Envoy: oghttp2 upstream trailers incorrect handling
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's optional oghttp2 upstream HTTP/2 codec accepts a response trailer HEADERS frame without END_STREAM. Envoy completes and deferred-deletes the ActiveRequest while oghttp2 keeps the stream open, leaving ClientStreamImpl with a dangling response_decoder_ reference. A later frame on the stream can dispatch through the freed object and crash the process. The relevant scope boundary is that the default nghttp2 codec rejects the malformed trailers, and the trigger is upstream-only with oghttp2 enabled. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
CVE-2026-73513
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-73513
envoy
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "envoyproxy",
"product": "envoy",
"versions": [
{
"status": "affected",
"version": "< 1.36.10"
},
{
"status": "affected",
"version": ">= 1.37.0, < 1.37.6"
},
{
"status": "affected",
"version": ">= 1.38.0, < 1.38.4"
},
{
"status": "affected",
"version": ">= 1.39.0, < 1.39.1"
}
]
}
]- Related CVEs
- CVE-2026-73513
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #3342 · Revision 1
- Added to Heist Feed
- Publisher date