CVE Explorer
CVE-2026-48044
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) kil
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"envoy","vendor":"envoyproxy","versions":[{"status":"affected","version":">= 1.38.0, < 1.38.1"},{"status":"affected","version":">= 1.37.0, < 1.37.3"},{"status":"affected","version":">= 1.36.0, < 1.36.7"},{"status":"affected","version":">= 1.23.0, < 1.35.11"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:0f200c5e70ede200ef2b2f7b392eeaa02df16974de2a5f021e59946bee3ed6fb · sha256:e0cd6aff3298a3e0… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:0f200c5e70ede200ef2b2f7b392eeaa02df16974de2a5f021e59946bee3ed6fb · sha256:e0cd6aff3298a3e0… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-409","description":"CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:0f200c5e70ede200ef2b2f7b392eeaa02df16974de2a5f021e59946bee3ed6fb · sha256:e0cd6aff3298a3e0… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-m3p9-47wh-88wg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-m3p9-47wh-88wg"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:0f200c5e70ede200ef2b2f7b392eeaa02df16974de2a5f021e59946bee3ed6fb · sha256:e0cd6aff3298a3e0… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.