EUVD-2026-74259
GHSA-39x9-gq6g-5jcf
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
PR:L assigned because editing a Multimedia library introduction likely requires at least a contributor account; all other provided metrics are retained.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
3DescriptionCVE.org
Silverpeas Core <=6.4.6 is vulnerable to Cross Site Scripting (XSS) via the Multimedia library application introduction.
AnalysisAI
Cross-site scripting in Silverpeas Core <=6.4.6 enables attackers to inject malicious JavaScript via the Multimedia library application's introduction field, executing arbitrary scripts in victim users' browser contexts. The scope-changed CVSS vector (S:C) confirms the payload crosses security boundaries, affecting any authenticated user who views the injected library introduction. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must be able to write to the Multimedia library application's introduction field in Silverpeas Core. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 6.1 Medium rating reflects genuinely constrained impact: confidentiality and integrity effects are both Low (C:L/I:L), exploitation requires victim interaction (UI:R), and availability is unaffected (A:N). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch version is confirmed from available references - no official advisory URL or tagged release is cited in the input data. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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