Broken access control in Silverpeas

published 2023-12-13 2 y ago modified 2026-07-09 4 mo ago also GHSA-vpp3-hpcm-v944 , EUVD-2023-3304

cvss: 4.3; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits: 0; none known

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.

Patch / fix

fixed in 2

maven org.silverpeas.core:silverpeas-core-web 6.3.2
silverpeas silverpeas 6.3.2

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 23 mo ago (2024-11-26)

Exploit prediction

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/RhinoSecurityLabs/CVEs/tree/master/CVE-2023-47327 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
GitHub	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
maven	org.silverpeas.core:silverpeas-core-web	<6.3.2	6.3.2

Classification

Weakness

CWE-284 Improper Access Control

References

github.com /RhinoSecurityLabs/CVEs/tree/master/CVE-2023-47327
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2023-47327
advisory
github.com /Silverpeas/Silverpeas-Core
package
silverpeas.com
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary