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Vulnerability · Published Apr 16, 2026 · Assigned by GitHub_M

CVE-2026-35469SpdyStream: DOS on CRI

Medium 6.5

In plain English

A medium-severity resource allocation without limits in spdystream from moby. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.7%top 48.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

spdystream is a Go library for multiplexing streams over SPDY connections. In versions 0.5.0 and below, the SPDY/3 frame parser does not validate attacker-controlled counts and lengths before allocating memory. Three allocation paths are affected: the SETTINGS frame entry count, the header count in parseHeaderValueBlock, and individual header field sizes — all read as 32-bit integers and used directly as allocation sizes with no bounds checking. Because SPDY header blocks are zlib-compressed, a small on-the-wire payload can decompress into large attacker-controlled values. A remote peer that can send SPDY frames to a service using spdystream can exhaust process memory and cause an out-of-memory crash with a single crafted control frame. This issue has been fixed in version 0.5.1.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.24containerd2.2.3-r0ALPINE-CVE-2026-35469
Debian:12golang-github-docker-spdystreamno fix listedDEBIAN-CVE-2026-35469
Debian:13golang-github-docker-spdystreamno fix listedDEBIAN-CVE-2026-35469
Debian:14golang-github-docker-spdystreamno fix listedDEBIAN-CVE-2026-35469
Gogithub.com/moby/spdystream0.5.1GO-2026-4958
Gogithub.com/moby/spdystream0.5.1GHSA-pc3f-x583-g7j2
Ubuntu:22.04:LTSgolang-github-docker-spdystreamno fix listedUBUNTU-CVE-2026-35469
Ubuntu:24.04:LTSgolang-github-docker-spdystreamno fix listedUBUNTU-CVE-2026-35469
Ubuntu:25.10golang-github-docker-spdystreamno fix listedUBUNTU-CVE-2026-35469
Ubuntu:26.04:LTSgolang-github-docker-spdystreamno fix listedUBUNTU-CVE-2026-35469
Ubuntu:26.10golang-github-docker-spdystreamno fix listedUBUNTU-CVE-2026-35469

Affected products (as reported)

VendorProductVersions
moby spdystream < 0.5.1

Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References