CVE-2026-78971

MEDIUMPre-NVD 4.64.6—
EchelonGraph scoreHIGH confidence

Score 4.6 from GitHub Security Advisory published 2026-09-08. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
4.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.6Exploit: Elevated riskExposed: 0

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

In Halo <= 2.25.4, the plugin management feature allows users to install/update malicious plugins, which could let attackers execute any command with Halo process permissions.

CVSS v3
4.6
EG Score
4.6(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity46% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 14, 2026

Advisory Details (2)

Auto-updated Sep 14, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

CVE Submission——Halo CMS Plugin Upload RCE · Issue #1 · LING12138-sg/MyCVE-Report · GitHub

https://github.com/LING12138-sg/MyCVE-Report/issues/1
generic

GitHub - halo-dev/halo: Halo 是一款强大易用的开源建站工具，从个人博客、知识库，到企业官网、在线商城，Halo 都能助您轻松实现，一站式满足您的多样化建站需求。 · GitHub

https://github.com/halo-dev/halo

Vendor Advisories for CVE-2026-78971(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 / 38× 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 18:22 UTCEG score recompute
  2. 2026-09-24 18:22 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-23 17:33 UTCGHSA enrichment
  6. 2026-09-22 17:17 UTCEG score recompute
  7. 2026-09-22 17:17 UTCGHSA enrichment
  8. 2026-09-22 16:01 UTCEPSS rescore
  9. 2026-09-21 21:09 UTCEPSS rescore
  10. 2026-09-21 17:07 UTCEG score recompute
  11. 2026-09-21 17:07 UTCGHSA enrichment
  12. 2026-09-20 20:16 UTCEPSS rescore
  13. 2026-09-20 16:33 UTCGHSA enrichment
  14. 2026-09-19 16:24 UTCEG score recompute
  15. 2026-09-19 16:24 UTCGHSA enrichment
  16. 2026-09-18 19:28 UTCEPSS rescore
  17. 2026-09-18 16:14 UTCEG score recompute
  18. 2026-09-18 16:14 UTCGHSA enrichment
  19. 2026-09-17 15:55 UTCGHSA enrichment
  20. 2026-09-16 15:45 UTCEG score recompute
  21. 2026-09-16 15:45 UTCGHSA enrichment
  22. 2026-09-16 14:08 UTCEPSS rescore
  23. 2026-09-16 05:15 UTCEPSS rescore
  24. 2026-09-15 15:35 UTCEG score recompute
  25. 2026-09-15 15:35 UTCGHSA enrichment
Show 13 more
  1. 2026-09-15 03:12 UTCEPSS rescore
  2. 2026-09-15 03:12 UTCEPSS rescore
  3. 2026-09-14 15:22 UTCGHSA enrichment
  4. 2026-09-14 14:50 UTCEG score recompute▲ 4.60
  5. 2026-09-14 14:50 UTCGHSA enrichment
  6. 2026-09-14 14:49 UTCMITRE cvelistV5CVSS v3 → 4.6 · severity → MEDIUM
  7. 2026-09-12 21:16 UTCEG score recompute
  8. 2026-09-12 21:16 UTCGHSA enrichment
  9. 2026-09-09 16:08 UTCGHSA enrichment
  10. 2026-09-08 21:53 UTCGHSA enrichment
  11. 2026-09-08 21:31 UTCNVD update
  12. 2026-09-08 20:45 UTCEG score recompute
  13. 2026-09-08 20:44 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-78971?
CVE-2026-78971 is a medium vulnerability published on September 8, 2026. In Halo <= 2.25.4, the plugin management feature allows users to install/update malicious plugins, which could let attackers execute any command with Halo process permissions.
When was CVE-2026-78971 disclosed?
CVE-2026-78971 was first published in the National Vulnerability Database on September 8, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78971 actively exploited?
CVE-2026-78971 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 87.2% of all scored CVEs.
What is the CVSS score of CVE-2026-78971?
CVE-2026-78971 has a CVSS v3.1 base score of 4.6 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-78971?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78971, 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

Explore the affected products and dependency analysis for CVE-2026-78971

Explore →

Is Your Infrastructure Affected by CVE-2026-78971?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs