CVE-2026-44315

CRITICALNVD 9.49.4—
EchelonGraph scoreMEDIUM confidence

Score 9.4 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-08. NVD baseline CVSS 9.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this weekElevated
9.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.4Exploit: Elevated riskExposed: 0

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

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the 3gpp-pfd-management API without inbound OAuth2/bearer-token authorization. A network attacker who can reach NEF on the SBI can create, read, and delete PFD-management transaction state with a forged or arbitrary bearer token (e.g. Authorization: Bearer not-a-real-token). The route group is also reachable even when the running config's ServiceList does not declare it, so operators who think they disabled the service via config are still exposed. This vulnerability is fixed in 4.2.2.

CVSS v3
9.4
EG Score
9.4(medium)
EG Risk
73(Attend)
EG Risk 73/100SSVC: Attend

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
Severity94% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

May 27, 2026

Last Modified

May 28, 2026

Advisory Details (3)

Auto-updated Sep 15, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_pr.
github Patch Available🟡 PoC Available

NEF 3gpp-pfd-management API is unauthenticated; forged bearer tokens can create, read, and delete PFD transactions · Advisory · free5gc/free5gc · GitHub

https://github.com/free5gc/free5gc/security/advisories/GHSA-5f62-53r8-qrqf
github_pr

fix(sbi): enforce inbound OAuth2 on NEF service routes

Upstream fix in progress (PR #23 · free5gc/nef, state=closed)

https://github.com/free5gc/nef/pull/23
generic

[Bugs] NEF `3gpp-pfd-management` is unauthenticated: forged-token requests can create, read, and delete PFD transactions · Issue #858 · free5gc/free5gc · GitHub

https://github.com/free5gc/free5gc/issues/858

Vendor Advisories for CVE-2026-44315(1)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
gogithub.com/free5gc/nef—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/nef———

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 41× 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 341 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-44315?
CVE-2026-44315 is a critical vulnerability published on May 27, 2026. free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the 3gpp-pfd-management API without inbound OAuth2/bearer-token authorization. A network attacker who can reach NEF on the SBI can create, read, and delete PFD-management transaction state with a…
When was CVE-2026-44315 disclosed?
CVE-2026-44315 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on May 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44315 actively exploited?
CVE-2026-44315 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 75.8% of all scored CVEs.
What is the CVSS score of CVE-2026-44315?
CVE-2026-44315 has a CVSS v3 base score of 9.4 (NVD).
How do I remediate CVE-2026-44315?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44315, 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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