CVE-2026-40972

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 82% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

An attacker on the same network as the remote application may be able to utilize a timing attack to discover information about the remote secret. In extreme circumstances this could result in the attacker determining the secret and uploading changed classes, thereby achieving remote code execution in the remote application.

Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19), 2.7.0–2.7.32 (fix 2.7.33); DevTools remote secret comparison. Versions that are no longer supported are also affected per vendor advisory.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
34
EG Risk 34/100

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
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.3%
EPSS %ILE
23rd
KEV
Not listed

Published

April 28, 2026

Last Modified

July 24, 2026

Advisory Details (1)

Auto-updated May 6, 2026
Patch available.
generic

CVE-2026-40972: DevTools remote secret comparison is vulnerable to timing attacks

https://spring.io/security/cve-2026-40972

Vendor Advisories for CVE-2026-40972(3)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatspring-boot2026-06-10redhat
redhatdevspaces/pluginregistry-rhel9:17793594232026-05-28redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
org.springframework.boot:spring-boot-devtools1.3.0.RELEASE ... 2.7.9 (161 versions)
  • 4.0.0 up to 4.0.6: fixed in 4.0.6
  • 3.5.0 up to 3.5.14: fixed in 3.5.14
  • 3.4.0 through 3.4.15: no fix on record
  • 3.3.0 through 3.3.18: no fix on record
  • every version through 2.7.32: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 24× 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.

