CVE-2026-48058

MEDIUMPre-NVD 4.64.6—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 91% 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
4.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 4.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.2, internal/web/session.go and internal/web/oidc.go set HttpOnly and SameSite=Lax on every cookie but never Secure. A single plaintext request to the origin (operator on a LAN, mistyped URL, HTTP→HTTPS not strictly enforced, reverse proxy misconfiguration) discloses the session. This issue has been patched in version 0.3.2.

CVSS v3
4.6
EG Score
4.6MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100

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
Severity46% × 45%
Exploitation0% × 40%
Automatability30% × 15%
EPSS PROB
0.3%
EPSS %ILE
22nd
KEV
Not listed

Published

June 10, 2026

Last Modified

July 30, 2026

Advisory Details (3)

Auto-updated Jul 28, 2026
Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

v0.3.2

Patch available: forgekeep/nebula-mesh v0.3.2

https://github.com/forgekeep/nebula-mesh/releases/tag/v0.3.2
github_commit

commit ffdd67dbf221 (forgekeep/nebula-mesh)

Fix landed in forgekeep/nebula-mesh commit ffdd67dbf221 — awaiting tagged release

https://github.com/forgekeep/nebula-mesh/commit/ffdd67dbf221d9a5855c39fbe11b49c245048d85
githubMentions a patch (unverified)

Session and OIDC state cookies lack the Secure attribute · Advisory · forgekeep/nebula-mesh · GitHub

https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-rqfj-vv8r-xhqc

Vendor Advisories for CVE-2026-48058(1)

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

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFix by version rangeDependents
github.com/juev/nebula-mesh—
  • every version up to 0.3.2: fixed in 0.3.2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 21× 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. 2026-10-06 15:18 UTCEPSS rescore
  2. 2026-10-05 17:43 UTCEPSS rescore
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-03 08:39 UTCOSV refresh
  6. 2026-10-01 19:50 UTCEPSS rescore
  7. 2026-09-30 15:03 UTCEPSS rescore
  8. 2026-09-28 13:51 UTCEPSS rescore
  9. 2026-09-27 13:48 UTCEPSS rescore
  10. 2026-09-26 15:59 UTCEPSS rescore
  11. 2026-09-26 00:27 UTCEPSS rescore
  12. 2026-09-23 17:53 UTCEPSS rescore
  13. 2026-09-20 20:16 UTCEPSS rescore
  14. 2026-09-18 19:28 UTCEPSS rescore
  15. 2026-09-16 14:08 UTCEPSS rescore
  16. 2026-09-16 05:15 UTCEPSS rescore
  17. 2026-09-14 04:14 UTCEG score recompute
  18. 2026-09-13 16:47 UTCEPSS rescore
  19. 2026-09-11 14:53 UTCEPSS rescore
  20. 2026-09-10 09:35 UTCEPSS rescore
  21. 2026-09-08 22:01 UTCEPSS rescore
  22. 2026-09-07 16:01 UTCEPSS rescore
  23. 2026-09-06 13:47 UTCEPSS rescore
  24. 2026-09-04 05:06 UTCEPSS rescore
  25. 2026-09-02 14:12 UTCEPSS rescore
Show 60 more
  1. 2026-09-01 13:54 UTCEPSS rescore
  2. 2026-08-31 00:10 UTCEG score recompute
  3. 2026-08-30 19:17 UTCEPSS rescore
  4. 2026-08-30 01:22 UTCEPSS rescore
  5. 2026-08-28 21:41 UTCEPSS rescore
  6. 2026-08-26 14:46 UTCEPSS rescore
  7. 2026-08-25 00:20 UTCEG score recompute
  8. 2026-08-23 10:46 UTCEG score recompute
  9. 2026-08-23 00:19 UTCEPSS rescore
  10. 2026-08-21 23:49 UTCEPSS rescore
  11. 2026-08-21 15:50 UTCEG score recompute
  12. 2026-08-20 22:55 UTCEPSS rescore
  13. 2026-08-20 17:16 UTCEG score recompute
  14. 2026-08-19 17:04 UTCEPSS rescore
  15. 2026-08-19 14:56 UTCEG score recompute
  16. 2026-08-18 13:48 UTCEPSS rescore
  17. 2026-08-17 01:43 UTCEG score recompute
  18. 2026-08-16 14:56 UTCEPSS rescore
  19. 2026-08-16 03:18 UTCEG score recompute
  20. 2026-08-16 02:14 UTCEPSS rescore
  21. 2026-08-15 04:53 UTCEG score recompute
  22. 2026-08-15 01:30 UTCEPSS rescore
  23. 2026-08-14 06:19 UTCEG score recompute
  24. 2026-08-13 22:00 UTCEPSS rescore
  25. 2026-08-13 07:54 UTCEG score recompute
  26. 2026-08-12 13:51 UTCEPSS rescore
  27. 2026-08-12 08:55 UTCEG score recompute
  28. 2026-08-11 10:30 UTCEG score recompute
  29. 2026-08-11 00:00 UTCEPSS rescore
  30. 2026-08-10 12:06 UTCEG score recompute
  31. 2026-08-09 13:46 UTCEPSS rescore
  32. 2026-08-09 13:39 UTCEG score recompute
  33. 2026-08-08 16:37 UTCEPSS rescore
  34. 2026-08-07 16:50 UTCEG score recompute
  35. 2026-08-06 18:25 UTCEG score recompute
  36. 2026-08-06 13:47 UTCEPSS rescore
  37. 2026-08-05 20:00 UTCEG score recompute
  38. 2026-08-05 19:17 UTCEPSS rescore
  39. 2026-08-04 15:54 UTCEG score recompute
  40. 2026-08-04 15:10 UTCEPSS rescore
  41. 2026-08-04 10:39 UTCEPSS rescore
  42. 2026-08-03 14:50 UTCEG score recompute
  43. 2026-08-03 10:36 UTCEPSS rescore
  44. 2026-08-02 12:02 UTCEG score recompute
  45. 2026-08-02 02:27 UTCEPSS rescore
  46. 2026-08-01 13:37 UTCEG score recompute
  47. 2026-08-01 04:16 UTCEPSS rescore
  48. 2026-07-30 16:47 UTCEG score recompute
  49. 2026-07-30 16:28 UTCEPSS rescore
  50. 2026-07-30 09:47 UTCEG score recompute
  51. 2026-07-30 01:30 UTCEPSS rescore
  52. 2026-07-28 19:27 UTCEG score recompute
  53. 2026-07-28 18:59 UTCEG score recompute▲ 4.60
  54. 2026-07-28 18:57 UTCMITRE cvelistV5CVSS v3 → 4.6 · CVSS v4 → 4.6
  55. 2026-07-26 20:57 UTCEG score recompute
  56. 2026-07-23 03:18 UTCEG score recompute
  57. 2026-06-14 23:18 UTCEPSS rescore
  58. 2026-06-13 23:00 UTCEPSS rescore
  59. 2026-06-12 23:12 UTCEPSS rescore
  60. 2026-06-10 19:17 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-48058?
CVE-2026-48058 is a medium vulnerability published on June 10, 2026. nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.2, internal/web/session.go and internal/web/oidc.go set HttpOnly and SameSite=Lax on every cookie but never Secure. A single plaintext request to the origin (operator on a LAN, mistyped…
When was CVE-2026-48058 disclosed?
CVE-2026-48058 was first published on June 10, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48058 actively exploited?
CVE-2026-48058 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (22nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-48058?
CVE-2026-48058 has a CVSS base score of 4.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-48058?
A fix for CVE-2026-48058 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-48058 are linked in the Vendor Advisories panel on this page.

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