CVE-2026-8288

MEDIUMNVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory (severity: LOW) published 2026-05-11. NVD baseline CVSS 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: Elevated riskExposed: 0

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

A vulnerability was determined in Open5GS up to 2.7.7. This affects the function gsm_handle_pdu_session_modification_qos_flow_descriptions of the file src/smf/gsm-handler.c of the component SMF. Executing a manipulation of the argument n1SmMsg can lead to denial of service. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The pull request to fix this issue awaits acceptance.

CVSS v3
4.3
EG Score
4.3(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity43% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

May 11, 2026

Last Modified

May 12, 2026

Advisory Details (3)

Auto-updated May 11, 2026
No patch confirmed yet.
generic

[SMF] Pre-validate Modification Request QoS Flow parameters before mutation by MrBrownieCGN · Pull Request #4513 · open5gs/open5gs · GitHub

https://github.com/open5gs/open5gs/pull/4513
generic

[Bug]: SMF crash on `POST /nsmf-pdusession/v1/sm-contexts/{smContextRef}/modify` with invalid bitrate unit in `n1SmMsg` QoS flow descriptions · Issue #4452 · open5gs/open5gs · GitHub

https://github.com/open5gs/open5gs/issues/4452
generic

GitHub - open5gs/open5gs: Open5GS is a C-language Open Source implementation for 5G Core and EPC, i.e. the core network of LTE/NR network (Release-17) · GitHub

https://github.com/open5gs/open5gs/

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 33× 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 171 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8288?
CVE-2026-8288 is a medium vulnerability published on May 11, 2026. A vulnerability was determined in Open5GS up to 2.7.7. This affects the function gsmhandlepdusessionmodificationqosflow_descriptions of the file src/smf/gsm-handler.c of the component SMF. Executing a manipulation of the argument n1SmMsg can lead to denial of service. The attack may be launched…
When was CVE-2026-8288 disclosed?
CVE-2026-8288 was first published in the National Vulnerability Database on May 11, 2026, with the most recent update on May 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8288 actively exploited?
CVE-2026-8288 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 68.7% of all scored CVEs.
What is the CVSS score of CVE-2026-8288?
CVE-2026-8288 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-8288?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8288, 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

Explore the affected products and dependency analysis for CVE-2026-8288

Explore →

Is Your Infrastructure Affected by CVE-2026-8288?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs