CVE-2026-58252

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 61% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.0, 2.12.7, and 2.11.16, an authenticated user could receive messages on denied subjects when a wildcard subscription overlapped with a configured wildcard deny rule but was not a subset of it, and queue subscriptions could also affect delivery to legitimate queue consumers. This issue is fixed in versions 2.14.0, 2.12.7, and 2.11.16.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
39%
KEV
Not listed

Published

July 8, 2026

Last Modified

July 13, 2026

Advisory Details (7)

Auto-updated Jul 8, 2026
Patch available. Sources: github_commit, github_release, github.
github Patch Available

Subscribe Authz Bypass via Wildcard-Overlap · Advisory · nats-io/nats-server · GitHub

Affected: v2.14.0, v2.12.7 and v2.11.16.

https://github.com/nats-io/nats-server/security/advisories/GHSA-wh7g-5m82-pmhr
github_release Patch Available

Release v2.14.0

Patch available: nats-io/nats-server v2.14.0

https://github.com/nats-io/nats-server/releases/tag/v2.14.0
github_release Patch Available

Release v2.12.7

Patch available: nats-io/nats-server v2.12.7

https://github.com/nats-io/nats-server/releases/tag/v2.12.7
github_release Patch Available

Release v2.11.16

Patch available: nats-io/nats-server v2.11.16

https://github.com/nats-io/nats-server/releases/tag/v2.11.16
github_commit

commit e611ca960469 (nats-io/nats-server)

Fix landed in nats-io/nats-server commit e611ca960469 — awaiting tagged release

https://github.com/nats-io/nats-server/commit/e611ca9604697b02d8f22beb76037400a9cf72e6
github_commit

commit a42a6d1e258e (nats-io/nats-server)

Fix landed in nats-io/nats-server commit a42a6d1e258e — awaiting tagged release

https://github.com/nats-io/nats-server/commit/a42a6d1e258eb5c3a2190384d31965a4b715e854
github_commit

commit 8ced85a11497 (nats-io/nats-server)

Fix landed in nats-io/nats-server commit 8ced85a11497 — awaiting tagged release

https://github.com/nats-io/nats-server/commit/8ced85a11497f86704a95d960281480ce037386b

Vendor Advisories for CVE-2026-58252(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
nats-server2.10.1-1 ... 2.9.19-1 (14 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
nats-server2.10.27-1, 2.12.4-1, 2.12.6-1, 2.14.1-1, 2.14.3-1——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
nats-server2.10.27-1, 2.12.4-1, 2.12.6-12.14.1-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 45× 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 152 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-58252?
CVE-2026-58252 is a medium vulnerability published on July 8, 2026. NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.0, 2.12.7, and 2.11.16, an authenticated user could receive messages on denied subjects when a wildcard subscription overlapped with a configured wildcard deny rule but was not a subset…
When was CVE-2026-58252 disclosed?
CVE-2026-58252 was first published in the National Vulnerability Database on July 8, 2026, with the most recent update on July 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58252 actively exploited?
CVE-2026-58252 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 60.6% of all scored CVEs.
What is the CVSS score of CVE-2026-58252?
CVE-2026-58252 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-58252?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58252, 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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