CVE-2026-17858

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-07-30. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 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.

Uninitialized Use in WebNN in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)

CVSS v3
4.3
Vendor severity
MEDIUMper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: Medium)
EG Score
4.3(high)
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
14%
KEV
Not listed

Published

July 30, 2026

Last Modified

August 3, 2026

Advisory Details (2)

Auto-updated Jul 30, 2026
No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/520191468
generic

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html

Vendor Advisories for CVE-2026-17858(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
chromium100.0.4896.127-1 ... 99.0.4844.84-1~deb11u1 (500 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
chromium113.0.5672.126-1 ... 151.0.7922.47-1 (394 versions)151.0.7922.71-1~deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
chromium138.0.7204.183-1 ... 151.0.7922.71-1~deb12u1 (160 versions)151.0.7922.71-1~deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
chromium138.0.7204.183-1 ... 151.0.7922.71-1~deb13u1 (162 versions)——

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 26× in last 7d / 103× 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 103 total refreshes for this CVE.

  1. 2026-08-25 13:48 UTCEPSS rescore
  2. 2026-08-25 13:34 UTCEG score recompute
  3. 2026-08-25 13:34 UTCVendor advisory
  4. 2026-08-25 13:34 UTCGHSA enrichment
  5. 2026-08-24 12:38 UTCEG score recompute
  6. 2026-08-24 12:38 UTCVendor advisory
  7. 2026-08-24 12:38 UTCGHSA enrichment
  8. 2026-08-23 11:43 UTCEG score recompute
  9. 2026-08-23 11:43 UTCVendor advisory
  10. 2026-08-23 11:43 UTCGHSA enrichment
  11. 2026-08-23 00:19 UTCEPSS rescore
  12. 2026-08-22 10:48 UTCEG score recompute
  13. 2026-08-22 10:48 UTCVendor advisory
  14. 2026-08-22 10:48 UTCGHSA enrichment
  15. 2026-08-21 23:49 UTCEPSS rescore
  16. 2026-08-21 09:52 UTCEG score recompute
  17. 2026-08-21 09:52 UTCVendor advisory
  18. 2026-08-21 09:52 UTCGHSA enrichment
  19. 2026-08-20 22:55 UTCEPSS rescore
  20. 2026-08-20 08:57 UTCEG score recompute
  21. 2026-08-20 08:57 UTCVendor advisory
  22. 2026-08-20 08:57 UTCGHSA enrichment
  23. 2026-08-19 17:03 UTCEPSS rescore
  24. 2026-08-19 08:01 UTCEG score recompute
  25. 2026-08-19 08:01 UTCVendor advisory
Show 75 more
  1. 2026-08-19 08:01 UTCGHSA enrichment
  2. 2026-08-18 13:48 UTCEPSS rescore
  3. 2026-08-18 07:06 UTCEG score recompute
  4. 2026-08-18 07:05 UTCGHSA enrichment
  5. 2026-08-17 13:47 UTCEPSS rescore
  6. 2026-08-17 06:05 UTCEG score recompute
  7. 2026-08-17 06:05 UTCVendor advisory
  8. 2026-08-17 06:05 UTCGHSA enrichment
  9. 2026-08-16 14:56 UTCEPSS rescore
  10. 2026-08-16 05:10 UTCEG score recompute
  11. 2026-08-16 05:10 UTCVendor advisory
  12. 2026-08-16 05:10 UTCGHSA enrichment
  13. 2026-08-16 02:14 UTCEPSS rescore
  14. 2026-08-15 04:14 UTCEG score recompute
  15. 2026-08-15 04:14 UTCVendor advisory
  16. 2026-08-15 04:14 UTCGHSA enrichment
  17. 2026-08-15 01:30 UTCEPSS rescore
  18. 2026-08-14 03:17 UTCEG score recompute
  19. 2026-08-14 03:17 UTCVendor advisory
