CVE-2026-19557

HIGHPre-NVD 8.38.3—
EchelonGraph scoreHIGH confidence

Score 8.3 from GitHub Security Advisory (severity: HIGH) published 2026-08-12. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
8.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.3Exploit: 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 TabStrip in Google Chrome on Mac prior to 151.0.7922.137 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

CVSS v3
8.3
Vendor severity
HIGHper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: High)
EG Score
8.3(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity83% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
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/534867485
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-2026-19557(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 / 60× 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. 2026-08-21 01:04 UTCEG score recompute
  2. 2026-08-21 01:04 UTCVendor advisory
  3. 2026-08-21 01:04 UTCGHSA enrichment
  4. 2026-08-20 22:55 UTCEPSS rescore
  5. 2026-08-20 13:09 UTCVendor advisory
  6. 2026-08-20 13:09 UTCGHSA enrichment
  7. 2026-08-20 01:13 UTCEG score recompute
  8. 2026-08-20 01:12 UTCGHSA enrichment
  9. 2026-08-19 17:03 UTCEPSS rescore
  10. 2026-08-19 13:16 UTCVendor advisory
  11. 2026-08-19 13:16 UTCGHSA enrichment
  12. 2026-08-19 01:20 UTCEG score recompute
  13. 2026-08-19 01:20 UTCVendor advisory
  14. 2026-08-19 01:20 UTCGHSA enrichment
  15. 2026-08-18 13:48 UTCEPSS rescore
  16. 2026-08-18 13:25 UTCVendor advisory
  17. 2026-08-18 13:25 UTCGHSA enrichment
  18. 2026-08-18 01:24 UTCEG score recompute
  19. 2026-08-18 01:24 UTCVendor advisory
  20. 2026-08-18 01:24 UTCGHSA enrichment
  21. 2026-08-17 13:47 UTCEPSS rescore
  22. 2026-08-17 13:28 UTCVendor advisory
  23. 2026-08-17 13:28 UTCGHSA enrichment
  24. 2026-08-17 07:03 UTCVendor advisory
  25. 2026-08-17 07:03 UTCGHSA enrichment
Show 35 more
  1. 2026-08-17 07:01 UTCGHSA enrichment
  2. 2026-08-16 19:06 UTCEG score recompute
  3. 2026-08-16 19:06 UTCVendor advisory
  4. 2026-08-16 19:06 UTCGHSA enrichment
  5. 2026-08-16 14:56 UTCEPSS rescore
  6. 2026-08-16 07:06 UTCEG score recompute
  7. 2026-08-16 07:06 UTCVendor advisory
  8. 2026-08-16 07:06 UTCGHSA enrichment
  9. 2026-08-16 02:14 UTCEPSS rescore
  10. 2026-08-15 19:11 UTCVendor advisory
  11. 2026-08-15 19:11 UTCGHSA enrichment
  12. 2026-08-15 07:15 UTCEG score recompute
  13. 2026-08-15 07:15 UTCVendor advisory
  14. 2026-08-15 07:15 UTCGHSA enrichment
  15. 2026-08-15 01:30 UTCEPSS rescore
  16. 2026-08-14 19:19 UTCVendor advisory
  17. 2026-08-14 19:19 UTCGHSA enrichment
  18. 2026-08-14 17:21 UTCGHSA enrichment
  19. 2026-08-14 05:11 UTCEG score recompute
  20. 2026-08-14 05:11 UTCGHSA enrichment
  21. 2026-08-13 22:00 UTCEPSS rescore
  22. 2026-08-13 17:15 UTCGHSA enrichment
  23. 2026-08-13 05:19 UTCGHSA enrichment
  24. 2026-08-13 04:21 UTCGHSA enrichment
  25. 2026-08-13 02:19 UTCEG score recompute
  26. 2026-08-13 02:19 UTCGHSA enrichment
  27. 2026-08-12 14:23 UTCGHSA enrichment
  28. 2026-08-12 13:59 UTCEG score recompute▼ 0.50
  29. 2026-08-12 13:59 UTCGHSA enrichment
  30. 2026-08-12 13:58 UTCMITRE cvelistV5CVSS v3 → 8.3 · severity → HIGH
  31. 2026-08-12 13:50 UTCEPSS rescore
  32. 2026-08-12 10:15 UTCGHSA enrichment
  33. 2026-08-11 22:18 UTCNVD update
  34. 2026-08-11 21:25 UTCEG score recompute
  35. 2026-08-11 21:25 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-19557?
CVE-2026-19557 is a high vulnerability published on August 11, 2026. Use after free in TabStrip in Google Chrome on Mac prior to 151.0.7922.137 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
When was CVE-2026-19557 disclosed?
CVE-2026-19557 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-2026-19557 actively exploited?
CVE-2026-19557 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 76.9% of all scored CVEs.
What is the CVSS score of CVE-2026-19557?
CVE-2026-19557 has a CVSS v3.1 base score of 8.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-19557?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19557, 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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