Missing access control in Silverpeas

published 2023-12-13 2 y ago modified 2026-07-09 4 mo ago also GHSA-cwh6-hm53-6w2m , EUVD-2023-3190

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits: 0; none known

The notification/messaging feature of Silverpeas Core 6.3.1 does not enforce access control on the ID parameter. This allows an attacker to read all messages sent between other users; including those sent only to administrators.

Patch / fix

fixed in 3 links 1

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

github.com/Silverpeas/Silverpeas-Core@6383746 commit

Exploit prediction

0.77% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/RhinoSecurityLabs/CVEs/tree/master/CVE-2023-47323 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

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

References

github.com /Silverpeas/Silverpeas-Core/commit/6383746372d408eeefa73e17ef95608ddd2c7fba
web
github.com /RhinoSecurityLabs/CVEs/tree/master/CVE-2023-47323
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2023-47323
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