CVE-2026-67921

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreHIGH confidence

Score 9.3 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-18. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 5 sources updated this weekElevated
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.3Exploit: Elevated riskExposed: 0

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

Cross-Site Request Forgery (CSRF) vulnerability exists in Halo CMS versions up to 2.25.4 via the CorsConfigurer.java and the CsrfConfigurer.java components. This allows a remote attacker to execute arbitrary code.

CVSS v3
9.3
EG Score
9.3(high)
EG Risk
58(Track*)
EG Risk 58/100SSVC: 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
Severity93% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

August 18, 2026

Last Modified

August 20, 2026

Advisory Details (2)

Auto-updated Aug 20, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

CVE-2026-67921.md · GitHub

https://gist.github.com/unpredictable21/01b053bcf8bb5a3c557df92f5c2c3c30
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-2026-67921(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 15× in last 7d / 15× 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. 2026-08-21 09:19 UTCGHSA enrichment
  2. 2026-08-21 05:23 UTCGHSA enrichment
  3. 2026-08-21 01:27 UTCEG score recompute
  4. 2026-08-21 01:27 UTCGHSA enrichment
  5. 2026-08-20 22:56 UTCEPSS rescore
  6. 2026-08-20 21:32 UTCEG score recompute
  7. 2026-08-20 21:32 UTCGHSA enrichment
  8. 2026-08-20 17:35 UTCGHSA enrichment
  9. 2026-08-20 17:17 UTCEG score recompute▲ 9.30
  10. 2026-08-20 17:17 UTCGHSA enrichment
  11. 2026-08-20 17:17 UTCMITRE cvelistV5CVSS v3 → 9.3 · severity → CRITICAL
  12. 2026-08-19 17:04 UTCEPSS rescore
  13. 2026-08-18 18:22 UTCNVD update
  14. 2026-08-18 17:55 UTCEG score recompute
  15. 2026-08-18 17:54 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-67921?
CVE-2026-67921 is a critical vulnerability published on August 18, 2026. Cross-Site Request Forgery (CSRF) vulnerability exists in Halo CMS versions up to 2.25.4 via the CorsConfigurer.java and the CsrfConfigurer.java components. This allows a remote attacker to execute arbitrary code.
When was CVE-2026-67921 disclosed?
CVE-2026-67921 was first published in the National Vulnerability Database on August 18, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67921 actively exploited?
CVE-2026-67921 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 84.5% of all scored CVEs.
What is the CVSS score of CVE-2026-67921?
CVE-2026-67921 has a CVSS v3.1 base score of 9.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-67921?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-67921, 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-2026-67921

Explore →

Is Your Infrastructure Affected by CVE-2026-67921?

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

Start Free Scan →Browse All CVEs