CVE-2026-2345

LOWNVD 3.63.6—
EchelonGraph scoreMEDIUM confidence

Score 3.6 from GitHub Security Advisory (severity: LOW) published 2026-02-11. NVD baseline CVSS 3.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
3.6
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 3.6Exploit: NoneExposed: 0

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

Proctorio Chrome Extension is a browser extension used for online proctoring. The extension contains multiple window.addEventListener('message', ...) handlers that do not properly validate the origin of incoming messages. Specifically, an internal messaging bridge processes messages based solely on the presence of a fromWebsite property without verifying the event.origin attribute.

CVSS v3
3.6
EG Score
3.6(medium)
EG Risk
16(Track)
EG Risk 16/100SSVC: 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
Severity36% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
0.0%
KEV
Not listed

Published

February 11, 2026

Last Modified

April 15, 2026

References (1)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 14× 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. 2026-07-23 03:07 UTCEG score recompute
  2. 2026-07-21 15:24 UTCEPSS rescore
  3. 2026-07-21 15:24 UTCEPSS rescore
  4. 2026-07-18 10:04 UTCEPSS rescore
  5. 2026-07-18 10:04 UTCEPSS rescore
  6. 2026-07-16 17:03 UTCEPSS rescore
  7. 2026-07-16 17:03 UTCEPSS rescore
  8. 2026-07-15 02:00 UTCEPSS rescore
  9. 2026-07-15 02:00 UTCEPSS rescore
  10. 2026-07-11 08:27 UTCEPSS rescore
  11. 2026-07-08 15:15 UTCEPSS rescore
  12. 2026-07-06 16:27 UTCEPSS rescore
  13. 2026-07-06 16:27 UTCEPSS rescore
  14. 2026-07-01 15:06 UTCEPSS rescore
  15. 2026-06-15 17:48 UTCEPSS rescore
  16. 2026-06-14 23:18 UTCEPSS rescore
  17. 2026-06-13 23:00 UTCEPSS rescore
  18. 2026-06-12 23:12 UTCEPSS rescore
  19. 2026-06-12 23:12 UTCEPSS rescore
  20. 2026-06-11 14:00 UTCEPSS rescore
  21. 2026-06-10 22:32 UTCGHSA enrichment
  22. 2026-06-10 22:18 UTCEPSS rescore
  23. 2026-06-10 22:18 UTCEPSS rescore
  24. 2026-06-08 14:17 UTCEPSS rescore
  25. 2026-06-08 14:17 UTCEPSS rescore
Show 45 more
  1. 2026-06-07 19:31 UTCGHSA enrichment
  2. 2026-06-07 15:25 UTCEPSS rescore
  3. 2026-06-07 15:25 UTCEPSS rescore
  4. 2026-06-07 15:25 UTCEPSS rescore
  5. 2026-06-06 13:47 UTCEPSS rescore
  6. 2026-06-06 13:47 UTCEPSS rescore
  7. 2026-06-05 22:47 UTCEPSS rescore
  8. 2026-06-05 22:47 UTCEPSS rescore
  9. 2026-06-05 06:10 UTCEPSS rescore
  10. 2026-06-05 06:10 UTCEPSS rescore
  11. 2026-06-04 13:12 UTCEPSS rescore
  12. 2026-06-04 13:12 UTCEPSS rescore
  13. 2026-06-02 20:13 UTCEPSS rescore
  14. 2026-06-02 20:13 UTCEPSS rescore
  15. 2026-06-01 13:51 UTCEPSS rescore
  16. 2026-06-01 13:51 UTCEPSS rescore
  17. 2026-05-31 22:30 UTCEPSS rescore
  18. 2026-05-31 22:30 UTCEPSS rescore
  19. 2026-05-31 00:16 UTCEPSS rescore
  20. 2026-05-31 00:16 UTCEPSS rescore
  21. 2026-05-29 13:44 UTCEPSS rescore
  22. 2026-05-29 13:44 UTCEPSS rescore
  23. 2026-05-28 13:44 UTCEPSS rescore
  24. 2026-05-28 13:44 UTCEPSS rescore
  25. 2026-05-28 13:44 UTCEPSS rescore
  26. 2026-05-27 13:40 UTCEPSS rescore
  27. 2026-05-27 13:40 UTCEPSS rescore
  28. 2026-05-27 13:40 UTCEPSS rescore
  29. 2026-05-26 13:44 UTCEPSS rescore
  30. 2026-05-26 13:44 UTCEPSS rescore
  31. 2026-05-26 07:18 UTCEPSS rescore
  32. 2026-05-26 07:18 UTCEPSS rescore
  33. 2026-05-26 07:18 UTCEPSS rescore
  34. 2026-05-24 16:59 UTCEPSS rescore
  35. 2026-05-23 15:21 UTCEPSS rescore
  36. 2026-05-22 21:16 UTCEPSS rescore
  37. 2026-05-20 23:08 UTCEG score recompute
  38. 2026-05-20 23:08 UTCGHSA enrichment
  39. 2026-05-20 22:38 UTCEPSS rescore
  40. 2026-05-20 22:38 UTCEPSS rescore
  41. 2026-05-20 22:37 UTCEPSS rescore
  42. 2026-05-20 11:22 UTCEPSS rescore
  43. 2026-05-20 11:22 UTCEPSS rescore
  44. 2026-05-20 11:21 UTCEPSS rescore
  45. 2026-05-18 21:31 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-2345?
CVE-2026-2345 is a low vulnerability published on February 11, 2026. Proctorio Chrome Extension is a browser extension used for online proctoring. The extension contains multiple window.addEventListener('message', ...) handlers that do not properly validate the origin of incoming messages. Specifically, an internal messaging bridge processes messages based solely on…
When was CVE-2026-2345 disclosed?
CVE-2026-2345 was first published in the National Vulnerability Database on February 11, 2026, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-2345 actively exploited?
CVE-2026-2345 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-2345?
CVE-2026-2345 has a CVSS v3 base score of 3.6 (NVD).
How do I remediate CVE-2026-2345?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-2345, 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-2026-2345

Explore →

Is Your Infrastructure Affected by CVE-2026-2345?

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

Start Free Scan →Browse All CVEs