CVE-2026-40986

MEDIUMPre-NVD 4.84.8—
EchelonGraph scoreHIGH confidence

Score 4.8 from GitHub Security Advisory published 2026-06-11. a secondary CVSS source baseline 4.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.8
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.8Exploit: NoneExposed: 0

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

Spring Web Flow's JavaScript RemotingHandler renders the body of an error response as HTML even when the response is not "text/html", which can result in a scripting attack in the user's browser if the error response from the server contains error details with input reflected from an attacker.

Affected versions: Spring Web Flow 4.0.0; 3.0.0 through 3.0.1; 2.5.0 through 2.5.1.

CVSS v3
4.8
EG Score
4.8(high)
EPSS
10.2%
KEV
Not listed

Published

June 11, 2026

Last Modified

June 23, 2026

Advisory Details (1)

Auto-updated Jun 15, 2026
No patch confirmed yet.
generic

CVE-2026-40986: Spring Web Flow JS RemotingHandler renders non-HTML Response as HTML

https://spring.io/security/cve-2026-40986

Vendor Advisories for CVE-2026-40986(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 20× in last 7d / 80× 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. 2026-07-07 03:21 UTCEG score recompute
  2. 2026-07-07 03:21 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 13:09 UTCEG score recompute
  8. 2026-07-05 13:09 UTCGHSA enrichment
  9. 2026-07-05 02:30 UTCEPSS rescore
  10. 2026-07-04 11:33 UTCEG score recompute
  11. 2026-07-04 11:33 UTCGHSA enrichment
  12. 2026-07-04 06:31 UTCEPSS rescore
  13. 2026-07-03 07:47 UTCEG score recompute
  14. 2026-07-03 07:46 UTCGHSA enrichment
  15. 2026-07-02 03:45 UTCEG score recompute
  16. 2026-07-02 03:45 UTCGHSA enrichment
  17. 2026-07-01 15:06 UTCEPSS rescore
  18. 2026-07-01 02:57 UTCEG score recompute
  19. 2026-07-01 02:57 UTCGHSA enrichment
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 02:09 UTCEG score recompute
  22. 2026-06-30 02:09 UTCGHSA enrichment
  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-29 01:21 UTCEG score recompute
  25. 2026-06-29 01:21 UTCGHSA enrichment
Show 55 more
  1. 2026-06-28 14:07 UTCEPSS rescore
  2. 2026-06-28 04:56 UTCEPSS rescore
  3. 2026-06-28 00:33 UTCEG score recompute
  4. 2026-06-28 00:33 UTCGHSA enrichment
  5. 2026-06-27 03:08 UTCEPSS rescore
  6. 2026-06-26 23:43 UTCEG score recompute
  7. 2026-06-26 23:43 UTCGHSA enrichment
  8. 2026-06-25 22:55 UTCEG score recompute
  9. 2026-06-25 22:54 UTCGHSA enrichment
  10. 2026-06-25 13:49 UTCEPSS rescore
  11. 2026-06-25 13:49 UTCEPSS rescore
  12. 2026-06-24 22:05 UTCEG score recompute
  13. 2026-06-24 22:05 UTCGHSA enrichment
  14. 2026-06-24 14:05 UTCEPSS rescore
  15. 2026-06-23 21:33 UTCEPSS rescore
  16. 2026-06-23 21:15 UTCEG score recompute
  17. 2026-06-23 21:15 UTCGHSA enrichment
  18. 2026-06-22 20:14 UTCEG score recompute
  19. 2026-06-22 20:14 UTCGHSA enrichment
  20. 2026-06-22 14:25 UTCEPSS rescore
  21. 2026-06-22 14:25 UTCEPSS rescore
  22. 2026-06-21 19:06 UTCEG score recompute
  23. 2026-06-21 19:06 UTCGHSA enrichment
  24. 2026-06-21 14:56 UTCEPSS rescore
  25. 2026-06-21 14:56 UTCEPSS rescore
  26. 2026-06-21 01:59 UTCEPSS rescore
  27. 2026-06-20 16:55 UTCEG score recompute
  28. 2026-06-20 16:54 UTCGHSA enrichment
  29. 2026-06-19 19:25 UTCEPSS rescore
  30. 2026-06-19 15:42 UTCEG score recompute
  31. 2026-06-19 15:42 UTCGHSA enrichment
  32. 2026-06-18 17:52 UTCEPSS rescore
  33. 2026-06-18 17:52 UTCEPSS rescore
  34. 2026-06-18 14:50 UTCEG score recompute
  35. 2026-06-18 14:50 UTCGHSA enrichment
  36. 2026-06-17 17:53 UTCEPSS rescore
  37. 2026-06-17 14:02 UTCEG score recompute
  38. 2026-06-17 14:02 UTCGHSA enrichment
  39. 2026-06-16 17:52 UTCEPSS rescore
  40. 2026-06-16 13:14 UTCEG score recompute
  41. 2026-06-16 13:14 UTCGHSA enrichment
  42. 2026-06-15 17:49 UTCEPSS rescore
  43. 2026-06-15 12:25 UTCEG score recompute
  44. 2026-06-15 12:25 UTCGHSA enrichment
  45. 2026-06-14 11:36 UTCEG score recompute
  46. 2026-06-14 11:36 UTCGHSA enrichment
  47. 2026-06-13 10:48 UTCEG score recompute
  48. 2026-06-13 10:48 UTCGHSA enrichment
  49. 2026-06-12 23:12 UTCEPSS rescore
  50. 2026-06-12 23:12 UTCEPSS rescore
  51. 2026-06-12 09:59 UTCEG score recompute
  52. 2026-06-12 09:59 UTCGHSA enrichment
  53. 2026-06-11 14:00 UTCEPSS rescore
  54. 2026-06-11 09:11 UTCEG score recompute
  55. 2026-06-11 09:10 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-40986?
CVE-2026-40986 is a medium vulnerability published on June 11, 2026. Spring Web Flow's JavaScript RemotingHandler renders the body of an error response as HTML even when the response is not "text/html", which can result in a scripting attack in the user's browser if the error response from the server contains error details with input reflected from an attacker.…
When was CVE-2026-40986 disclosed?
CVE-2026-40986 was first published in the National Vulnerability Database on June 11, 2026, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40986 actively exploited?
CVE-2026-40986 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-40986?
CVE-2026-40986 has a CVSS v3 base score of 4.8 (NVD).
How do I remediate CVE-2026-40986?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40986, 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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