Vulnerability in Envoyproxy Envoy
CVE-2026-48042
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (44.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Envoyproxy Envoy — versions >= 1.38.0, < 1.38.1, >= 1.37.0, < 1.37.3, >= 1.36.0, < 1.36.7
Weakness classification (CWE)
References
- github.com/envoyproxy/envoy/security/advisories/GHSA-f24p-rxw2-g6pv (Exploit, Vendor Advisory)
- github.com/envoyproxy/envoy/blob/099a9d71ebfd8aa9f823e1738b34138cb634a07b/sourc… (Product)
Frequently asked questions
- What is CVE-2026-48042?
- CVE-2026-48042 is a high-severity vulnerability in Envoyproxy Envoy, classified under CWE-1124. CVSS score: 7.5/10. Published 2026-06-26.
- How severe is CVE-2026-48042?
- High severity. CVSS v3 base score is 7.5 out of 10.