  20. 2026-08-14 03:17 UTCGHSA enrichment
  21. 2026-08-13 22:00 UTCEPSS rescore
  22. 2026-08-13 02:21 UTCEG score recompute
  23. 2026-08-13 02:21 UTCGHSA enrichment
  24. 2026-08-12 13:50 UTCEPSS rescore
  25. 2026-08-12 01:26 UTCEG score recompute
  26. 2026-08-12 01:26 UTCVendor advisory
  27. 2026-08-12 01:26 UTCGHSA enrichment
  28. 2026-08-11 13:42 UTCEPSS rescore
  29. 2026-08-11 00:31 UTCEG score recompute
  30. 2026-08-11 00:31 UTCVendor advisory
  31. 2026-08-11 00:31 UTCGHSA enrichment
  32. 2026-08-11 00:00 UTCEPSS rescore
  33. 2026-08-09 23:35 UTCEG score recompute
  34. 2026-08-09 23:35 UTCGHSA enrichment
  35. 2026-08-09 13:46 UTCEPSS rescore
  36. 2026-08-08 22:40 UTCEG score recompute
  37. 2026-08-08 22:40 UTCVendor advisory
  38. 2026-08-08 22:40 UTCGHSA enrichment
  39. 2026-08-08 16:37 UTCEPSS rescore
  40. 2026-08-07 21:44 UTCEG score recompute
  41. 2026-08-07 21:44 UTCVendor advisory
  42. 2026-08-07 21:44 UTCGHSA enrichment
  43. 2026-08-06 20:48 UTCEG score recompute
  44. 2026-08-06 20:48 UTCVendor advisory
  45. 2026-08-06 20:48 UTCGHSA enrichment
  46. 2026-08-06 13:46 UTCEPSS rescore
  47. 2026-08-05 19:53 UTCEG score recompute
  48. 2026-08-05 19:53 UTCVendor advisory
  49. 2026-08-05 19:53 UTCGHSA enrichment
  50. 2026-08-05 19:17 UTCEPSS rescore
  51. 2026-08-04 18:58 UTCEG score recompute
  52. 2026-08-04 18:58 UTCVendor advisory
  53. 2026-08-04 18:58 UTCGHSA enrichment
  54. 2026-08-04 15:10 UTCEPSS rescore
  55. 2026-08-04 10:38 UTCEPSS rescore
  56. 2026-08-03 18:02 UTCEG score recompute
  57. 2026-08-03 18:02 UTCGHSA enrichment
  58. 2026-08-03 10:35 UTCEPSS rescore
  59. 2026-08-02 18:23 UTCEG score recompute
  60. 2026-08-02 18:23 UTCVendor advisory
  61. 2026-08-02 18:23 UTCGHSA enrichment
  62. 2026-08-02 02:26 UTCEPSS rescore
  63. 2026-08-01 17:28 UTCEG score recompute
  64. 2026-08-01 17:28 UTCVendor advisory
  65. 2026-08-01 17:28 UTCGHSA enrichment
  66. 2026-08-01 04:15 UTCEPSS rescore
  67. 2026-07-31 16:32 UTCEG score recompute
  68. 2026-07-31 16:32 UTCGHSA enrichment
  69. 2026-07-30 15:35 UTCEG score recompute
  70. 2026-07-30 15:35 UTCGHSA enrichment
  71. 2026-07-30 15:11 UTCGHSA enrichment
  72. 2026-07-30 14:36 UTCGHSA enrichment
  73. 2026-07-30 14:06 UTCEG score recompute▲ 4.30
  74. 2026-07-30 14:06 UTCGHSA enrichment
  75. 2026-07-30 14:06 UTCMITRE cvelistV5CVSS v3 → 4.3 · severity → MEDIUM

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-17858?
CVE-2026-17858 is a medium vulnerability published on July 30, 2026. Uninitialized Use in WebNN in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
When was CVE-2026-17858 disclosed?
CVE-2026-17858 was first published in the National Vulnerability Database on July 30, 2026, with the most recent update on August 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-17858 actively exploited?
CVE-2026-17858 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 86.0% of all scored CVEs.
What is the CVSS score of CVE-2026-17858?
CVE-2026-17858 has a CVSS v3.1 base score of 4.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-17858?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-17858, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-17858

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