CVE-2026-18148

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-08-12. 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 week
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: None knownExposed: 0

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

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to inject arbitrary content into Navigator log files due to improper output neutralization for logs.

CVSS v3
4.3
EG Score
4.3(medium)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

August 12, 2026

Last Modified

August 17, 2026

Advisory Details (1)

Auto-updated Aug 12, 2026
No patch confirmed yet.
generic

Security Bulletin: IBM i is Affected By Multiple Vulnerabilities in Navigator for i

https://www.ibm.com/support/pages/node/7283292

Vendor Advisories for CVE-2026-18148(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 18× in last 7d / 80× 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.

Showing the most recent 100 of 107 total refreshes for this CVE.

  1. 2026-09-18 23:51 UTCEG score recompute
  2. 2026-09-18 23:51 UTCGHSA enrichment
  3. 2026-09-18 19:27 UTCEPSS rescore
  4. 2026-09-18 00:31 UTCEG score recompute
  5. 2026-09-18 00:31 UTCGHSA enrichment
  6. 2026-09-17 00:24 UTCEG score recompute
  7. 2026-09-17 00:24 UTCGHSA enrichment
  8. 2026-09-16 14:07 UTCEPSS rescore
  9. 2026-09-16 05:14 UTCEPSS rescore
  10. 2026-09-16 01:12 UTCEG score recompute
  11. 2026-09-16 01:12 UTCGHSA enrichment
  12. 2026-09-15 00:24 UTCGHSA enrichment
  13. 2026-09-14 01:12 UTCEG score recompute
  14. 2026-09-14 01:12 UTCGHSA enrichment
  15. 2026-09-13 16:46 UTCEPSS rescore
  16. 2026-09-13 02:01 UTCEG score recompute
  17. 2026-09-13 02:01 UTCGHSA enrichment
  18. 2026-09-12 15:00 UTCEPSS rescore
  19. 2026-09-12 02:48 UTCEG score recompute
  20. 2026-09-12 02:48 UTCGHSA enrichment
  21. 2026-09-11 14:52 UTCEPSS rescore
  22. 2026-09-11 09:36 UTCEPSS rescore
  23. 2026-09-11 03:36 UTCEG score recompute
  24. 2026-09-11 03:36 UTCGHSA enrichment
  25. 2026-09-10 09:34 UTCEPSS rescore
Show 75 more
  1. 2026-09-10 04:24 UTCGHSA enrichment
  2. 2026-09-09 05:12 UTCEG score recompute
  3. 2026-09-09 05:12 UTCGHSA enrichment
  4. 2026-09-08 22:00 UTCEPSS rescore
  5. 2026-09-08 05:03 UTCEG score recompute
  6. 2026-09-08 05:03 UTCGHSA enrichment
  7. 2026-09-07 16:01 UTCEPSS rescore
  8. 2026-09-07 05:50 UTCEG score recompute
  9. 2026-09-07 05:50 UTCGHSA enrichment
  10. 2026-09-06 13:47 UTCEPSS rescore
  11. 2026-09-06 06:21 UTCEG score recompute
  12. 2026-09-06 06:21 UTCGHSA enrichment
  13. 2026-09-05 07:06 UTCEG score recompute
  14. 2026-09-05 07:06 UTCGHSA enrichment
  15. 2026-09-04 07:53 UTCEG score recompute
  16. 2026-09-04 07:53 UTCGHSA enrichment
  17. 2026-09-04 05:06 UTCEPSS rescore
  18. 2026-09-03 05:55 UTCEG score recompute
  19. 2026-09-03 05:54 UTCGHSA enrichment
  20. 2026-09-02 14:11 UTCEPSS rescore
  21. 2026-09-02 06:18 UTCEG score recompute
  22. 2026-09-02 06:18 UTCGHSA enrichment
  23. 2026-09-01 13:53 UTCEPSS rescore
  24. 2026-09-01 07:05 UTCEG score recompute
