CVE-2026-17861

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-30. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

Insufficient validation of untrusted input in Updater in Google Chrome prior to 151.0.7922.72 allowed a local attacker to perform OS-level privilege escalation via a malicious file. (Chromium security severity: Medium)

CVSS v3
7.8
Vendor severity
MEDIUMper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: Medium)
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
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/520417861
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-2026-17861(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 32× in last 7d / 164× 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 176 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-17861?
CVE-2026-17861 is a high vulnerability published on July 30, 2026. Insufficient validation of untrusted input in Updater in Google Chrome prior to 151.0.7922.72 allowed a local attacker to perform OS-level privilege escalation via a malicious file. (Chromium security severity: Medium)
When was CVE-2026-17861 disclosed?
CVE-2026-17861 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-2026-17861 actively exploited?
CVE-2026-17861 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 98.8% of all scored CVEs.
What is the CVSS score of CVE-2026-17861?
CVE-2026-17861 has a CVSS v3.1 base score of 7.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-17861?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-17861, 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-2026-17861

Explore →

Is Your Infrastructure Affected by CVE-2026-17861?

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

Start Free Scan →Browse All CVEs