Riskcovery

CVE-2026-33814

Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net

State
Published
Severity
7.5 High
Published
May 7, 2026
Updated
Sep 18, 2026
Reserved
Mar 23, 2026

Read the record on cve.org

Description

When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCISA-ADP
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hredhat-SADP

Weaknesses

  • CWE-606 Unchecked Input for Loop Condition

Affected Products

ProductVersions
golang.org/x/net/http2golang.org/x/net
  • before 0.53.0Affected
net/httpGo standard library
  • before 1.25.10Affected
  • 1.26.0-0 to before 1.26.3Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.