CVE-2026-40996

MEDIUMPre-NVD 4.84.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

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, GitHub Security Advisory, a secondary CVSS source
4.8EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 4.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Wss4jSecurityInterceptor defaulted allowRSA15KeyTransportAlgorithm to true, overriding Apache WSS4J's safer default for validation RequestData. Inbound WS-Security decryption could therefore accept RSA PKCS#1 v1.5 (rsa-1_5) encrypted key material unless operators explicitly reconfigured the flag.

Affected versions: Spring Web Services 5.0.0 through 5.0.1; 4.1.0 through 4.1.3; 4.0.0 through 4.0.18; 3.1.0 through 3.1.8.

CVSS v3
4.8
EG Score
4.8MEDIUMmedium confidence
EG Risk
22
EG Risk 22/100

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 (value × EchelonGraph’s weight)
Severity48% × 45%
The EG Score, 4.8 of 10.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
3rd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

June 11, 2026

Last Modified

September 4, 2026

Advisory Details (1)

Auto-updated Jun 17, 2026
Patch available.
Web page

CVE-2026-40996: Inbound WS-Security allows RSA PKCS#1 v1.5 key transport by default

https://spring.io/security/cve-2026-40996

Vendor Advisories for CVE-2026-40996(1)

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

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
org.springframework.ws:spring-ws-security3.1.0 ... 3.1.8 (9 versions)
  • 5.0.0 up to 5.0.2: fixed in 5.0.2
  • 4.1.0 up to 4.1.4: fixed in 4.1.4
  • 4.0.0 through 4.0.18: no fix on record
  • 3.1.0 through 3.1.8: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 27× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 214 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 114 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  2. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  4. 2026-10-12 16:09 UTCEG score recompute
  5. 2026-10-11 19:51 UTCEG score recompute
  6. 2026-10-11 17:04 UTCEG score recompute
  7. 2026-10-11 14:30 UTCEG score recompute
  8. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  11. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  13. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  14. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  16. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  17. 2026-10-03 08:39 UTCOSV refresh
  18. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  19. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  20. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  21. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  22. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  23. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  24. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  25. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
Show 75 more
  1. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  3. 2026-09-14 04:12 UTCEG score recompute
  4. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  5. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  6. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  7. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  8. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  9. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  10. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  11. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  12. 2026-09-04 17:13 UTCEG score recompute
  13. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  14. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  15. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  16. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  17. 2026-08-31 00:07 UTCEG score recompute
  18. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  19. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  20. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  21. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  22. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  23. 2026-08-25 00:09 UTCEG score recompute
  24. 2026-08-23 10:44 UTCEG score recompute
  25. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  26. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  27. 2026-08-21 17:54 UTCEG score recompute
  28. 2026-08-21 17:54 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  29. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  30. 2026-08-20 17:16 UTCEG score recompute
  31. 2026-08-20 17:16 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  32. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  33. 2026-08-19 14:55 UTCEG score recompute
  34. 2026-08-19 14:55 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  35. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  36. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  37. 2026-08-17 08:28 UTCEG score recompute
  38. 2026-08-17 08:28 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  39. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  40. 2026-08-16 09:38 UTCEG score recompute
  41. 2026-08-16 09:38 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  42. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  43. 2026-08-15 10:48 UTCEG score recompute
  44. 2026-08-15 10:48 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  45. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  46. 2026-08-14 09:36 UTCEG score recompute
  47. 2026-08-14 09:36 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  48. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  49. 2026-08-13 10:45 UTCEG score recompute
  50. 2026-08-13 10:45 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  51. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  52. 2026-08-12 11:55 UTCEG score recompute
  53. 2026-08-12 11:55 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  54. 2026-08-11 13:43 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  55. 2026-08-11 13:04 UTCEG score recompute
  56. 2026-08-11 13:04 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  57. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  58. 2026-08-10 14:13 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  59. 2026-08-09 15:22 UTCEG score recompute
  60. 2026-08-09 15:22 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  61. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  62. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  63. 2026-08-08 16:32 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  64. 2026-08-07 17:41 UTCEG score recompute
  65. 2026-08-07 17:41 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  66. 2026-08-06 18:50 UTCEG score recompute
  67. 2026-08-06 18:50 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  68. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  69. 2026-08-05 19:59 UTCEG score recompute
  70. 2026-08-05 19:59 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  71. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  72. 2026-08-04 15:52 UTCEG score recompute
  73. 2026-08-04 15:52 UTCGHSA enrichmentGHSA-p7qj-2q5w-f9r7 · GitHub CVSS 4.8
  74. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  75. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.1% · 2nd percentile

Frequently asked(5)

What is CVE-2026-40996?
CVE-2026-40996 is a medium-severity vulnerability; its CVE record was published on June 11, 2026. Wss4jSecurityInterceptor defaulted allowRSA15KeyTransportAlgorithm to true, overriding Apache WSS4J's safer default for validation RequestData. Inbound WS-Security decryption could therefore accept RSA PKCS#1 v1.5 (rsa-1_5) encrypted key material unless operators explicitly reconfigured the flag.…
When was the CVE record for CVE-2026-40996 published?
The CVE record for CVE-2026-40996 was published on June 11, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 4, 2026; the record at its source may have been updated since.
Is CVE-2026-40996 actively exploited?
CVE-2026-40996 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-40996?
CVE-2026-40996 has a CVSS base score of 4.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-40996?
A fix for CVE-2026-40996 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-40996 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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