CVE-2026-41853

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-06-09. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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.

Spring MVC and WebFlux applications are vulnerable to Multipart request smuggling attacks.

Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.

CVSS v3
5.3
EG Score
5.3(medium)
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
8%
KEV
Not listed

Published

June 9, 2026

Last Modified

July 23, 2026

Advisory Details (1)

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

CVE-2026-41853: Spring Framework Multipart Request Smuggling in Spring MVC and WebFlux

https://spring.io/security/cve-2026-41853

Vendor Advisories for CVE-2026-41853(1)

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

Affected Packages

(6 across 5 ecosystems)
Maven(2)
PackageVulnerable rangeFixed inDependents
org.springframework:spring-webflux5.0.0.RELEASE ... 5.3.9 (108 versions)6.2.19—
org.springframework:spring-webmvc1.0 ... 5.3.9 (250 versions)6.2.19—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libspring-java4.3.30-1, 4.3.30-2, 4.3.30-3, 4.3.30-4——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libspring-java4.3.30-2, 4.3.30-3, 4.3.30-4——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libspring-java4.3.30-3, 4.3.30-4——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libspring-java4.3.30-3, 4.3.30-4——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 30× 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 164 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-41853?
CVE-2026-41853 is a medium vulnerability published on June 9, 2026. Spring MVC and WebFlux applications are vulnerable to Multipart request smuggling attacks. Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.
When was CVE-2026-41853 disclosed?
CVE-2026-41853 was first published in the National Vulnerability Database on June 9, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41853 actively exploited?
CVE-2026-41853 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 91.5% of all scored CVEs.
What is the CVSS score of CVE-2026-41853?
CVE-2026-41853 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-41853?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41853, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-41853

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