CVE-2026-19646

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-11. a secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.1Exploit: None knownExposed: 0

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

IBM Common Licensing Agent 9.0, Agent 9.0.0.1, Agent 9.0.0.2, ART 9.0, ART 9.0.0.1, and ART 9.0.0.2 could allow a remote attacker to redirect users to an arbitrary domain due to improper validation of the HTTP Host header.

CVSS v3
9.1
EG Score
9.1(high)
EG Risk
56(Track)
EG Risk 56/100SSVC: 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
Severity91% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

September 10, 2026

Last Modified

September 11, 2026

Advisory Details (1)

Auto-updated Sep 15, 2026
No patch confirmed yet.
generic

Security Bulletin: Multiple vulnerabilities affect IBM License Key Server Administration and Reporting Tool and IBM LKS Administration Agent

https://www.ibm.com/support/pages/node/7286490

Vendor Advisories for CVE-2026-19646(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 53× in last 7d / 71× 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. 2026-09-19 04:14 UTCGHSA enrichment
  2. 2026-09-19 00:13 UTCGHSA enrichment
  3. 2026-09-18 20:13 UTCEG score recompute
  4. 2026-09-18 20:13 UTCGHSA enrichment
  5. 2026-09-18 19:27 UTCEPSS rescore
  6. 2026-09-18 16:13 UTCGHSA enrichment
  7. 2026-09-18 11:54 UTCGHSA enrichment
  8. 2026-09-18 07:54 UTCGHSA enrichment
  9. 2026-09-18 03:54 UTCGHSA enrichment
  10. 2026-09-17 23:54 UTCGHSA enrichment
  11. 2026-09-17 19:45 UTCEG score recompute
  12. 2026-09-17 19:45 UTCGHSA enrichment
  13. 2026-09-17 15:42 UTCGHSA enrichment
  14. 2026-09-17 11:41 UTCGHSA enrichment
  15. 2026-09-17 07:41 UTCGHSA enrichment
  16. 2026-09-17 03:39 UTCGHSA enrichment
  17. 2026-09-16 23:38 UTCGHSA enrichment
  18. 2026-09-16 19:37 UTCGHSA enrichment
  19. 2026-09-16 15:37 UTCEG score recompute
  20. 2026-09-16 15:37 UTCGHSA enrichment
  21. 2026-09-16 14:07 UTCEPSS rescore
  22. 2026-09-16 11:36 UTCGHSA enrichment
  23. 2026-09-16 07:35 UTCEG score recompute
  24. 2026-09-16 07:35 UTCGHSA enrichment
  25. 2026-09-16 05:14 UTCEPSS rescore
Show 46 more
  1. 2026-09-16 03:32 UTCGHSA enrichment
  2. 2026-09-15 23:31 UTCGHSA enrichment
  3. 2026-09-15 19:31 UTCGHSA enrichment
  4. 2026-09-15 15:30 UTCGHSA enrichment
  5. 2026-09-15 11:30 UTCGHSA enrichment
  6. 2026-09-15 07:29 UTCGHSA enrichment
  7. 2026-09-15 03:28 UTCEG score recompute
  8. 2026-09-15 03:28 UTCGHSA enrichment
  9. 2026-09-14 23:28 UTCGHSA enrichment
  10. 2026-09-14 19:24 UTCGHSA enrichment
  11. 2026-09-14 15:19 UTCGHSA enrichment
  12. 2026-09-14 11:18 UTCGHSA enrichment
  13. 2026-09-14 07:18 UTCGHSA enrichment
  14. 2026-09-14 03:18 UTCGHSA enrichment
  15. 2026-09-13 23:18 UTCGHSA enrichment
  16. 2026-09-13 19:18 UTCEG score recompute
  17. 2026-09-13 19:18 UTCGHSA enrichment
  18. 2026-09-13 16:46 UTCEPSS rescore
  19. 2026-09-13 15:17 UTCGHSA enrichment
  20. 2026-09-13 11:17 UTCGHSA enrichment
  21. 2026-09-13 07:16 UTCGHSA enrichment
  22. 2026-09-13 03:16 UTCGHSA enrichment
  23. 2026-09-12 23:16 UTCGHSA enrichment
  24. 2026-09-12 19:15 UTCGHSA enrichment
  25. 2026-09-12 15:14 UTCEG score recompute
  26. 2026-09-12 15:14 UTCGHSA enrichment
  27. 2026-09-12 15:00 UTCEPSS rescore
  28. 2026-09-12 11:14 UTCGHSA enrichment
  29. 2026-09-12 07:14 UTCGHSA enrichment
  30. 2026-09-12 03:13 UTCGHSA enrichment
  31. 2026-09-11 23:11 UTCGHSA enrichment
  32. 2026-09-11 18:34 UTCEG score recompute
  33. 2026-09-11 18:34 UTCGHSA enrichment
  34. 2026-09-11 17:19 UTCEG score recompute
  35. 2026-09-11 17:19 UTCGHSA enrichment
  36. 2026-09-11 15:07 UTCEG score recompute
  37. 2026-09-11 15:07 UTCGHSA enrichment
  38. 2026-09-11 14:52 UTCEPSS rescore
  39. 2026-09-11 14:27 UTCGHSA enrichment
  40. 2026-09-11 10:26 UTCGHSA enrichment
  41. 2026-09-11 06:19 UTCGHSA enrichment
  42. 2026-09-11 02:19 UTCEG score recompute
  43. 2026-09-11 02:19 UTCGHSA enrichment
  44. 2026-09-10 22:19 UTCEG score recompute
  45. 2026-09-10 22:11 UTCEG score recompute
  46. 2026-09-10 22:09 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-19646?
CVE-2026-19646 is a critical vulnerability published on September 10, 2026. IBM Common Licensing Agent 9.0, Agent 9.0.0.1, Agent 9.0.0.2, ART 9.0, ART 9.0.0.1, and ART 9.0.0.2 could allow a remote attacker to redirect users to an arbitrary domain due to improper validation of the HTTP Host header.
When was CVE-2026-19646 disclosed?
CVE-2026-19646 was first published in the National Vulnerability Database on September 10, 2026, with the most recent update on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19646 actively exploited?
CVE-2026-19646 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 56.9% of all scored CVEs.
What is the CVSS score of CVE-2026-19646?
CVE-2026-19646 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-19646?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19646, 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-2026-19646

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