How severe is CVE-2023-47321?

CVE-2023-47321 has a CVSS score of 4.9/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2023-47321?

CVE-2023-47321 affects the following packages: org.silverpeas.core:silverpeas-core-web (Maven). Ecosystems affected: Maven.

How do I fix CVE-2023-47321?

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 CVE-2023-47321 is resolved across your whole dependency graph.

How do I detect CVE-2023-47321 in my Maven dependencies?

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.

How do I mitigate CVE-2023-47321 if there is no patch (or I can't update yet)?

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.

Is CVE-2023-47321 actively exploited in the wild?

Yes. There are 1 known exploit references for CVE-2023-47321, including 1 in-the-wild exploitation observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2023-47321?

CVE-2023-47321 has an EPSS (Exploit Prediction Scoring System) score of 0.6%, placing it in the 50th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

When was CVE-2023-47321 published, and has it been updated?

CVE-2023-47321 was published on December 13, 2023 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

MEDIUM severity

CVE-2023-47321 — silverpeas-core-web

MEDIUM

CVE-2023-47321 is a medium-severity (CVSS 4.9) 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.

Broken access control in Silverpeas

Also known asGHSA-28wg-8gv4-mpjf

Published

Dec 13, 2023

Updated

Oct 28, 2026

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 CVE-2023-47321.

EPSS Exploitation Probability

via FIRST.org ↗

0.6%probability of exploitation in next 30 days

Lower Risk-0.00%

Lower risk than most CVEs50th percentile — riskier than 50% of all scored CVEsHighest risk

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

Silverpeas Core 6.3.1 is vulnerable to Incorrect Access Control via the "Porlet Deployer" which allows administrators to deploy .WAR portlets.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.silverpeas.core:silverpeas-core-web`	all versions	6.3.2`org.silverpeas.core:silverpeas-core-web:6.3.2`

Affected Products

1 product · 1 configurations

Application

silverpeassilverpeas

< 6.3.2

range

Exploits & PoCs

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

Silverpeas Core 6.3.1 is vulnerable to Incorrect Access Control via the …

github.comNVDDec 2023

Detection & mitigation playbook

Open-source dependency

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.
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 CVE-2023-47321 is resolved across your whole dependency graph.
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

Silverpeas Core 6.3.1 is vulnerable to Incorrect Access Control via the "Porlet Deployer" which allows administrators to deploy .WAR portlets.

O3 Security · Impact-Aware SCA

Is CVE-2023-47321 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

4.9/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Weaponization

No Nuclei template or Metasploit module yet. 1 public proof-of-concept reference is listed on this page.

Timeline

Disclosed

Dec 13, 2023

First exploit

Dec 15, 2023

3 days after disclosure — rapid exploitation

Last updated

Oct 28, 2026

Identifiers

CVE-2023-47321

GHSA-28wg-8gv4-mpjf

References

Advisorygithub.com · CVE 2023 47321.json Advisorynvd.nist.gov · CVE 2023 47321 Webgithub.com · CVE 2023 47321 Websilverpeas.com Packagegithub.com · Silverpeas Core

Related vulnerabilities

This CVE is medium severity; 7 of 8 other CVEs affecting silverpeas-core-web are rated as high or higher (top: high).

CVE-2026-30139CVE-2024-39031CVE-2023-47325CVE-2023-47323CVE-2023-47322CVE-2023-47327CVE-2023-47324CVE-2023-47320

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 28, 2026

CVE-2023-47321 — silverpeas-core-web

Exploitation Status

No confirmed exploitation observed yet

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2023-47321 in your dependencies?