CVE-2026-17839

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-07-30. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

Inappropriate implementation in Chrome for iOS in Google Chrome on iOS prior to 151.0.7922.72 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Medium)

CVSS v3
6.5
Vendor severity
MEDIUMper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: Medium)
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

July 30, 2026

Last Modified

August 3, 2026

Advisory Details (2)

Auto-updated Jul 31, 2026
No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/518080978
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-2026-17839(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(1)

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 23× in last 7d / 109× 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 114 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-17839?
CVE-2026-17839 is a medium vulnerability published on July 30, 2026. Inappropriate implementation in Chrome for iOS in Google Chrome on iOS prior to 151.0.7922.72 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Medium)
When was CVE-2026-17839 disclosed?
CVE-2026-17839 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-2026-17839 actively exploited?
CVE-2026-17839 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 80.5% of all scored CVEs.
What is the CVSS score of CVE-2026-17839?
CVE-2026-17839 has a CVSS v3.1 base score of 6.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-17839?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-17839, 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-2026-17839

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