CVE-2026-13871

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-07-01. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

Insufficient policy enforcement in GuestView in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)

CVSS v3
6.5
EG Score
6.5(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
Severity65% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

June 30, 2026

Last Modified

July 2, 2026

Advisory Details (2)

Auto-updated Jul 3, 2026
No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/497961376
generic

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html

Vendor Advisories for CVE-2026-13871(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 14× in last 7d / 66× 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. 2026-07-27 11:47 UTCEG score recompute
  2. 2026-07-27 11:47 UTCGHSA enrichment
  3. 2026-07-26 14:54 UTCEPSS rescore
  4. 2026-07-26 14:54 UTCEPSS rescore
  5. 2026-07-26 13:42 UTCEG score recompute
  6. 2026-07-26 13:42 UTCVendor advisory
  7. 2026-07-26 13:42 UTCGHSA enrichment
  8. 2026-07-25 14:17 UTCEPSS rescore
  9. 2026-07-24 14:17 UTCEPSS rescore
  10. 2026-07-23 14:18 UTCEPSS rescore
  11. 2026-07-23 03:05 UTCEG score recompute
  12. 2026-07-22 14:08 UTCEPSS rescore
  13. 2026-07-21 15:24 UTCEPSS rescore
  14. 2026-07-20 17:08 UTCEPSS rescore
  15. 2026-07-19 14:30 UTCEPSS rescore
  16. 2026-07-19 02:28 UTCEPSS rescore
  17. 2026-07-18 10:04 UTCEPSS rescore
  18. 2026-07-16 17:02 UTCEPSS rescore
  19. 2026-07-16 16:04 UTCGHSA enrichment
  20. 2026-07-15 17:59 UTCVendor advisory
  21. 2026-07-15 17:59 UTCGHSA enrichment
  22. 2026-07-15 16:57 UTCEPSS rescore
  23. 2026-07-15 02:00 UTCEPSS rescore
  24. 2026-07-14 19:54 UTCVendor advisory
  25. 2026-07-14 19:54 UTCGHSA enrichment
Show 41 more
  1. 2026-07-13 22:30 UTCEPSS rescore
  2. 2026-07-13 21:49 UTCGHSA enrichment
  3. 2026-07-13 06:12 UTCEPSS rescore
  4. 2026-07-12 23:44 UTCVendor advisory
  5. 2026-07-12 23:44 UTCGHSA enrichment
  6. 2026-07-12 05:46 UTCEPSS rescore
  7. 2026-07-12 01:39 UTCVendor advisory
  8. 2026-07-12 01:39 UTCGHSA enrichment
  9. 2026-07-11 08:27 UTCEPSS rescore
  10. 2026-07-11 03:34 UTCVendor advisory
  11. 2026-07-11 03:34 UTCGHSA enrichment
  12. 2026-07-10 05:29 UTCVendor advisory
  13. 2026-07-10 05:29 UTCGHSA enrichment
  14. 2026-07-09 19:10 UTCEPSS rescore
  15. 2026-07-09 07:22 UTCVendor advisory
  16. 2026-07-09 07:22 UTCGHSA enrichment
  17. 2026-07-08 15:15 UTCEPSS rescore
  18. 2026-07-08 15:15 UTCEPSS rescore
  19. 2026-07-08 09:16 UTCVendor advisory
  20. 2026-07-08 09:15 UTCGHSA enrichment
  21. 2026-07-07 13:46 UTCEPSS rescore
  22. 2026-07-07 11:10 UTCVendor advisory
  23. 2026-07-07 11:10 UTCGHSA enrichment
  24. 2026-07-06 16:27 UTCEPSS rescore
  25. 2026-07-06 13:04 UTCVendor advisory
  26. 2026-07-06 13:03 UTCGHSA enrichment
  27. 2026-07-06 02:23 UTCEPSS rescore
  28. 2026-07-05 14:53 UTCVendor advisory
  29. 2026-07-05 14:53 UTCGHSA enrichment
  30. 2026-07-05 02:30 UTCEPSS rescore
  31. 2026-07-05 02:30 UTCEPSS rescore
  32. 2026-07-04 16:43 UTCVendor advisory
  33. 2026-07-04 16:42 UTCGHSA enrichment
  34. 2026-07-04 06:31 UTCEPSS rescore
  35. 2026-07-03 18:35 UTCEG score recompute▲ 6.50
  36. 2026-07-03 18:35 UTCGHSA enrichment
  37. 2026-07-01 17:06 UTCNVD updateCVSS v3 → 6.5 · severity → MEDIUM
  38. 2026-07-01 15:06 UTCEPSS rescore
  39. 2026-07-01 15:06 UTCEPSS rescore
  40. 2026-06-30 23:33 UTCEG score recompute
  41. 2026-06-30 23:23 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-13871?
CVE-2026-13871 is a medium vulnerability published on June 30, 2026. Insufficient policy enforcement in GuestView in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)
When was CVE-2026-13871 disclosed?
CVE-2026-13871 was first published in the National Vulnerability Database on June 30, 2026, with the most recent update on July 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13871 actively exploited?
CVE-2026-13871 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 79.8% of all scored CVEs.
What is the CVSS score of CVE-2026-13871?
CVE-2026-13871 has a CVSS v3.1 base score of 6.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-13871?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13871, 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

Explore the affected products and dependency analysis for CVE-2026-13871

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