CVE-2026-42499

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Source
https://cve.org/CVERecord?id=CVE-2026-42499
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42499.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-42499
Aliases
Downstream
Related
Published
2026-05-07T19:41:18.615Z
Modified
2026-07-12T03:55:25.499117020Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Quadratic string concatenation in consumePhrase in net/mail
Details

Pathological inputs could cause DoS through consumePhrase when parsing an email address according to RFC 5322.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42499.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "fixed": "1.25.10"
                },
                {
                    "introduced": "1.26.0-0"
                },
                {
                    "fixed": "1.26.3"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ],
    "cna_assigner": "Go"
}
References

Affected packages

Git / github.com/golang/go

Affected ranges

Type
GIT
Repo
https://github.com/golang/go
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
5053df5b6ff006dfc96df442fddddee49f5250eb
Introduced
d90b98e65320778f3b1f99a6951ab20f04d218b3
Fixed
2dc996f71b0ebafb77e64433e58333e049488a3c
Database specific 
{
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.25.10"
        },
        {
            "introduced": "1.26.0"
        },
        {
            "fixed": "1.26.3"
        }
    ],
    "cpe": "cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*"
}

Affected versions

go1.*
go1.10beta1
go1.10beta2
go1.10rc1
go1.10rc2
go1.11beta1
go1.11beta2
go1.11beta3
go1.12beta1
go1.12beta2
go1.13beta1
go1.14beta1
go1.15beta1
go1.16beta1
go1.17beta1
go1.18beta1
go1.18beta2
go1.19beta1
go1.25.0
go1.25.1
go1.25.2
go1.25.3
go1.25.4
go1.25.5
go1.25.6
go1.25.7
go1.25.8
go1.25.9
go1.25rc1
go1.25rc2
go1.25rc3
go1.26.0
go1.26.1
go1.26.2
go1.3beta1
go1.3beta2
go1.4beta1
go1.5beta1
go1.5beta2
go1.5beta3
go1.6beta1
go1.6beta2
go1.7beta1
go1.7beta2
go1.7rc1
go1.7rc2
go1.7rc3
go1.7rc4
go1.8beta1
go1.8beta2
go1.9beta1
go1.9beta2
release.*
release.r56
Other
weekly
weekly.*
weekly.2009-11-06
weekly.2009-11-10
weekly.2009-11-10.1
weekly.2009-11-12
weekly.2009-11-17
weekly.2009-12-07
weekly.2009-12-09
weekly.2009-12-22
weekly.2010-01-05
weekly.2010-01-13
weekly.2010-01-27
weekly.2010-02-04
weekly.2010-02-17
weekly.2010-02-23
weekly.2010-03-04
weekly.2010-03-15
weekly.2010-03-22
weekly.2010-03-30
weekly.2010-04-13
weekly.2010-04-27
weekly.2010-05-04
weekly.2010-05-27
weekly.2010-06-09
weekly.2010-06-21
weekly.2010-07-01
weekly.2010-07-14
weekly.2010-07-29
weekly.2010-08-04
weekly.2010-08-11
weekly.2010-08-25
weekly.2010-09-06
weekly.2010-09-15
weekly.2010-09-22
weekly.2010-09-29
weekly.2010-10-13
weekly.2010-10-13.1
weekly.2010-10-20
weekly.2010-10-27
weekly.2010-11-02
weekly.2010-11-10
weekly.2010-11-23
weekly.2010-12-02
weekly.2010-12-08
weekly.2010-12-15
weekly.2010-12-15.1
weekly.2010-12-22
weekly.2011-01-06
weekly.2011-01-12
weekly.2011-01-19
weekly.2011-01-20
weekly.2011-02-01
weekly.2011-02-01.1
weekly.2011-02-15
weekly.2011-02-24
weekly.2011-03-07
weekly.2011-03-07.1
weekly.2011-03-15
weekly.2011-03-28
weekly.2011-04-04
weekly.2011-04-13
weekly.2011-04-27
weekly.2011-05-22
weekly.2011-06-02
weekly.2011-06-09
weekly.2011-06-16
weekly.2011-06-23
weekly.2011-07-07
weekly.2011-07-19
weekly.2011-07-29
weekly.2011-08-10
weekly.2011-08-17
weekly.2011-09-01
weekly.2011-09-07
weekly.2011-09-16
weekly.2011-09-21
weekly.2011-10-06
weekly.2011-10-18
weekly.2011-10-25
weekly.2011-10-26
weekly.2011-11-01
weekly.2011-11-02
weekly.2011-11-08
weekly.2011-11-09
weekly.2011-11-18
weekly.2011-12-01
weekly.2011-12-02
weekly.2011-12-06
weekly.2011-12-14
weekly.2011-12-22
weekly.2012-01-15
weekly.2012-01-20
weekly.2012-01-27
weekly.2012-02-07
weekly.2012-02-14
weekly.2012-02-22
weekly.2012-03-04
weekly.2012-03-13
weekly.2012-03-22
weekly.2012-03-27

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42499.json"