CVE-2026-19558

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH 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 a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

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
7.5(high)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
16%
KEV
Not listed

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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 43× in last 7d / 58× 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.

  1. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 18:58 UTCVendor advisory
  3. 2026-08-20 18:58 UTCGHSA enrichment
  4. 2026-08-20 07:51 UTCVendor advisory
  5. 2026-08-20 07:51 UTCGHSA enrichment
  6. 2026-08-19 20:45 UTCEG score recompute
  7. 2026-08-19 20:45 UTCVendor advisory
  8. 2026-08-19 20:45 UTCGHSA enrichment
  9. 2026-08-19 17:03 UTCEPSS rescore
  10. 2026-08-19 09:38 UTCVendor advisory
  11. 2026-08-19 09:38 UTCGHSA enrichment
  12. 2026-08-18 22:29 UTCEG score recompute
  13. 2026-08-18 22:29 UTCGHSA enrichment
  14. 2026-08-18 13:48 UTCEPSS rescore
  15. 2026-08-18 11:23 UTCVendor advisory
  16. 2026-08-18 11:23 UTCGHSA enrichment
  17. 2026-08-18 00:15 UTCEG score recompute
  18. 2026-08-18 00:15 UTCVendor advisory
  19. 2026-08-18 00:14 UTCGHSA enrichment
  20. 2026-08-17 13:47 UTCEPSS rescore
  21. 2026-08-17 13:05 UTCVendor advisory
  22. 2026-08-17 13:05 UTCGHSA enrichment
  23. 2026-08-17 03:17 UTCVendor advisory
  24. 2026-08-17 03:17 UTCGHSA enrichment
  25. 2026-08-16 16:10 UTCEG score recompute
Show 33 more
  1. 2026-08-16 16:10 UTCVendor advisory
  2. 2026-08-16 16:10 UTCGHSA enrichment
  3. 2026-08-16 14:56 UTCEPSS rescore
  4. 2026-08-16 05:03 UTCEG score recompute
  5. 2026-08-16 05:03 UTCVendor advisory
  6. 2026-08-16 05:03 UTCGHSA enrichment
  7. 2026-08-16 02:14 UTCEPSS rescore
  8. 2026-08-15 17:57 UTCVendor advisory
  9. 2026-08-15 17:57 UTCGHSA enrichment
  10. 2026-08-15 06:50 UTCEG score recompute
  11. 2026-08-15 06:50 UTCVendor advisory
  12. 2026-08-15 06:50 UTCGHSA enrichment
  13. 2026-08-15 01:30 UTCEPSS rescore
  14. 2026-08-14 19:18 UTCVendor advisory
  15. 2026-08-14 19:18 UTCGHSA enrichment
  16. 2026-08-14 14:51 UTCGHSA enrichment
  17. 2026-08-14 03:45 UTCEG score recompute
  18. 2026-08-14 03:45 UTCGHSA enrichment
  19. 2026-08-13 22:00 UTCEPSS rescore
  20. 2026-08-13 16:38 UTCGHSA enrichment
  21. 2026-08-13 05:19 UTCGHSA enrichment
  22. 2026-08-13 04:21 UTCGHSA enrichment
  23. 2026-08-13 01:30 UTCEG score recompute
  24. 2026-08-13 01:30 UTCGHSA enrichment
  25. 2026-08-12 14:23 UTCGHSA enrichment
  26. 2026-08-12 13:59 UTCEG score recompute▼ 1.30
  27. 2026-08-12 13:59 UTCGHSA enrichment
  28. 2026-08-12 13:58 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  29. 2026-08-12 13:50 UTCEPSS rescore
  30. 2026-08-12 09:25 UTCGHSA enrichment
  31. 2026-08-11 22:18 UTCNVD update
  32. 2026-08-11 21:25 UTCEG score recompute
  33. 2026-08-11 21:25 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + 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 in the National Vulnerability Database 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% probability of exploitation in the next 30 days, which ranks it in the top 83.8% of all 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?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19558, 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

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