CVE-2026-19558

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-12. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.5Exploit: None knownExposed services: Not assessed

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

Use after free in Extensions in Google Chrome prior to 151.0.7922.137 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. (Chromium security severity: High)

CVSS v3
7.5
Vendor severity
HIGHper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: High)
EG Score
7.5HIGHmedium confidence
EG Risk
34
EG Risk 34/100CISA SSVC

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
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
16th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 11, 2026

Last Modified

August 17, 2026

Advisory Details (2)

Auto-updated Aug 12, 2026
No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/536676756
generic

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_01815628406.html

Vendor Advisories for CVE-2026-19558(2)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
chromium113.0.5672.126-1 ... 151.0.7922.71-1~deb13u1 (401 versions)
  • every version up to 151.0.7922.137-1~deb12u1: fixed in 151.0.7922.137-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
chromium138.0.7204.183-1 ... 151.0.7922.71-1~deb13u1 (167 versions)
  • every version up to 151.0.7922.137-1~deb13u1: fixed in 151.0.7922.137-1~deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
chromium138.0.7204.183-1 ... 151.0.7922.71-1~deb13u1 (168 versions)
  • every version up to 151.0.7922.137-1: fixed in 151.0.7922.137-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 28× in last 7d / 142× 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 284 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19558?
CVE-2026-19558 is a high vulnerability published on August 11, 2026. Use after free in Extensions in Google Chrome prior to 151.0.7922.137 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. (Chromium security severity: High)
When was CVE-2026-19558 disclosed?
CVE-2026-19558 was first published on August 11, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19558 actively exploited?
CVE-2026-19558 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (16th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-19558?
CVE-2026-19558 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-19558?
No fix for CVE-2026-19558 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-19558 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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