CVE-2026-86278

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory (severity: LOW) published 2026-09-07. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: Elevated riskExposed: 0

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

A vulnerability was found in SourceCodester Syllabus-Aligned Learning Management & Examination System 1.0. The affected element is an unknown function of the file manage_subjects.php. The manipulation of the argument msg/title/content results in cross site scripting. The attack may be performed from remote. The exploit has been made public and could be used.

CVSS v3
4.3
EG Score
4.3(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity43% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

September 7, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Sep 7, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Free Source Code Projects and Tutorials - sourcecodester.com

https://www.sourcecodester.com/
generic🟡 PoC Available

Vulnerability-Reports/Syllabus Aligned Learning Management Examination System/VULN-05-XSS-Reflected-Stored.md at master · hackliu/Vulnerability-Reports · GitHub

https://github.com/hackliu/Vulnerability-Reports/blob/master/Syllabus%20Aligned%20Learning%20Management%20Examination%20System/VULN-05-XSS-Reflected-Stored.md

Vendor Advisories for CVE-2026-86278(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 20× in last 7d / 61× 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 20:22 UTCEG score recompute
  2. 2026-09-24 20:22 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-23 21:31 UTCEG score recompute
  5. 2026-09-23 21:31 UTCGHSA enrichment
  6. 2026-09-23 17:54 UTCEPSS rescore
  7. 2026-09-22 22:42 UTCEG score recompute
  8. 2026-09-22 22:42 UTCGHSA enrichment
  9. 2026-09-22 16:01 UTCEPSS rescore
  10. 2026-09-21 23:53 UTCEG score recompute
  11. 2026-09-21 23:53 UTCGHSA enrichment
  12. 2026-09-21 21:09 UTCEPSS rescore
  13. 2026-09-21 01:05 UTCEG score recompute
  14. 2026-09-21 01:04 UTCGHSA enrichment
  15. 2026-09-20 20:16 UTCEPSS rescore
  16. 2026-09-20 02:14 UTCEG score recompute
  17. 2026-09-20 02:14 UTCGHSA enrichment
  18. 2026-09-19 03:24 UTCEG score recompute
  19. 2026-09-19 03:24 UTCGHSA enrichment
  20. 2026-09-18 19:28 UTCEPSS rescore
  21. 2026-09-18 04:35 UTCEG score recompute
  22. 2026-09-18 04:35 UTCGHSA enrichment
  23. 2026-09-17 19:32 UTCEPSS rescore
  24. 2026-09-17 05:44 UTCEG score recompute
  25. 2026-09-17 05:44 UTCGHSA enrichment
Show 36 more
  1. 2026-09-16 14:09 UTCEPSS rescore
  2. 2026-09-16 06:51 UTCEG score recompute
  3. 2026-09-16 06:51 UTCGHSA enrichment
  4. 2026-09-16 05:15 UTCEPSS rescore
  5. 2026-09-15 08:02 UTCEG score recompute
  6. 2026-09-15 08:02 UTCGHSA enrichment
  7. 2026-09-15 03:12 UTCEPSS rescore
  8. 2026-09-15 03:12 UTCEPSS rescore
  9. 2026-09-14 09:13 UTCEG score recompute
  10. 2026-09-14 09:13 UTCGHSA enrichment
  11. 2026-09-13 10:24 UTCEG score recompute
  12. 2026-09-13 10:24 UTCGHSA enrichment
  13. 2026-09-12 11:35 UTCEG score recompute
  14. 2026-09-12 11:35 UTCGHSA enrichment
  15. 2026-09-11 14:53 UTCEPSS rescore
  16. 2026-09-11 14:53 UTCEPSS rescore
  17. 2026-09-11 12:46 UTCEG score recompute
  18. 2026-09-11 12:45 UTCGHSA enrichment
  19. 2026-09-10 13:43 UTCEG score recompute
  20. 2026-09-10 13:43 UTCGHSA enrichment
  21. 2026-09-09 14:54 UTCEG score recompute
  22. 2026-09-09 14:54 UTCGHSA enrichment
  23. 2026-09-08 22:01 UTCEPSS rescore
  24. 2026-09-08 16:03 UTCEG score recompute
  25. 2026-09-08 16:02 UTCGHSA enrichment
  26. 2026-09-08 15:27 UTCNVD updateCVSS v4 → 2.1
  27. 2026-09-08 15:00 UTCEG score recompute
  28. 2026-09-08 14:59 UTCGHSA enrichment
  29. 2026-09-08 14:44 UTCMITRE cvelistV5CVSS v4 → 5.3
  30. 2026-09-08 13:59 UTCGHSA enrichment
  31. 2026-09-08 06:21 UTCEG score recompute
  32. 2026-09-08 06:20 UTCGHSA enrichment
  33. 2026-09-07 07:31 UTCEG score recompute
  34. 2026-09-07 07:25 UTCNVD updateCVSS v4 → 2.1
  35. 2026-09-07 07:07 UTCEG score recompute
  36. 2026-09-07 07:06 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-86278?
CVE-2026-86278 is a medium vulnerability published on September 7, 2026. A vulnerability was found in SourceCodester Syllabus-Aligned Learning Management & Examination System 1.0. The affected element is an unknown function of the file manage_subjects.php. The manipulation of the argument msg/title/content results in cross site scripting. The attack may be performed…
When was CVE-2026-86278 disclosed?
CVE-2026-86278 was first published in the National Vulnerability Database on September 7, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86278 actively exploited?
CVE-2026-86278 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 62.0% of all scored CVEs.
What is the CVSS score of CVE-2026-86278?
CVE-2026-86278 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-86278?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86278, 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-2026-86278

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