CVE-2026-72583

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH confidence

Score 5.4 from GitHub Security Advisory published 2026-08-10. a secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

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

A stored cross-site scripting (XSS) vulnerability in fastschema through v0.15.1 allows a low-privileged authenticated user to upload an SVG file containing malicious JavaScript by bypassing the MIME type allow-list check.

CVSS v3
5.4
EG Score
5.4(high)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 10, 2026

Advisory Details (1)

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

GitHub - fastschema/fastschema: All-in-One Backend as a Service with Headless CMS Power · GitHub

https://github.com/fastschema/fastschema

Vendor Advisories for CVE-2026-72583(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 23× in last 7d / 39× 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. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 14:17 UTCEG score recompute
  3. 2026-08-20 14:17 UTCGHSA enrichment
  4. 2026-08-19 17:04 UTCEPSS rescore
  5. 2026-08-19 15:57 UTCGHSA enrichment
  6. 2026-08-18 18:10 UTCEG score recompute
  7. 2026-08-18 18:10 UTCGHSA enrichment
  8. 2026-08-18 13:49 UTCEPSS rescore
  9. 2026-08-18 13:49 UTCEPSS rescore
  10. 2026-08-17 20:23 UTCEG score recompute
  11. 2026-08-17 20:23 UTCGHSA enrichment
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-16 22:39 UTCEG score recompute
  14. 2026-08-16 22:39 UTCGHSA enrichment
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 02:15 UTCEPSS rescore
  18. 2026-08-16 00:55 UTCGHSA enrichment
  19. 2026-08-15 03:11 UTCEG score recompute
  20. 2026-08-15 03:11 UTCGHSA enrichment
  21. 2026-08-15 01:31 UTCEPSS rescore
  22. 2026-08-14 05:27 UTCEG score recompute
  23. 2026-08-14 05:27 UTCGHSA enrichment
  24. 2026-08-13 22:00 UTCEPSS rescore
  25. 2026-08-13 07:43 UTCEG score recompute
Show 14 more
  1. 2026-08-13 07:43 UTCGHSA enrichment
  2. 2026-08-12 13:51 UTCEPSS rescore
  3. 2026-08-12 09:58 UTCEG score recompute
  4. 2026-08-12 09:58 UTCGHSA enrichment
  5. 2026-08-11 12:13 UTCGHSA enrichment
  6. 2026-08-10 14:29 UTCEG score recompute
  7. 2026-08-10 14:29 UTCGHSA enrichment
  8. 2026-08-10 13:36 UTCEG score recompute
  9. 2026-08-10 13:36 UTCGHSA enrichment
  10. 2026-08-10 12:23 UTCEG score recompute
  11. 2026-08-10 12:02 UTCEG score recompute
  12. 2026-08-10 11:19 UTCEG score recompute
  13. 2026-08-10 10:57 UTCEG score recompute
  14. 2026-08-10 10:56 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-72583?
CVE-2026-72583 is a medium vulnerability published on August 10, 2026. A stored cross-site scripting (XSS) vulnerability in fastschema through v0.15.1 allows a low-privileged authenticated user to upload an SVG file containing malicious JavaScript by bypassing the MIME type allow-list check.
When was CVE-2026-72583 disclosed?
CVE-2026-72583 was first published in the National Vulnerability Database on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72583 actively exploited?
CVE-2026-72583 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 95.3% of all scored CVEs.
What is the CVSS score of CVE-2026-72583?
CVE-2026-72583 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-72583?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72583, 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-2026-72583

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