CVE-2025-64702— quic-go HTTP/3 QPACK Header Expansion DoS
Quick assessment
Affected
quic-go quic-go
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
quic-go是Lucas Clemente个人开发者的一种 QUIC 协议、RFC 9000协议在 Go 中的实现。 quic-go 0.56.0及之前版本存在安全漏洞，该漏洞源于未对解码后的标头实施限制，可能导致内存耗尽。
Possible ATT&CK Techniques 1 AI
T1496 · Resource Hijacking
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2025-64702
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
quic-go HTTP/3 QPACK Header Expansion DoS
Source: CVE Program / CVE List V5
Vulnerability Description
quic-go is an implementation of the QUIC protocol in Go. Versions 0.56.0 and below are vulnerable to excessive memory allocation through quic-go's HTTP/3 client and server implementations by sending a QPACK-encoded HEADERS frame that decodes into a large header field section (many unique header names and/or large values). The implementation builds an http.Header (used on the http.Request and http.Response, respectively), while only enforcing limits on the size of the (QPACK-compressed) HEADERS frame, but not on the decoded header, leading to memory exhaustion. This issue is fixed in version 0.57.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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
quic-go 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
quic-go是Lucas Clemente个人开发者的一种 QUIC 协议、RFC 9000协议在 Go 中的实现。 quic-go 0.56.0及之前版本存在安全漏洞，该漏洞源于未对解码后的标头实施限制，可能导致内存耗尽。
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
II. Public POCs for CVE-2025-64702
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2025-64702
请登录查看更多情报信息。
Patches & Fixes for CVE-2025-64702 (1)
Vendor Advisories for CVE-2025-64702 (1)
-
https://github.com/quic-go/quic-go/security/advisories/GHSA-g754-hx8w-x2g6 x_refsource_CONFIRM
IV. Related Vulnerabilities
Same product: quic-go
-
CVE-2026-40898
quic-go: HTTP/3 QPACK Trailer Expansion Memory Exhaustion -
CVE-2025-59530
quic-go has Client Crash Due to Premature HANDSHAKE_DONE Fra -
CVE-2025-29785
quic-go Has Panic in Path Probe Loss Recovery Handling -
CVE-2024-53259
quic-go affected by an ICMP Packet Too Large Injection Attac -
CVE-2024-22189
QUIC's Connection ID Mechanism vulnerable to Memory Exhausti
Same vendor: quic-go
-
CVE-2026-57497
webtransport-go: Memory Exhaustion Attack due to Buffering o -
CVE-2026-40898
quic-go: HTTP/3 QPACK Trailer Expansion Memory Exhaustion -
CVE-2026-21438
webtransport-go affected by a Memory Exhaustion Attack due t -
CVE-2026-21435
webtransport-go CloseWithError can block indefinitely -
CVE-2026-21434
webtransport-go affected by Memory Exhaustion Attack due to
Same weakness: CWE-770
-
CVE-2026-115398
Ghidra before 12.2 Denial of Service via TAR and ZIP File Sy -
CVE-2026-115397
Ghidra before 12.2 Denial of Service via Extension Archive I -
CVE-2026-115395
Ghidra 10.3 before 12.2 Denial of Service via ThemeReader.re -
CVE-2026-115391
Wasmtime 46.0.0 before 46.0.3 and 47.0.0 before 47.0.4 Unbou -
CVE-2026-115389
Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 be
V. Comments for CVE-2025-64702
No comments yet