CVE-2026-34497

MEDIUMNVD 5.45.4—
EchelonGraph scoreHIGH confidence

Score 5.4 from GitHub Security Advisory published 2026-07-31. NVD baseline CVSS 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
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.

Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in Johnson Controls FM Systems Employee allows Cross-Site Scripting (XSS).

This issue affects FM Systems Employee: before 2025.3.1.

CVSS v3
5.4
EG Score
5.4(high)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

July 31, 2026

Last Modified

August 10, 2026

Advisory Details (1)

Auto-updated Jul 31, 2026
Patch available.
generic Patch Available

Security Advisories | Johnson Controls

https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories

Vendor Advisories for CVE-2026-34497(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 / 58× 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 06:39 UTCEG score recompute
  2. 2026-08-20 06:39 UTCGHSA enrichment
  3. 2026-08-19 17:03 UTCEPSS rescore
  4. 2026-08-19 05:26 UTCEG score recompute
  5. 2026-08-19 05:26 UTCGHSA enrichment
  6. 2026-08-18 13:48 UTCEPSS rescore
  7. 2026-08-18 04:14 UTCEG score recompute
  8. 2026-08-18 04:14 UTCGHSA enrichment
  9. 2026-08-17 13:47 UTCEPSS rescore
  10. 2026-08-17 02:59 UTCEG score recompute
  11. 2026-08-17 02:59 UTCGHSA enrichment
  12. 2026-08-16 14:56 UTCEPSS rescore
  13. 2026-08-16 02:14 UTCEPSS rescore
  14. 2026-08-16 01:47 UTCEG score recompute
  15. 2026-08-16 01:47 UTCGHSA enrichment
  16. 2026-08-15 01:30 UTCEPSS rescore
  17. 2026-08-15 00:34 UTCGHSA enrichment
  18. 2026-08-13 23:23 UTCEG score recompute
  19. 2026-08-13 23:23 UTCGHSA enrichment
  20. 2026-08-13 22:00 UTCEPSS rescore
  21. 2026-08-12 22:11 UTCEG score recompute
  22. 2026-08-12 22:11 UTCGHSA enrichment
  23. 2026-08-12 13:50 UTCEPSS rescore
  24. 2026-08-11 20:59 UTCEG score recompute
  25. 2026-08-11 20:59 UTCGHSA enrichment
Show 33 more
  1. 2026-08-11 00:00 UTCEPSS rescore
  2. 2026-08-10 19:47 UTCEG score recompute▲ 0.60
  3. 2026-08-10 19:47 UTCGHSA enrichment
  4. 2026-08-10 19:47 UTCNVD updateCVSS v3 → 5.4
  5. 2026-08-09 19:26 UTCEG score recompute
  6. 2026-08-09 19:26 UTCGHSA enrichment
  7. 2026-08-09 13:46 UTCEPSS rescore
  8. 2026-08-08 18:15 UTCEG score recompute
  9. 2026-08-08 18:15 UTCGHSA enrichment
  10. 2026-08-08 16:37 UTCEPSS rescore
  11. 2026-08-07 17:02 UTCEG score recompute
  12. 2026-08-07 17:02 UTCGHSA enrichment
  13. 2026-08-06 15:50 UTCEG score recompute
  14. 2026-08-06 15:50 UTCGHSA enrichment
  15. 2026-08-06 13:46 UTCEPSS rescore
  16. 2026-08-06 01:29 UTCEG score recompute
  17. 2026-08-06 01:29 UTCGHSA enrichment
  18. 2026-08-05 19:17 UTCEPSS rescore
  19. 2026-08-05 00:17 UTCEG score recompute
  20. 2026-08-05 00:17 UTCGHSA enrichment
  21. 2026-08-04 15:10 UTCEPSS rescore
  22. 2026-08-04 10:38 UTCEPSS rescore
  23. 2026-08-03 23:00 UTCEG score recompute
  24. 2026-08-03 23:00 UTCGHSA enrichment
  25. 2026-08-03 10:36 UTCEPSS rescore
  26. 2026-08-02 21:48 UTCEG score recompute
  27. 2026-08-02 21:48 UTCGHSA enrichment
  28. 2026-08-02 02:27 UTCEPSS rescore
  29. 2026-08-01 20:36 UTCGHSA enrichment
  30. 2026-07-31 19:24 UTCGHSA enrichment
  31. 2026-07-31 18:19 UTCEG score recompute
  32. 2026-07-31 18:04 UTCEG score recompute
  33. 2026-07-31 18:03 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-34497?
CVE-2026-34497 is a medium vulnerability published on July 31, 2026. Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in Johnson Controls FM Systems Employee allows Cross-Site Scripting (XSS). This issue affects FM Systems Employee: before 2025.3.1.
When was CVE-2026-34497 disclosed?
CVE-2026-34497 was first published in the National Vulnerability Database on July 31, 2026, with the most recent update 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-2026-34497 actively exploited?
CVE-2026-34497 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 85.4% of all scored CVEs.
What is the CVSS score of CVE-2026-34497?
CVE-2026-34497 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-34497?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-34497, 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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