CVE-2026-78838

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-09-08. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: Elevated riskExposed: 0

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

A reflected cross-site scripting (XSS) vulnerability in the grid_datasource.php component of AppNitro MachForm v30 allows attackers to execute arbitrary Javascript in the context of the victim's browser via injecting a crafted payload into the filter[filters][0][field] parameter.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity65% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
30%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 9, 2026

Advisory Details (2)

Auto-updated Sep 9, 2026
No patch confirmed yet.
generic

GitHub - nabeelmkhan/CVE-2026-78838 · GitHub

https://github.com/nabeelmkhan/CVE-2026-78838
generic

Packet Storm Security

https://packetstormsecurity.com

Vendor Advisories for CVE-2026-78838(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 / 52× 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 21:53 UTCEG score recompute
  2. 2026-09-24 21:53 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-23 22:13 UTCEG score recompute
  5. 2026-09-23 22:13 UTCGHSA enrichment
  6. 2026-09-23 17:54 UTCEPSS rescore
  7. 2026-09-22 23:45 UTCEG score recompute
  8. 2026-09-22 23:45 UTCGHSA enrichment
  9. 2026-09-22 16:01 UTCEPSS rescore
  10. 2026-09-22 01:16 UTCEG score recompute
  11. 2026-09-22 01:16 UTCGHSA enrichment
  12. 2026-09-21 21:09 UTCEPSS rescore
  13. 2026-09-21 02:46 UTCEG score recompute
  14. 2026-09-21 02:46 UTCGHSA enrichment
  15. 2026-09-20 20:16 UTCEPSS rescore
  16. 2026-09-20 04:17 UTCEG score recompute
  17. 2026-09-20 04:17 UTCGHSA enrichment
  18. 2026-09-19 05:48 UTCEG score recompute
  19. 2026-09-19 05:48 UTCGHSA enrichment
  20. 2026-09-18 19:28 UTCEPSS rescore
  21. 2026-09-18 07:19 UTCEG score recompute
  22. 2026-09-18 07:19 UTCGHSA enrichment
  23. 2026-09-17 08:50 UTCEG score recompute
  24. 2026-09-17 08:50 UTCGHSA enrichment
  25. 2026-09-16 14:08 UTCEPSS rescore
Show 27 more
  1. 2026-09-16 10:21 UTCEG score recompute
  2. 2026-09-16 10:21 UTCGHSA enrichment
  3. 2026-09-16 05:15 UTCEPSS rescore
  4. 2026-09-15 11:52 UTCEG score recompute
  5. 2026-09-15 11:52 UTCGHSA enrichment
  6. 2026-09-15 03:12 UTCEPSS rescore
  7. 2026-09-15 03:12 UTCEPSS rescore
  8. 2026-09-14 13:23 UTCEG score recompute
  9. 2026-09-14 13:23 UTCGHSA enrichment
  10. 2026-09-13 14:54 UTCGHSA enrichment
  11. 2026-09-12 16:20 UTCEG score recompute
  12. 2026-09-12 16:20 UTCGHSA enrichment
  13. 2026-09-11 17:51 UTCEG score recompute
  14. 2026-09-11 17:51 UTCGHSA enrichment
  15. 2026-09-11 14:53 UTCEPSS rescore
  16. 2026-09-11 14:53 UTCEPSS rescore
  17. 2026-09-10 19:22 UTCEG score recompute
  18. 2026-09-10 19:22 UTCGHSA enrichment
  19. 2026-09-09 20:49 UTCEG score recompute
  20. 2026-09-09 20:49 UTCGHSA enrichment
  21. 2026-09-09 19:55 UTCEG score recompute▲ 6.50
  22. 2026-09-09 19:55 UTCGHSA enrichment
  23. 2026-09-09 19:54 UTCMITRE cvelistV5CVSS v3 → 6.5 · severity → MEDIUM
  24. 2026-09-09 16:08 UTCGHSA enrichment
  25. 2026-09-08 14:26 UTCNVD update
  26. 2026-09-08 13:26 UTCEG score recompute
  27. 2026-09-08 13:24 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-78838?
CVE-2026-78838 is a medium vulnerability published on September 8, 2026. A reflected cross-site scripting (XSS) vulnerability in the grid_datasource.php component of AppNitro MachForm v30 allows attackers to execute arbitrary Javascript in the context of the victim's browser via injecting a crafted payload into the filter[filters][0][field] parameter.
When was CVE-2026-78838 disclosed?
CVE-2026-78838 was first published in the National Vulnerability Database on September 8, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78838 actively exploited?
CVE-2026-78838 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 69.9% of all scored CVEs.
What is the CVSS score of CVE-2026-78838?
CVE-2026-78838 has a CVSS v3.1 base score of 6.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-78838?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78838, 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

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