CVE-2026-79320

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory published 2026-09-21. 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 week
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.1Exploit: None knownExposed services: Not assessed

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

Stencil core 4.43.5 contains a DOM-based cross-site scripting (XSS) vulnerability in the component runtime. When a downstream application enables the experimental slot fixes option and uses scoped components, assigning a string to the textContent property of such a component's host element causes the value to be parsed as HTML instead of being inserted as text. If an application writes attacker-controlled data to these host elements, the data can be interpreted as markup and script can execute in the context of the application's origin.

CVSS v3
6.1
EG Score
6.1MEDIUMhigh confidence
EG Risk
28
EG Risk 28/100CISA SSVC

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%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
3rd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 21, 2026

Last Modified

September 24, 2026

Advisory Details (2)

Auto-updated Sep 24, 2026
No patch confirmed yet.
generic

GitHub - stenciljs/core: A toolchain for building scalable, enterprise-ready component systems on top of TypeScript and Web Component standards. Stencil components can be distributed natively to React, Angular, Vue, (+ more) and traditional web applications from a single, framework-agnostic codebase. · GitHub

https://github.com/stenciljs/core
generic

TraceLoom/CVEs/CVE-2026-79320.md at main · lichoin/TraceLoom · GitHub

https://github.com/lichoin/TraceLoom/blob/main/CVEs/CVE-2026-79320.md

Vendor Advisories for CVE-2026-79320(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 20× in last 7d / 41× 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. 2026-10-04 16:57 UTCGHSA enrichment
  2. 2026-10-03 18:48 UTCEG score recompute
  3. 2026-10-03 18:48 UTCGHSA enrichment
  4. 2026-10-03 14:26 UTCEPSS rescore
  5. 2026-10-02 20:40 UTCEG score recompute
  6. 2026-10-02 20:40 UTCGHSA enrichment
  7. 2026-10-02 17:57 UTCEPSS rescore
  8. 2026-10-01 22:26 UTCEG score recompute
  9. 2026-10-01 22:26 UTCGHSA enrichment
  10. 2026-10-01 19:50 UTCEPSS rescore
  11. 2026-10-01 00:19 UTCEG score recompute
  12. 2026-10-01 00:18 UTCGHSA enrichment
  13. 2026-09-30 02:05 UTCEG score recompute
  14. 2026-09-30 02:05 UTCGHSA enrichment
  15. 2026-09-29 15:24 UTCEPSS rescore
  16. 2026-09-29 04:00 UTCEG score recompute
  17. 2026-09-29 04:00 UTCGHSA enrichment
  18. 2026-09-28 13:52 UTCEPSS rescore
  19. 2026-09-28 05:54 UTCEG score recompute
  20. 2026-09-28 05:54 UTCGHSA enrichment
  21. 2026-09-27 13:48 UTCEPSS rescore
  22. 2026-09-27 07:50 UTCEG score recompute
  23. 2026-09-27 07:50 UTCGHSA enrichment
  24. 2026-09-26 15:59 UTCEPSS rescore
  25. 2026-09-26 09:44 UTCEG score recompute
Show 16 more
  1. 2026-09-26 09:44 UTCGHSA enrichment
  2. 2026-09-26 00:28 UTCEPSS rescore
  3. 2026-09-25 11:39 UTCEG score recompute
  4. 2026-09-25 11:39 UTCGHSA enrichment
  5. 2026-09-24 14:04 UTCEPSS rescore
  6. 2026-09-24 13:25 UTCGHSA enrichment
  7. 2026-09-24 13:01 UTCEG score recompute▲ 6.10
  8. 2026-09-24 13:01 UTCGHSA enrichment
  9. 2026-09-24 13:01 UTCMITRE cvelistV5CVSS v3 → 6.1 · severity → MEDIUM
  10. 2026-09-23 17:54 UTCEPSS rescore
  11. 2026-09-22 20:13 UTCEG score recompute
  12. 2026-09-22 20:13 UTCGHSA enrichment
  13. 2026-09-22 16:01 UTCEPSS rescore
  14. 2026-09-21 20:17 UTCNVD update
  15. 2026-09-21 19:45 UTCEG score recompute
  16. 2026-09-21 19:45 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-79320?
CVE-2026-79320 is a medium vulnerability published on September 21, 2026. Stencil core 4.43.5 contains a DOM-based cross-site scripting (XSS) vulnerability in the component runtime. When a downstream application enables the experimental slot fixes option and uses scoped components, assigning a string to the textContent property of such a component's host element causes…
When was CVE-2026-79320 disclosed?
CVE-2026-79320 was first published on September 21, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-79320 actively exploited?
CVE-2026-79320 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-79320?
CVE-2026-79320 has a CVSS v3.1 base score of 6.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-79320?
No fix for CVE-2026-79320 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-79320 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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