CVE-2026-81267

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH confidence

Score 5.4 from GitHub Security Advisory published 2026-08-31. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

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

A malicious webpage could stall a popup's cross-origin navigation after commit, causing the address bar to display the destination origin while continuing to render attacker-controlled content. This vulnerability was fixed in Firefox for iOS 155.0.

CVSS v3
5.4
EG Score
5.4(high)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

August 31, 2026

Last Modified

September 3, 2026

Advisory Details (2)

Auto-updated Aug 31, 2026
No patch confirmed yet.
generic

Security Vulnerabilities fixed in Firefox for iOS 155.0 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-81/
generic

Access Denied

https://bugzilla.mozilla.org/show_bug.cgi?id=2052758

Vendor Advisories for CVE-2026-81267(1)

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 18× in last 7d / 52× 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. 2026-09-18 23:53 UTCEG score recompute
  2. 2026-09-18 23:53 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-17 23:58 UTCEG score recompute
  5. 2026-09-17 23:58 UTCGHSA enrichment
  6. 2026-09-16 23:25 UTCEG score recompute
  7. 2026-09-16 23:25 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-15 23:30 UTCEG score recompute
  11. 2026-09-15 23:30 UTCGHSA enrichment
  12. 2026-09-15 03:12 UTCEPSS rescore
  13. 2026-09-15 03:12 UTCEPSS rescore
  14. 2026-09-14 23:35 UTCGHSA enrichment
  15. 2026-09-13 23:40 UTCEG score recompute
  16. 2026-09-13 23:40 UTCGHSA enrichment
  17. 2026-09-12 23:45 UTCEG score recompute
  18. 2026-09-12 23:45 UTCGHSA enrichment
  19. 2026-09-11 23:50 UTCEG score recompute
  20. 2026-09-11 23:50 UTCGHSA enrichment
  21. 2026-09-11 14:53 UTCEPSS rescore
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-10 23:55 UTCEG score recompute
  24. 2026-09-10 23:55 UTCGHSA enrichment
  25. 2026-09-09 23:43 UTCGHSA enrichment
Show 27 more
  1. 2026-09-08 23:29 UTCEG score recompute
  2. 2026-09-08 23:29 UTCGHSA enrichment
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-07 17:02 UTCEG score recompute
  5. 2026-09-07 17:02 UTCGHSA enrichment
  6. 2026-09-06 17:07 UTCEG score recompute
  7. 2026-09-06 17:07 UTCGHSA enrichment
  8. 2026-09-06 13:48 UTCEPSS rescore
  9. 2026-09-05 17:10 UTCEG score recompute
  10. 2026-09-05 17:10 UTCGHSA enrichment
  11. 2026-09-05 15:31 UTCEPSS rescore
  12. 2026-09-04 17:09 UTCEG score recompute
  13. 2026-09-04 17:09 UTCGHSA enrichment
  14. 2026-09-04 05:07 UTCEPSS rescore
  15. 2026-09-03 17:15 UTCGHSA enrichment
  16. 2026-09-02 21:06 UTCEG score recompute
  17. 2026-09-02 21:06 UTCGHSA enrichment
  18. 2026-09-02 14:12 UTCEPSS rescore
  19. 2026-09-01 21:10 UTCEG score recompute
  20. 2026-09-01 21:10 UTCGHSA enrichment
  21. 2026-09-01 13:54 UTCEPSS rescore
  22. 2026-08-31 21:21 UTCEG score recompute▲ 5.40
  23. 2026-08-31 21:21 UTCNVD updateCVSS v3 → 5.4 · severity → MEDIUM
  24. 2026-08-31 20:21 UTCNVD update
  25. 2026-08-31 20:21 UTCMITRE cvelistV5CVSS v3 → 5.4 · severity → MEDIUM
  26. 2026-08-31 19:45 UTCEG score recompute
  27. 2026-08-31 19:44 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-81267?
CVE-2026-81267 is a medium vulnerability published on August 31, 2026. A malicious webpage could stall a popup's cross-origin navigation after commit, causing the address bar to display the destination origin while continuing to render attacker-controlled content. This vulnerability was fixed in Firefox for iOS 155.0.
When was CVE-2026-81267 disclosed?
CVE-2026-81267 was first published in the National Vulnerability Database on August 31, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-81267 actively exploited?
CVE-2026-81267 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 89.3% of all scored CVEs.
What is the CVSS score of CVE-2026-81267?
CVE-2026-81267 has a CVSS v3.1 base score of 5.4 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-81267?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-81267, 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-2026-81267

Explore →

Is Your Infrastructure Affected by CVE-2026-81267?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs