CVE-2026-18534

HIGHPre-NVD 7.47.4—
EchelonGraph scoreMEDIUM confidence

Score 7.4 from GitHub Security Advisory (severity: HIGH) published 2026-08-18. a secondary CVSS source baseline 7.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.4Exploit: None knownExposed: 0

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

ArcSearch for iOS versions prior to 1.48.0 could keep the address bar hidden after a page-initiated scroll, allowing attacker-controlled content to imitate browser interface elements and increasing spoofing risk.

CVSS v3
7.4
EG Score
7.4(medium)
EG Risk
33(Track)
EG Risk 33/100SSVC: 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
Severity74% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

August 18, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Aug 18, 2026
No patch confirmed yet.
generic

Security Bulletin

https://arc.net/security/bulletins#cve-2026-18534-address-bar-spoofing-risk-in-affected-ios-versions-of-arc-search

Vendor Advisories for CVE-2026-18534(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 23× in last 7d / 104× 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 117 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-18534?
CVE-2026-18534 is a high vulnerability published on August 18, 2026. ArcSearch for iOS versions prior to 1.48.0 could keep the address bar hidden after a page-initiated scroll, allowing attacker-controlled content to imitate browser interface elements and increasing spoofing risk.
When was CVE-2026-18534 disclosed?
CVE-2026-18534 was first published in the National Vulnerability Database on August 18, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18534 actively exploited?
CVE-2026-18534 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 75.9% of all scored CVEs.
What is the CVSS score of CVE-2026-18534?
CVE-2026-18534 has a CVSS v3 base score of 7.4 (NVD).
How do I remediate CVE-2026-18534?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18534, 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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