  25. 2026-09-01 07:05 UTCGHSA enrichment
  26. 2026-09-01 04:39 UTCEPSS rescore
  27. 2026-08-31 07:51 UTCEG score recompute
  28. 2026-08-31 07:51 UTCGHSA enrichment
  29. 2026-08-30 19:17 UTCEPSS rescore
  30. 2026-08-30 08:39 UTCEG score recompute
  31. 2026-08-30 08:39 UTCGHSA enrichment
  32. 2026-08-30 01:22 UTCEPSS rescore
  33. 2026-08-29 09:24 UTCEG score recompute
  34. 2026-08-29 09:24 UTCGHSA enrichment
  35. 2026-08-28 21:41 UTCEPSS rescore
  36. 2026-08-28 10:12 UTCEG score recompute
  37. 2026-08-28 10:12 UTCGHSA enrichment
  38. 2026-08-27 14:25 UTCEPSS rescore
  39. 2026-08-27 10:08 UTCEG score recompute
  40. 2026-08-27 10:08 UTCGHSA enrichment
  41. 2026-08-26 14:46 UTCEPSS rescore
  42. 2026-08-26 10:56 UTCEG score recompute
  43. 2026-08-26 10:56 UTCGHSA enrichment
  44. 2026-08-25 13:48 UTCEPSS rescore
  45. 2026-08-25 11:44 UTCEG score recompute
  46. 2026-08-25 11:44 UTCGHSA enrichment
  47. 2026-08-24 12:30 UTCEG score recompute
  48. 2026-08-24 12:30 UTCGHSA enrichment
  49. 2026-08-23 13:18 UTCGHSA enrichment
  50. 2026-08-22 14:06 UTCEG score recompute
  51. 2026-08-22 14:05 UTCGHSA enrichment
  52. 2026-08-21 23:49 UTCEPSS rescore
  53. 2026-08-21 14:51 UTCGHSA enrichment
  54. 2026-08-20 15:39 UTCEG score recompute
  55. 2026-08-20 15:39 UTCGHSA enrichment
  56. 2026-08-19 17:03 UTCEPSS rescore
  57. 2026-08-19 16:27 UTCGHSA enrichment
  58. 2026-08-18 17:16 UTCEG score recompute
  59. 2026-08-18 17:15 UTCGHSA enrichment
  60. 2026-08-18 13:48 UTCEPSS rescore
  61. 2026-08-17 17:56 UTCEG score recompute
  62. 2026-08-17 17:56 UTCGHSA enrichment
  63. 2026-08-17 13:47 UTCEPSS rescore
  64. 2026-08-17 12:14 UTCEG score recompute
  65. 2026-08-17 12:14 UTCGHSA enrichment
  66. 2026-08-16 14:56 UTCEPSS rescore
  67. 2026-08-16 13:03 UTCEG score recompute
  68. 2026-08-16 13:03 UTCGHSA enrichment
  69. 2026-08-16 02:14 UTCEPSS rescore
  70. 2026-08-15 13:51 UTCEG score recompute
  71. 2026-08-15 13:51 UTCGHSA enrichment
  72. 2026-08-15 01:30 UTCEPSS rescore
  73. 2026-08-14 14:38 UTCEG score recompute
  74. 2026-08-14 14:38 UTCGHSA enrichment
  75. 2026-08-13 22:00 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-18148?
CVE-2026-18148 is a medium vulnerability published on August 12, 2026. IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to inject arbitrary content into Navigator log files due to improper output neutralization for logs.
When was CVE-2026-18148 disclosed?
CVE-2026-18148 was first published in the National Vulnerability Database on August 12, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18148 actively exploited?
CVE-2026-18148 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 88.9% of all scored CVEs.
What is the CVSS score of CVE-2026-18148?
CVE-2026-18148 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-18148?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18148, 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-2026-18148

Explore →

Is Your Infrastructure Affected by CVE-2026-18148?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs