CVE-2026-40465

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-08-31. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

NSP is vulnerable to an open redirect due to insufficient server-side validation of the URL (or redirect) parameter.

CVSS v3
5.3
EG Score
5.3(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
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

August 31, 2026

Last Modified

September 3, 2026

References (1)

Vendor Advisories for CVE-2026-40465(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 19× 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. 2026-09-20 20:15 UTCEPSS rescore
  2. 2026-09-20 18:07 UTCGHSA enrichment
  3. 2026-09-19 18:53 UTCEG score recompute
  4. 2026-09-19 18:53 UTCGHSA enrichment
  5. 2026-09-18 19:50 UTCEG score recompute
  6. 2026-09-18 19:50 UTCGHSA enrichment
  7. 2026-09-18 19:28 UTCEPSS rescore
  8. 2026-09-18 19:28 UTCEPSS rescore
  9. 2026-09-17 20:48 UTCEG score recompute
  10. 2026-09-17 20:48 UTCGHSA enrichment
  11. 2026-09-17 19:30 UTCEPSS rescore
  12. 2026-09-16 18:45 UTCEG score recompute
  13. 2026-09-16 18:45 UTCGHSA enrichment
  14. 2026-09-16 14:08 UTCEPSS rescore
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-15 18:27 UTCEG score recompute
  17. 2026-09-15 18:27 UTCGHSA enrichment
  18. 2026-09-15 03:11 UTCEPSS rescore
  19. 2026-09-14 18:57 UTCGHSA enrichment
  20. 2026-09-13 19:55 UTCEG score recompute
  21. 2026-09-13 19:55 UTCGHSA enrichment
  22. 2026-09-13 16:47 UTCEPSS rescore
  23. 2026-09-12 20:53 UTCEG score recompute
  24. 2026-09-12 20:53 UTCGHSA enrichment
  25. 2026-09-12 15:01 UTCEPSS rescore
Show 35 more
  1. 2026-09-11 21:50 UTCEG score recompute
  2. 2026-09-11 21:50 UTCGHSA enrichment
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-11 09:37 UTCEPSS rescore
  5. 2026-09-10 22:48 UTCEG score recompute
  6. 2026-09-10 22:48 UTCGHSA enrichment
  7. 2026-09-10 09:34 UTCEPSS rescore
  8. 2026-09-09 23:45 UTCGHSA enrichment
  9. 2026-09-08 23:32 UTCEG score recompute
  10. 2026-09-08 23:31 UTCGHSA enrichment
  11. 2026-09-08 22:00 UTCEPSS rescore
  12. 2026-09-07 16:01 UTCEPSS rescore
  13. 2026-09-07 14:58 UTCGHSA enrichment
  14. 2026-09-06 15:29 UTCEG score recompute
  15. 2026-09-06 15:29 UTCGHSA enrichment
  16. 2026-09-06 13:47 UTCEPSS rescore
  17. 2026-09-05 16:26 UTCEG score recompute
  18. 2026-09-05 16:26 UTCGHSA enrichment
  19. 2026-09-04 17:23 UTCEG score recompute
  20. 2026-09-04 17:23 UTCGHSA enrichment
  21. 2026-09-04 05:06 UTCEPSS rescore
  22. 2026-09-03 18:20 UTCGHSA enrichment
  23. 2026-09-03 13:36 UTCGHSA enrichment
  24. 2026-09-02 14:34 UTCGHSA enrichment
  25. 2026-09-01 15:30 UTCEG score recompute
  26. 2026-09-01 15:30 UTCGHSA enrichment
  27. 2026-09-01 13:53 UTCEPSS rescore
  28. 2026-09-01 04:39 UTCEPSS rescore
  29. 2026-08-31 16:23 UTCGHSA enrichment
  30. 2026-08-31 15:45 UTCEG score recompute▲ 5.30
  31. 2026-08-31 15:45 UTCGHSA enrichment
  32. 2026-08-31 15:44 UTCMITRE cvelistV5CVSS v3 → 5.3 · severity → MEDIUM
  33. 2026-08-31 07:27 UTCNVD update
  34. 2026-08-31 06:43 UTCEG score recompute
  35. 2026-08-31 06:43 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-40465?
CVE-2026-40465 is a medium vulnerability published on August 31, 2026. NSP is vulnerable to an open redirect due to insufficient server-side validation of the URL (or redirect) parameter.
When was CVE-2026-40465 disclosed?
CVE-2026-40465 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-2026-40465 actively exploited?
CVE-2026-40465 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 92.8% of all scored CVEs.
What is the CVSS score of CVE-2026-40465?
CVE-2026-40465 has a CVSS v3.1 base score of 5.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-40465?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40465, 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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