Silverpeas Core has a reflected cross-site scripting vulnerability

published 2026-04-22 6 mo ago modified 2026-06-17 4 mo ago also GHSA-vmj7-7xmm-4349 , EUVD-2026-24960

cvss: 6.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 8%
public exploits: 0; none known

A reflected cross-site scripting (XSS) vulnerability in the AdvancedSearch functionality of Silverpeas Core before version 6.4.6 allows attackers to execute arbitrary JavaScript in the context of a user's browser via crafted input.

Patch / fix

links 2

github.com/Silverpeas/Silverpeas-Core@7b4bacc commit
github.com/Silverpeas/Silverpeas-Core#1421 pull request

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 6 mo ago (2026-04-22)

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/bodd1593/CVEs-huyle/tree/main/CVE-2026-30139 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
GitHub	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
maven	org.silverpeas.core:silverpeas-core-war	<=6.4-feature13197	no fix listed
maven	org.silverpeas.core:silverpeas-core-web	<=6.4-feature13197	no fix listed

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

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