CVE-2026-44401

MEDIUMPre-NVD 4.84.8—
EchelonGraph scoreHIGH confidence

Score 4.8 from GitHub Security Advisory published 2026-08-10. the CNA's CVSS baseline 4.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this week
4.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.8Exploit: None knownExposed: 0

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

Typemill CMS version 2.x contains a persistent cross-site scripting vulnerability in the Markdown parser extension that allows authenticated users with theme-configuration access to inject malicious JavaScript URIs by supplying unsanitized href values in Markdown links. Attackers can craft Markdown links using the javascript: scheme through ParsedownExtension.php or TwigMarkdownExtension.php, storing a persistent payload that executes in the browser of every visitor who clicks the link, enabling session cookie theft, authenticated request forgery, and credential harvesting.

CVSS v3
4.8
EG Score
4.8(high)
EG Risk
22(Track)
EG Risk 22/100SSVC: 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
Severity48% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 14, 2026

Advisory Details (2)

Auto-updated Aug 10, 2026
No patch confirmed yet.
generic

Typemill CMS 2.x Persistent XSS via Markdown javascript URI | Advisories | VulnCheck

https://www.vulncheck.com/advisories/typemill-cms-2-x-persistent-xss-via-markdown-javascript-uri
generic

GitHub - typemill/typemill: Typemill is a flat-file CMS based on Markdown and designed for informational websites like documentation, manuals, and handbooks. · GitHub

https://github.com/typemill/typemill

Vendor Advisories for CVE-2026-44401(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 / 33× 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. 2026-08-19 22:42 UTCEG score recompute
  2. 2026-08-19 22:42 UTCGHSA enrichment
  3. 2026-08-19 17:04 UTCEPSS rescore
  4. 2026-08-18 21:39 UTCEG score recompute
  5. 2026-08-18 21:39 UTCGHSA enrichment
  6. 2026-08-18 13:48 UTCEPSS rescore
  7. 2026-08-17 20:18 UTCEG score recompute
  8. 2026-08-17 20:18 UTCGHSA enrichment
  9. 2026-08-17 13:47 UTCEPSS rescore
  10. 2026-08-16 19:16 UTCEG score recompute
  11. 2026-08-16 19:16 UTCGHSA enrichment
  12. 2026-08-16 14:56 UTCEPSS rescore
  13. 2026-08-16 02:14 UTCEPSS rescore
  14. 2026-08-15 18:13 UTCEG score recompute
  15. 2026-08-15 18:13 UTCGHSA enrichment
  16. 2026-08-15 01:30 UTCEPSS rescore
  17. 2026-08-14 17:10 UTCEG score recompute
  18. 2026-08-14 17:10 UTCGHSA enrichment
  19. 2026-08-13 22:00 UTCEPSS rescore
  20. 2026-08-13 16:39 UTCGHSA enrichment
  21. 2026-08-12 15:27 UTCEG score recompute
  22. 2026-08-12 15:27 UTCGHSA enrichment
  23. 2026-08-12 13:51 UTCEPSS rescore
  24. 2026-08-11 14:24 UTCEG score recompute
  25. 2026-08-11 14:24 UTCGHSA enrichment
Show 8 more
  1. 2026-08-11 14:05 UTCEG score recompute
  2. 2026-08-11 14:05 UTCGHSA enrichment
  3. 2026-08-11 14:03 UTCGHSA enrichment
  4. 2026-08-11 13:43 UTCEPSS rescore
  5. 2026-08-10 20:29 UTCEG score recompute
  6. 2026-08-10 20:05 UTCEG score recompute
  7. 2026-08-10 19:45 UTCEG score recompute
  8. 2026-08-10 19:44 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-44401?
CVE-2026-44401 is a medium vulnerability published on August 10, 2026. Typemill CMS version 2.x contains a persistent cross-site scripting vulnerability in the Markdown parser extension that allows authenticated users with theme-configuration access to inject malicious JavaScript URIs by supplying unsanitized href values in Markdown links. Attackers can craft Markdown…
When was CVE-2026-44401 disclosed?
CVE-2026-44401 was first published in the National Vulnerability Database on August 10, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44401 actively exploited?
CVE-2026-44401 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 85.9% of all scored CVEs.
What is the CVSS score of CVE-2026-44401?
CVE-2026-44401 has a CVSS v4.0 base score of 4.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-44401?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44401, 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-2026-44401

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