CVE-2025-22871

Aliases:GO-2025-3563BIT-golang-2025-22871GHSA-g9pc-8g42-g6vq
Advisory lineage Upstream: 0 Downstream: 111
Deferred
Published: 08 Apr 2025, 20:04
Last modified:12 May 2026, 12:04

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.1 CRITICAL
v3.1 (cve.org)
EPSS Score
0.29% LOW
0% probability +0.25%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

08 Apr 2025, 20:04
Published
Vulnerability first disclosed
12 May 2026, 12:04
Last Modified
Vulnerability information updated

Description

The net/http package improperly accepts a bare LF as a line terminator in chunked data chunk-size lines. This can permit request smuggling if a net/http server is used in conjunction with a server that incorrectly accepts a bare LF as part of a chunk-ext.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Trends

Current EPSS score: 0.29%• Percentile: 53%

Affected Systems

  • go standard library•net/http/internal

    < 1.23.8 | ≥ 1.24.0-0, < 1.24.2

  • Go•stdlib

    ≥ 1.24.0-0, < 1.24.2

References (6)