CVE-2026-8559

MEDIUMNVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-05-14. NVD baseline CVSS 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.3Exploit: NoneExposed: 0

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

Integer overflow in Internationalization in Google Chrome on Windows prior to 148.0.7778.168 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: High)

CVSS v3
4.3
EG Score
4.3(medium)
EPSS
7.3%
KEV
Not listed

Published

May 14, 2026

Last Modified

May 19, 2026

Advisory Details (2)

Auto-updated Jun 27, 2026
No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/504629701
generic

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html

Vendor Advisories for CVE-2026-8559(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 9× in last 7d / 60× 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 118 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-8559?
CVE-2026-8559 is a medium vulnerability published on May 14, 2026. Integer overflow in Internationalization in Google Chrome on Windows prior to 148.0.7778.168 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: High)
When was CVE-2026-8559 disclosed?
CVE-2026-8559 was first published in the National Vulnerability Database on May 14, 2026, with the most recent update on May 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8559 actively exploited?
CVE-2026-8559 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8559?
CVE-2026-8559 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-8559?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8559, 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-2026-8559

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