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
44%
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-rhel9:17849086822026-08-03redhat
redhatopenshift-service-mesh/istio-proxyv2-rhel9:17849086392026-08-03redhat

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 7× in last 7d / 34× 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 161 total refreshes for this CVE.

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

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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 56.0% 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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