How severe is CVE-2026-30139?

CVE-2026-30139 has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2026-30139?

CVE-2026-30139 affects the following packages: org.silverpeas.core:silverpeas-core-war (Maven), org.silverpeas.core:silverpeas-core-web (Maven). Ecosystems affected: Maven.

How do I fix CVE-2026-30139?

The records we use list no patched version of org.silverpeas.core:silverpeas-core-war for CVE-2026-30139. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

How do I detect CVE-2026-30139 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-war, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2026-30139 if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is CVE-2026-30139 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-30139 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-30139?

CVE-2026-30139 has an EPSS (Exploit Prediction Scoring System) score of 0.2%, placing it in the 9th 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.

What type of vulnerability is CVE-2026-30139?

CVE-2026-30139 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2026-30139 published, and has it been updated?

CVE-2026-30139 was published on April 22, 2026 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-2026-30139 — silverpeas-core-war

MEDIUMFix: Silverpeas/Silverpeas-Core#1421

CVE-2026-30139 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in org.silverpeas.core:silverpeas-core-war. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Silverpeas Core has a reflected cross-site scripting vulnerability

Also known asGHSA-vmj7-7xmm-4349

Published

Apr 22, 2026

Updated

Oct 28, 2026

Affected

2 pkgs

Patched

See advisory

Exploits

None indexed

Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-30139.

EPSS Exploitation Probability

via FIRST.org ↗

0.2%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs9th percentile — riskier than 9% 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

2 pkgs affected

☕org.silverpeas.core:silverpeas-core-war☕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

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.

Affected Packages

2 total

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.silverpeas.core:silverpeas-core-war`	all versions	No fix
☕Maven	`org.silverpeas.core:silverpeas-core-web`	all versions	No fix

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-war, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
The records we use list no patched version of org.silverpeas.core:silverpeas-core-war for CVE-2026-30139. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.
Mitigate without a patch
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2026-30139 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

6.1/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Raw vector

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

CWE Classification

CWE-79Cross-site Scripting (XSS)

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

Timeline

Disclosed

Apr 22, 2026

Last updated

Oct 28, 2026

Identifiers

CVE-2026-30139

GHSA-vmj7-7xmm-4349

References

Advisorygithub.com · CVE 2026 30139.json Advisorynvd.nist.gov · CVE 2026 30139 Fixgithub.com Webgithub.com · CVE 2026 30139 Webgithub.com · 7b4bacc80d11ab60423bdc6eb69e0176e9c27fc7 Packagegithub.com · Silverpeas Core

Related vulnerabilities

Also affects silverpeas-core-war

This CVE is medium severity; 2 of 3 other CVEs affecting silverpeas-core-war are rated as high or higher (top: moderate).

CVE-2026-53698CVE-2023-47324CVE-2023-47320

Also affects silverpeas-core-web

This CVE is medium severity; 5 of 5 other CVEs affecting silverpeas-core-web are rated as high or higher (top: high).

CVE-2024-39031CVE-2023-47321CVE-2023-47325CVE-2023-47323CVE-2023-47322

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 28, 2026