synced 11 MIN AGO
01 Record

CVE-2021-31525

net/http in Go before 1.15.12 and 1.16.x before 1.16.4 allows remote attackers to cause a denial of service (panic) via a large header to ReadRequest or ReadResponse. Server, Transport, and Client can

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector

02 Description

net/http in Go before 1.15.12 and 1.16.x before 1.16.4 allows remote attackers to cause a denial of service (panic) via a large header to ReadRequest or ReadResponse. Server, Transport, and Client can

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
3.69% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 89.2% of scored records. A rank, not a probability.
NVD base score
5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-05-27 12:17Z5 YR AGO
Last updated
2024-08-03 23:03Z2 YR AGO
Reserved
2021-04-21
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-674Uncontrolled RecursionClass
  • CWE-770Allocation of Resources Without Limits or ThrottlingBase
Data version
5.1
Document digest
5bde1777641779f5b247177e33f1e7be0ef0404ea84de777f2238b7b37890b6b

05 Affected products

VendorProductVersionsPlatforms
fedoraprojectfedoraNot specified—
golanggoNot specified—
redhatadvanced_cluster_securityNot specified—
redhatassisted_installerNot specified—
redhatceph_storageNot specified—
redhatcontainer_native_virtualizationNot specified—
redhatenterprise_linuxNot specified—
redhatjaegerNot specified—
redhatopenshiftNot specified—
redhatopenshift_container_storageNot specified—
redhatopenstackNot specified—
redhatrhmtNot specified—
redhatserverlessNot specified—
redhatservice_meshNot specified—
redhatstorageNot specified—

06 References

07 Fixed in

Arch Linux

  • go
    Fixed in 2:1.16.4-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

Debian 12

  • golang-golang-x-net
    Fixed in 1:0.0+git20210119.5f4716e+dfsg-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • golang-golang-x-net
    Fixed in 1:0.0+git20210119.5f4716e+dfsg-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • golang-golang-x-net
    Fixed in 1:0.0+git20210119.5f4716e+dfsg-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • golang-golang-x-net-dev
    No fix yet
  • google-guest-agent
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • golang-1.16
    No fix yet
  • golang-golang-x-net-dev
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • golang-1.16
    No fix yet
  • golang-golang-x-net-dev
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.