CVE-2026-41136

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-04-22. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

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

free5GC AMF provides Access & Mobility Management Function (AMF) for free5GC, an an open-source project for 5th generation (5G) mobile core networks. Prior to version 1.4.3, the HTTPUEContextTransfer handler in internal/sbi/api_communication.go does not include a default case in the Content-Type switch statement. When a request arrives with an unsupported Content-Type, the deserialization step is silently skipped, err remains nil, and the processor is invoked with a completely uninitialized UeContextTransferRequest object. Version 1.4.3 contains a fix.

CVSS v3
5.3
EG Score
5.3(medium)
EPSS
20.1%
KEV
Not listed

Published

April 22, 2026

Last Modified

April 23, 2026

Advisory Details (2)

Auto-updated Jun 14, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github.
github Patch Available🟡 PoC Available

[AMF] Missing default case in Content-Type switch in HTTPUEContextTransfer · Advisory · free5gc/free5gc · GitHub

https://github.com/free5gc/free5gc/security/advisories/GHSA-r99v-75p9-xqm5
github_release Patch Available

v1.4.3

Patch available: free5gc/amf v1.4.3

https://github.com/free5gc/amf/releases/tag/v1.4.3

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
gogithub.com/free5gc/amf—ghsa

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)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/free5gc/amf———

Weakness Classification(1)

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

Data Freshness Timeline

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

Frequently asked(5)

What is CVE-2026-41136?
CVE-2026-41136 is a medium vulnerability published on April 22, 2026. free5GC AMF provides Access & Mobility Management Function (AMF) for free5GC, an an open-source project for 5th generation (5G) mobile core networks. Prior to version 1.4.3, the HTTPUEContextTransfer handler in internal/sbi/api_communication.go does not include a default case in the Content-Type…
When was CVE-2026-41136 disclosed?
CVE-2026-41136 was first published in the National Vulnerability Database on April 22, 2026, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41136 actively exploited?
CVE-2026-41136 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 20.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-41136?
CVE-2026-41136 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-41136?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41136, 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.

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