CVE-2026-48044

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: 0.5%, top 59% 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
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.23.0 until 1.35.11, 1.36.7, 1.37.3, and 1.38.1, a vulnerability has been identified in Envoy's zstd decompressor implementation (ZstdDecompressorImpl). When zstd decompression is enabled, processing a specially crafted, highly compressed zstd payload can lead to massive memory allocation. An attacker can exploit this to cause severe memory exhaustion, potentially resulting in an Out-Of-Memory (OOM) kill and Denial of Service (DoS) for the Envoy proxy. 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
38(Track)
EG Risk 38/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
41%
KEV
Not listed

Published

June 26, 2026

Last Modified

June 29, 2026

Advisory Details (1)

Auto-updated Jun 26, 2026
Patch available. Sources: github.
github Patch Available

Zstd Decompressor: Ratio Check at Wrong Loop Depth lead to memory explosion · Advisory · envoyproxy/envoy · GitHub

https://github.com/envoyproxy/envoy/security/advisories/GHSA-m3p9-47wh-88wg

Vendor Advisories for CVE-2026-48044(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-rhel9:17849086822026-08-03redhat
redhatopenshift-service-mesh/istio-proxyv2-rhel9:17849537432026-08-03redhat
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 11× in last 7d / 47× 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 155 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. 2026-08-24 21:49 UTCEG score recompute
  8. 2026-08-24 21:49 UTCVendor advisory
  9. 2026-08-24 06:51 UTCVendor advisory
  10. 2026-08-23 19:42 UTCVendor advisory
  11. 2026-08-23 08:32 UTCEG score recompute
  12. 2026-08-23 08:32 UTCVendor advisory
  13. 2026-08-23 00:19 UTCEPSS rescore
  14. 2026-08-22 21:03 UTCVendor advisory
  15. 2026-08-22 09:30 UTCEG score recompute
  16. 2026-08-22 09:30 UTCVendor advisory
  17. 2026-08-21 23:49 UTCEPSS rescore
  18. 2026-08-21 17:23 UTCVendor advisory
  19. 2026-08-21 05:08 UTCEG score recompute
  20. 2026-08-21 05:08 UTCVendor advisory
  21. 2026-08-20 22:55 UTCEPSS rescore
  22. 2026-08-20 17:57 UTCVendor advisory
  23. 2026-08-20 06:48 UTCEG score recompute
  24. 2026-08-20 06:48 UTCVendor advisory
  25. 2026-08-19 17:04 UTCEPSS rescore
  26. 2026-08-19 12:37 UTCVendor advisory
  27. 2026-08-18 23:54 UTCEG score recompute
  28. 2026-08-18 23:54 UTCVendor advisory
  29. 2026-08-18 13:48 UTCEPSS rescore
  30. 2026-08-17 13:47 UTCEPSS rescore
  31. 2026-08-17 11:49 UTCVendor advisory
  32. 2026-08-17 00:27 UTCEG score recompute
  33. 2026-08-17 00:27 UTCVendor advisory
  34. 2026-08-16 14:56 UTCEPSS rescore
  35. 2026-08-16 13:18 UTCEG score recompute
  36. 2026-08-16 13:18 UTCVendor advisory
  37. 2026-08-16 02:14 UTCEPSS rescore
  38. 2026-08-16 02:09 UTCVendor advisory
  39. 2026-08-15 15:00 UTCVendor advisory
  40. 2026-08-15 03:51 UTCEG score recompute
  41. 2026-08-15 03:51 UTCVendor advisory
  42. 2026-08-15 01:30 UTCEPSS rescore
  43. 2026-08-14 16:41 UTCVendor advisory
  44. 2026-08-14 05:32 UTCEG score recompute
  45. 2026-08-14 05:32 UTCVendor advisory
  46. 2026-08-13 22:00 UTCEPSS rescore
  47. 2026-08-13 18:23 UTCVendor advisory
  48. 2026-08-13 05:54 UTCVendor advisory
  49. 2026-08-12 18:44 UTCEG score recompute
  50. 2026-08-12 18:44 UTCVendor advisory
  51. 2026-08-12 13:51 UTCEPSS rescore
  52. 2026-08-12 07:35 UTCVendor advisory
  53. 2026-08-11 20:26 UTCEG score recompute
  54. 2026-08-11 20:26 UTCVendor advisory
  55. 2026-08-11 09:17 UTCEG score recompute
  56. 2026-08-11 09:17 UTCVendor advisory
  57. 2026-08-11 00:00 UTCEPSS rescore
  58. 2026-08-10 22:08 UTCVendor advisory
  59. 2026-08-10 10:59 UTCVendor advisory
  60. 2026-08-09 23:47 UTCEG score recompute
  61. 2026-08-09 23:47 UTCVendor advisory
  62. 2026-08-09 13:46 UTCEPSS rescore
  63. 2026-08-09 12:39 UTCVendor advisory
  64. 2026-08-09 01:30 UTCEG score recompute
  65. 2026-08-09 01:30 UTCVendor advisory
  66. 2026-08-08 16:37 UTCEPSS rescore
  67. 2026-08-08 14:21 UTCVendor advisory
  68. 2026-08-08 03:11 UTCEG score recompute
  69. 2026-08-08 03:11 UTCVendor advisory
  70. 2026-08-07 16:02 UTCVendor advisory
  71. 2026-08-07 04:53 UTCVendor advisory
  72. 2026-08-06 17:44 UTCEG score recompute
  73. 2026-08-06 17:44 UTCVendor advisory
  74. 2026-08-06 13:47 UTCEPSS rescore
  75. 2026-08-06 06:34 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-48044?
CVE-2026-48044 is a high vulnerability published on June 26, 2026. Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.23.0 until 1.35.11, 1.36.7, 1.37.3, and 1.38.1, a vulnerability has been identified in Envoy's zstd decompressor implementation (ZstdDecompressorImpl). When zstd decompression is enabled, processing a…
When was CVE-2026-48044 disclosed?
CVE-2026-48044 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-2026-48044 actively exploited?
CVE-2026-48044 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 59.1% of all scored CVEs.
What is the CVSS score of CVE-2026-48044?
CVE-2026-48044 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-48044?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48044, 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.

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