CVE-2026-78742

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory published 2026-09-08. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Silverpeas Core <=6.4.6 is vulnerable to Cross Site Scripting (XSS) via the Multimedia library application introduction.

CVSS v3
6.1
EG Score
6.1(high)
EG Risk
43(Track)
EG Risk 43/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity61% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 9, 2026

Advisory Details (1)

Auto-updated Sep 9, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

[ RESEARCH ] - CVE-2026-78742 - Stored Cross Site Scripting (XSS) in introduction Multimedia library application (Silverpeas Core <=6.4.6) · HEKK

https://hekk.one/posts/research/cve-2026-78742/

Vendor Advisories for CVE-2026-78742(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 18× in last 7d / 52× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-24 21:53 UTCEG score recompute
  2. 2026-09-24 21:53 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-23 19:43 UTCEG score recompute
  5. 2026-09-23 19:43 UTCGHSA enrichment
  6. 2026-09-23 17:54 UTCEPSS rescore
  7. 2026-09-22 17:18 UTCEG score recompute
  8. 2026-09-22 17:17 UTCGHSA enrichment
  9. 2026-09-22 16:01 UTCEPSS rescore
  10. 2026-09-21 21:09 UTCEPSS rescore
  11. 2026-09-21 15:05 UTCEG score recompute
  12. 2026-09-21 15:05 UTCGHSA enrichment
  13. 2026-09-20 20:16 UTCEPSS rescore
  14. 2026-09-20 12:48 UTCEG score recompute
  15. 2026-09-20 12:48 UTCGHSA enrichment
  16. 2026-09-19 10:47 UTCEG score recompute
  17. 2026-09-19 10:47 UTCGHSA enrichment
  18. 2026-09-18 19:28 UTCEPSS rescore
  19. 2026-09-18 08:46 UTCEG score recompute
  20. 2026-09-18 08:46 UTCGHSA enrichment
  21. 2026-09-17 06:45 UTCEG score recompute
  22. 2026-09-17 06:45 UTCGHSA enrichment
  23. 2026-09-16 14:08 UTCEPSS rescore
  24. 2026-09-16 05:15 UTCEPSS rescore
  25. 2026-09-16 04:39 UTCEG score recompute
Show 27 more
  1. 2026-09-16 04:39 UTCGHSA enrichment
  2. 2026-09-15 03:12 UTCEPSS rescore
  3. 2026-09-15 03:12 UTCEPSS rescore
  4. 2026-09-15 02:38 UTCGHSA enrichment
  5. 2026-09-14 00:37 UTCEG score recompute
  6. 2026-09-14 00:37 UTCGHSA enrichment
  7. 2026-09-12 22:36 UTCEG score recompute
  8. 2026-09-12 22:36 UTCGHSA enrichment
  9. 2026-09-11 20:35 UTCEG score recompute
  10. 2026-09-11 20:35 UTCGHSA enrichment
  11. 2026-09-11 14:53 UTCEPSS rescore
  12. 2026-09-11 14:53 UTCEPSS rescore
  13. 2026-09-10 18:33 UTCEG score recompute
  14. 2026-09-10 18:32 UTCGHSA enrichment
  15. 2026-09-09 16:30 UTCEG score recompute▲ 6.10
  16. 2026-09-09 16:30 UTCGHSA enrichment
  17. 2026-09-09 16:27 UTCNVD updateCVSS v3 → 6.1 · severity → MEDIUM
  18. 2026-09-09 16:08 UTCEG score recompute▼ 6.10
  19. 2026-09-09 16:08 UTCGHSA enrichment
  20. 2026-09-09 16:07 UTCNVD update
  21. 2026-09-09 15:35 UTCEG score recompute▲ 6.10
  22. 2026-09-09 15:35 UTCGHSA enrichment
  23. 2026-09-09 15:34 UTCMITRE cvelistV5CVSS v3 → 6.1 · severity → MEDIUM
  24. 2026-09-08 21:53 UTCGHSA enrichment
  25. 2026-09-08 21:31 UTCNVD update
  26. 2026-09-08 20:50 UTCEG score recompute
  27. 2026-09-08 20:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-78742?
CVE-2026-78742 is a medium vulnerability published on September 8, 2026. Silverpeas Core <=6.4.6 is vulnerable to Cross Site Scripting (XSS) via the Multimedia library application introduction.
When was CVE-2026-78742 disclosed?
CVE-2026-78742 was first published in the National Vulnerability Database on September 8, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78742 actively exploited?
CVE-2026-78742 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 85.1% of all scored CVEs.
What is the CVSS score of CVE-2026-78742?
CVE-2026-78742 has a CVSS v3.1 base score of 6.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-78742?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78742, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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