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CVE-2026-35469— SpdyStream: DOS on CRI

Quick assessment

Affected
moby spdystream
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SpdyStream是Moby开源的一个基于SPDY协议的多路复用流处理库。 SpdyStream 0.5.0及之前版本存在安全漏洞，该漏洞源于SPDY/3帧解析器在分配内存前未验证攻击者控制的计数和长度，可能导致远程攻击者通过特制控制帧耗尽进程内存并引发内存不足崩溃。

CVSS 8.7 · High EPSS 0.79% · P55

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
moby spdystream < 0.5.1 affected
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I. Basic Information for CVE-2026-35469

Vulnerability Information
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Vulnerability Title
SpdyStream: DOS on CRI
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
SpdyStream 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SpdyStream是Moby开源的一个基于SPDY协议的多路复用流处理库。 SpdyStream 0.5.0及之前版本存在安全漏洞，该漏洞源于SPDY/3帧解析器在分配内存前未验证攻击者控制的计数和长度，可能导致远程攻击者通过特制控制帧耗尽进程内存并引发内存不足崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
moby spdystream < 0.5.1 -

II. Public POCs for CVE-2026-35469

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 10258 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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Trigger conditions & impact
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Exploit chain & mitigation
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III. Intelligence Information for CVE-2026-35469

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Vendor Advisories for CVE-2026-35469 (1)

IV. Related Vulnerabilities

Same vendor: moby
Same weakness: CWE-770

V. Comments for CVE-2026-35469

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