Showing the most recent 100 of 217 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:12 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-06 15:17 UTCEPSS rescore
  5. 2026-10-05 17:43 UTCEPSS rescore
  6. 2026-10-04 23:22 UTCEPSS rescore
  7. 2026-10-03 14:25 UTCEPSS rescore
  8. 2026-10-01 19:50 UTCEPSS rescore
  9. 2026-09-30 15:03 UTCEPSS rescore
  10. 2026-09-27 13:48 UTCEPSS rescore
  11. 2026-09-26 15:58 UTCEPSS rescore
  12. 2026-09-23 17:53 UTCEPSS rescore
  13. 2026-09-23 07:15 UTCOSV refresh
  14. 2026-09-20 20:15 UTCEPSS rescore
  15. 2026-09-18 19:28 UTCEPSS rescore
  16. 2026-09-17 19:31 UTCEPSS rescore
  17. 2026-09-16 14:08 UTCEPSS rescore
  18. 2026-09-16 05:15 UTCEPSS rescore
  19. 2026-09-15 03:11 UTCEPSS rescore
  20. 2026-09-13 16:47 UTCEPSS rescore
  21. 2026-09-12 15:01 UTCEPSS rescore
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-11 09:37 UTCEPSS rescore
  24. 2026-09-10 09:34 UTCEPSS rescore
  25. 2026-09-08 22:00 UTCEPSS rescore
Show 75 more
  1. 2026-09-07 16:01 UTCEPSS rescore
  2. 2026-09-06 13:47 UTCEPSS rescore
  3. 2026-09-04 05:06 UTCEPSS rescore
  4. 2026-09-04 01:46 UTCOSV refresh
  5. 2026-09-02 14:12 UTCEPSS rescore
  6. 2026-09-01 13:53 UTCEPSS rescore
  7. 2026-09-01 04:39 UTCEPSS rescore
  8. 2026-08-30 19:17 UTCEPSS rescore
  9. 2026-08-30 01:22 UTCEPSS rescore
  10. 2026-08-28 21:41 UTCEPSS rescore
  11. 2026-08-27 14:25 UTCEPSS rescore
  12. 2026-08-26 14:46 UTCEPSS rescore
  13. 2026-08-25 13:49 UTCEPSS rescore
  14. 2026-08-23 00:19 UTCEPSS rescore
  15. 2026-08-21 23:49 UTCEPSS rescore
  16. 2026-08-20 22:55 UTCEPSS rescore
  17. 2026-08-19 17:03 UTCEPSS rescore
  18. 2026-08-18 13:48 UTCEPSS rescore
  19. 2026-08-17 14:00 UTCEG score recompute
  20. 2026-08-17 14:00 UTCVendor advisory
  21. 2026-08-17 13:47 UTCEPSS rescore
  22. 2026-08-16 14:56 UTCEPSS rescore
  23. 2026-08-16 05:36 UTCEG score recompute
  24. 2026-08-16 05:36 UTCVendor advisory
  25. 2026-08-16 02:14 UTCEPSS rescore
  26. 2026-08-15 01:30 UTCEPSS rescore
  27. 2026-08-14 15:31 UTCVendor advisory
  28. 2026-08-14 04:00 UTCEG score recompute
  29. 2026-08-14 04:00 UTCVendor advisory
  30. 2026-08-13 22:00 UTCEPSS rescore
  31. 2026-08-13 08:25 UTCVendor advisory
  32. 2026-08-12 17:40 UTCEG score recompute
  33. 2026-08-12 17:40 UTCVendor advisory
  34. 2026-08-12 13:51 UTCEPSS rescore
  35. 2026-08-11 16:38 UTCEG score recompute
  36. 2026-08-11 16:38 UTCVendor advisory
  37. 2026-08-11 13:43 UTCEPSS rescore
  38. 2026-08-11 02:00 UTCEG score recompute
  39. 2026-08-11 02:00 UTCVendor advisory
  40. 2026-08-11 00:00 UTCEPSS rescore
  41. 2026-08-10 13:41 UTCVendor advisory
  42. 2026-08-10 02:09 UTCVendor advisory
  43. 2026-08-09 14:40 UTCEG score recompute
  44. 2026-08-09 14:40 UTCVendor advisory
  45. 2026-08-09 13:46 UTCEPSS rescore
  46. 2026-08-09 03:10 UTCEG score recompute
  47. 2026-08-09 03:10 UTCVendor advisory
  48. 2026-08-08 16:37 UTCEPSS rescore
  49. 2026-08-08 03:41 UTCEG score recompute
  50. 2026-08-08 03:41 UTCVendor advisory
  51. 2026-08-07 16:12 UTCVendor advisory
  52. 2026-08-07 04:36 UTCEG score recompute
  53. 2026-08-07 04:36 UTCVendor advisory
  54. 2026-08-06 13:46 UTCEPSS rescore
  55. 2026-08-06 10:20 UTCVendor advisory
  56. 2026-08-05 22:48 UTCEG score recompute
  57. 2026-08-05 22:48 UTCVendor advisory
  58. 2026-08-05 19:17 UTCEPSS rescore
  59. 2026-08-04 15:10 UTCEPSS rescore
  60. 2026-08-04 10:38 UTCEPSS rescore
  61. 2026-08-03 20:51 UTCEG score recompute
  62. 2026-08-03 20:51 UTCVendor advisory
  63. 2026-08-03 10:36 UTCEPSS rescore
  64. 2026-08-02 21:39 UTCVendor advisory
  65. 2026-08-02 10:10 UTCEG score recompute
  66. 2026-08-02 10:10 UTCVendor advisory
  67. 2026-08-01 04:16 UTCEPSS rescore
  68. 2026-07-30 16:28 UTCEPSS rescore
  69. 2026-07-30 01:30 UTCEPSS rescore
  70. 2026-07-28 15:36 UTCEPSS rescore
  71. 2026-07-27 14:13 UTCEPSS rescore
  72. 2026-07-26 14:54 UTCEPSS rescore
  73. 2026-07-26 14:54 UTCEPSS rescore
  74. 2026-07-26 08:34 UTCEG score recompute
  75. 2026-07-26 08:34 UTCVendor advisory

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Frequently asked(5)

What is CVE-2026-40972?
CVE-2026-40972 is a high vulnerability published on April 28, 2026. An attacker on the same network as the remote application may be able to utilize a timing attack to discover information about the remote secret. In extreme circumstances this could result in the attacker determining the secret and uploading changed classes, thereby achieving remote code execution…
When was CVE-2026-40972 disclosed?
CVE-2026-40972 was first published on April 28, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40972 actively exploited?
CVE-2026-40972 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (23rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-40972?
CVE-2026-40972 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-40972?
A fix for CVE-2026-40972 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-40972 are linked in the Vendor Advisories panel on this page.

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