CVE-2026-40245

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-04-14. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this weekElevated

Also known asEUVD-2026-23133 (ENISA EUVD) · GHSA-wrwh-rpq4-87hf (GitHub Security Advisories)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.5Exploit: No code on recordExposed services: Not assessed

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

Free5GC is an open-source Linux Foundation project for 5th generation (5G) mobile core networks. Versions 4.2.1 and below contain an information disclosure vulnerability in the UDR (Unified Data Repository) service. The handler for GET /nudr-dr/v2/application-data/influenceData/subs-to-notify sends an HTTP 400 error response when required query parameters are missing but does not return afterward. Execution continues into the processor function, which queries the data repository and appends the full list of Traffic Influence Subscriptions, including SUPI/IMSI values, to the response body. An unauthenticated attacker with network access to the 5G Service Based Interface can retrieve stored subscriber identifiers with a single parameterless HTTP GET request. The SUPI is the most sensitive subscriber identifier in 5G networks, and its exposure undermines the privacy guarantees of the 3GPP SUCI concealment mechanism at the core network level. A similar bypass exists when sending a malformed snssai parameter due to the same missing return pattern.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
65
EG Risk 65/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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: No fix is confirmed yet. Restrict network exposure of the affected system within your standard update timelines at low or medium mission impact and sooner than that at high, and watch for a fix.
EPSS PROB
0.5%
EPSS %ILE
43rd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system within your standard update timelines at low or medium mission impact and sooner than that at high, and watch for a fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

April 16, 2026

Last Modified

April 21, 2026

Advisory Details (1)

Auto-updated Jun 11, 2026
No fix on record yet. Sources: github.
GitHub advisoryMentions a patch (unverified)

UDR nudr-dr influenceData/subs-to-notify leaks SUPI in error response body without authentication · Advisory · free5gc/free5gc · GitHub

https://github.com/free5gc/free5gc/security/advisories/GHSA-wrwh-rpq4-87hf

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
gogithub.com/free5gc/udr—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 rangeFix by version rangeDependents
github.com/free5gc/udr—
  • every version through 1.4.2: no fix on record
  • every version on: no fix on record
—

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 40× 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 99 of 234 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 135 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  2. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  3. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  4. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  5. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  6. 2026-10-25 14:31 UTCEG score recompute
  7. 2026-10-24 18:07 UTCEG score recompute
  8. 2026-10-24 18:07 UTCGHSA enrichmentGHSA-wrwh-rpq4-87hf · GitHub severity HIGH · GitHub CVSS 7.5
  9. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  10. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  11. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  12. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  13. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  14. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  15. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  16. 2026-10-18 03:43 UTCEG score recompute
  17. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  18. 2026-10-17 14:54 UTCEG score recompute
  19. 2026-10-17 14:54 UTCGHSA enrichmentGHSA-wrwh-rpq4-87hf · GitHub severity HIGH · GitHub CVSS 7.5
  20. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  21. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  22. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  23. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  24. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  25. 2026-10-12 16:09 UTCEG score recompute
Show 74 more
  1. 2026-10-11 19:52 UTCEG score recompute
  2. 2026-10-11 17:05 UTCEG score recompute
  3. 2026-10-11 14:31 UTCEG score recompute
  4. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  6. 2026-10-10 19:33 UTCOSV refresh
  7. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  8. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  9. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  10. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  11. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  12. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  13. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  14. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  15. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  16. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  17. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  18. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  19. 2026-09-21 06:49 UTCOSV refresh
  20. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  21. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  22. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  23. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  24. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  25. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  26. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  27. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  28. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  29. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  30. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  31. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  32. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  33. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  34. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  35. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  36. 2026-09-02 04:58 UTCOSV refresh
  37. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  38. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  39. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  40. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  41. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  42. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  43. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  44. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  45. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  46. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  47. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  48. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  49. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  50. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  51. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  52. 2026-08-16 06:37 UTCEG score recompute
  53. 2026-08-16 06:37 UTCGHSA enrichmentGHSA-wrwh-rpq4-87hf · GitHub severity HIGH · GitHub CVSS 7.5
  54. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  55. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  56. 2026-08-14 18:12 UTCGHSA enrichmentGHSA-wrwh-rpq4-87hf · GitHub severity HIGH · GitHub CVSS 7.5
  57. 2026-08-14 04:43 UTCEG score recompute
  58. 2026-08-14 04:43 UTCGHSA enrichmentGHSA-wrwh-rpq4-87hf · GitHub severity HIGH · GitHub CVSS 7.5
  59. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  60. 2026-08-13 08:55 UTCGHSA enrichmentGHSA-wrwh-rpq4-87hf · GitHub severity HIGH · GitHub CVSS 7.5
  61. 2026-08-12 18:52 UTCEG score recompute
  62. 2026-08-12 18:52 UTCGHSA enrichmentGHSA-wrwh-rpq4-87hf · GitHub severity HIGH · GitHub CVSS 7.5
  63. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  64. 2026-08-11 17:03 UTCEG score recompute
  65. 2026-08-11 17:03 UTCGHSA enrichmentGHSA-wrwh-rpq4-87hf · GitHub severity HIGH · GitHub CVSS 7.5
  66. 2026-08-11 13:43 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  67. 2026-08-11 02:37 UTCEG score recompute
  68. 2026-08-11 02:37 UTCGHSA enrichmentGHSA-wrwh-rpq4-87hf · GitHub severity HIGH · GitHub CVSS 7.5
  69. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  70. 2026-08-10 05:18 UTCGHSA enrichmentGHSA-wrwh-rpq4-87hf · GitHub severity HIGH · GitHub CVSS 7.5
  71. 2026-08-09 16:39 UTCEG score recompute
  72. 2026-08-09 16:39 UTCGHSA enrichmentGHSA-wrwh-rpq4-87hf · GitHub severity HIGH · GitHub CVSS 7.5
  73. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  74. 2026-08-09 03:59 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-40245?
CVE-2026-40245 is a high-severity vulnerability; its CVE record was published on April 16, 2026. Free5GC is an open-source Linux Foundation project for 5th generation (5G) mobile core networks. Versions 4.2.1 and below contain an information disclosure vulnerability in the UDR (Unified Data Repository) service. The handler for GET /nudr-dr/v2/application-data/influenceData/subs-to-notify sends…
When was the CVE record for CVE-2026-40245 published?
The CVE record for CVE-2026-40245 was published on April 16, 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 April 21, 2026; the record at its source may have been updated since.
Is CVE-2026-40245 actively exploited?
CVE-2026-40245 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (43rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-40245?
CVE-2026-40245 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-40245?
No fix for CVE-2026-40245 is confirmed yet. Until one is published, restrict network exposure of the affected system — for example, keep it off the internet or limit it to trusted networks — and watch for a fix.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-40245

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