Space" feature in Silverpeas Core 6.3.1 is reserved for use by administrators. This function suffers from broken access control, allowing any authenticated user to create a space by navigating to the correct URL.
O3 Security · Impact-Aware SCA

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Broken access control in Silverpeas (Medium 4.3)