CVE-2026-48042

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6%, top 55% 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 weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: Elevated riskExposed: 0

A fix is available — apply it.

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, destructor of JSON Object results in stack overflow when deeply O(100K) nested objects are present. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
65(Attend)
EG Risk 65/100SSVC: 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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
45%
KEV
Not listed

Published

June 26, 2026

Last Modified

June 29, 2026

Advisory Details (2)

Auto-updated Jun 26, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Stack overflow in destructor of highly nested JSON · Advisory · envoyproxy/envoy · GitHub

https://github.com/envoyproxy/envoy/security/advisories/GHSA-f24p-rxw2-g6pv
generic

envoy/source/common/json/json_loader.h at 099a9d71ebfd8aa9f823e1738b34138cb634a07b · envoyproxy/envoy · GitHub

https://github.com/envoyproxy/envoy/blob/099a9d71ebfd8aa9f823e1738b34138cb634a07b/source/common/json/json_loader.h#L21

Vendor Advisories for CVE-2026-48042(5)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatopenshift-service-mesh/istio-proxyv2-rhel9:17849535562026-08-03redhat
redhatopenshift-service-mesh/istio-proxyv2-rhel9:17849537432026-08-03redhat
redhatopenshift-service-mesh/istio-proxyv2-rhel9:17849086392026-08-03redhat
redhatopenshift-service-mesh/istio-proxyv2-rhel9:17849086822026-08-03redhat

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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 50× 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 157 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-48042?
CVE-2026-48042 is a high vulnerability published on June 26, 2026. Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, destructor of JSON Object results in stack overflow when deeply O(100K) nested objects are present. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1.
When was CVE-2026-48042 disclosed?
CVE-2026-48042 was first published in the National Vulnerability Database on June 26, 2026, with the most recent update on June 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48042 actively exploited?
CVE-2026-48042 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 54.8% of all scored CVEs.
What is the CVSS score of CVE-2026-48042?
CVE-2026-48042 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-48042?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48042, 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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