CVE-2026-93379

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-09-17. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 4.3Exploit: None knownExposed services: Not assessed

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

Incorrect authorization in ORB in Google Chrome prior to 153.0.8010.52 allowed a remote attacker to bypass site isolation via a crafted HTML page. (Chromium security severity: Low)

CVSS v3
4.3
Vendor severity
LOWper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: Low)
EG Score
4.3MEDIUMhigh confidence
EG Risk
19
EG Risk 19/100CISA 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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
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
15th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

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 partial (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

September 17, 2026

Last Modified

September 30, 2026

Advisory Details (2)

Auto-updated Sep 18, 2026
No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/560039872
generic

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0194356994.html

Vendor Advisories for CVE-2026-93379(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 ... 153.0.8010.47-2~deb13u1 (422 versions)
  • every version up to 153.0.8010.52-1~deb12u1: fixed in 153.0.8010.52-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
chromium138.0.7204.183-1 ... 153.0.8010.52-1~deb12u1 (188 versions)
  • every version up to 153.0.8010.52-1~deb13u1: fixed in 153.0.8010.52-1~deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
chromium138.0.7204.183-1 ... 153.0.8010.52-1~deb13u1 (189 versions)
  • every version up to 153.0.8010.52-1: fixed in 153.0.8010.52-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 28× in last 7d / 65× 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. 2026-10-05 08:58 UTCEG score recompute
  2. 2026-10-05 08:58 UTCVendor advisory
  3. 2026-10-05 08:58 UTCGHSA enrichment
  4. 2026-10-04 23:23 UTCEPSS rescore
  5. 2026-10-04 11:01 UTCEG score recompute
  6. 2026-10-04 11:01 UTCVendor advisory
  7. 2026-10-04 11:01 UTCGHSA enrichment
  8. 2026-10-03 14:26 UTCEPSS rescore
  9. 2026-10-03 13:04 UTCEG score recompute
  10. 2026-10-03 13:04 UTCVendor advisory
  11. 2026-10-03 13:04 UTCGHSA enrichment
  12. 2026-10-02 15:02 UTCEG score recompute
  13. 2026-10-02 15:02 UTCVendor advisory
  14. 2026-10-02 15:01 UTCGHSA enrichment
  15. 2026-10-01 19:51 UTCEPSS rescore
  16. 2026-10-01 17:05 UTCVendor advisory
  17. 2026-10-01 17:04 UTCGHSA enrichment
  18. 2026-09-30 18:42 UTCGHSA enrichment
  19. 2026-09-30 17:38 UTCEG score recompute
  20. 2026-09-30 17:38 UTCGHSA enrichment
  21. 2026-09-30 15:04 UTCEPSS rescore
  22. 2026-09-30 14:59 UTCGHSA enrichment
  23. 2026-09-29 17:02 UTCEG score recompute
  24. 2026-09-29 17:02 UTCGHSA enrichment
  25. 2026-09-28 19:04 UTCEG score recompute
Show 40 more
  1. 2026-09-28 19:04 UTCGHSA enrichment
  2. 2026-09-28 13:52 UTCEPSS rescore
  3. 2026-09-28 13:52 UTCEPSS rescore
  4. 2026-09-27 21:07 UTCEG score recompute
  5. 2026-09-27 21:07 UTCGHSA enrichment
  6. 2026-09-27 13:49 UTCEPSS rescore
  7. 2026-09-26 23:10 UTCEG score recompute
  8. 2026-09-26 23:09 UTCGHSA enrichment
  9. 2026-09-26 15:59 UTCEPSS rescore
  10. 2026-09-26 01:08 UTCEG score recompute
  11. 2026-09-26 01:08 UTCGHSA enrichment
  12. 2026-09-25 03:07 UTCEG score recompute
  13. 2026-09-25 03:07 UTCGHSA enrichment
  14. 2026-09-24 14:04 UTCEPSS rescore
  15. 2026-09-24 05:08 UTCEG score recompute
  16. 2026-09-24 05:07 UTCGHSA enrichment
  17. 2026-09-23 17:54 UTCEPSS rescore
  18. 2026-09-23 07:10 UTCEG score recompute
  19. 2026-09-23 07:10 UTCGHSA enrichment
  20. 2026-09-22 16:01 UTCEPSS rescore
  21. 2026-09-22 09:13 UTCEG score recompute
  22. 2026-09-22 09:13 UTCGHSA enrichment
  23. 2026-09-21 21:09 UTCEPSS rescore
  24. 2026-09-21 11:16 UTCGHSA enrichment
  25. 2026-09-21 08:12 UTCEG score recompute
  26. 2026-09-21 08:12 UTCGHSA enrichment
  27. 2026-09-20 20:16 UTCEPSS rescore
  28. 2026-09-20 10:15 UTCEG score recompute
  29. 2026-09-20 10:15 UTCGHSA enrichment
  30. 2026-09-19 12:18 UTCEG score recompute
  31. 2026-09-19 12:18 UTCGHSA enrichment
  32. 2026-09-18 19:28 UTCEPSS rescore
  33. 2026-09-18 14:21 UTCGHSA enrichment
  34. 2026-09-18 13:34 UTCEG score recompute▼ 4.50
  35. 2026-09-18 13:34 UTCGHSA enrichment
  36. 2026-09-18 13:34 UTCMITRE cvelistV5CVSS v3 → 4.3 · severity → MEDIUM
  37. 2026-09-18 08:13 UTCGHSA enrichment
  38. 2026-09-17 21:19 UTCNVD update
  39. 2026-09-17 21:14 UTCEG score recompute
  40. 2026-09-17 21:14 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-93379?
CVE-2026-93379 is a medium vulnerability published on September 17, 2026. Incorrect authorization in ORB in Google Chrome prior to 153.0.8010.52 allowed a remote attacker to bypass site isolation via a crafted HTML page. (Chromium security severity: Low)
When was CVE-2026-93379 disclosed?
CVE-2026-93379 was first published on September 17, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-93379 actively exploited?
CVE-2026-93379 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (15th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-93379?
CVE-2026-93379 has a CVSS v3.1 base score of 4.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-93379?
No fix for CVE-2026-93379 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-2026-93379 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-93379

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