Bug 2467820 (CVE-2026-39820)

Summary: CVE-2026-39820 net/mail: golang: Go net/mail: Denial of Service via crafted email inputs
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: aazores, abarbaro, akhatavk, akoudelk, alcohan, alizardo, amctagga, anjoseph, anpicker, ansmith, anthomas, aoconnor, aos-team-art-private, aruklets, asdas, bbrownin, bdettelb, bniver, ckandaga, cmah, crizzo, dakwon, dhanak, dkeler, doconnor, dpaolell, drosa, dschmidt, dsimansk, dymurray, eaguilar, ebaron, eborisov, eglynn, ehelms, erezende, fdeutsch, flucifre, gbenhaim, ggainey, gmeno, gparvin, groman, hasun, ibolton, jbalunas, jbritton, jcantril, jchui, jdelft, jfula, jhe, jjoyce, jkoehler, jlanda, jmatsuok, jmatthew, jmontleo, jolong, jowilson, jpasqual, jprabhak, jpretori, jschluet, jtolenti, jupierce, juwatts, kingland, kshier, ktsao, kverlaen, lball, lbragsta, lchilton, lgamliel, lgarciaa, lhh, lphiri, lwan, manissin, mbenjamin, mbiarnes, mburns, mdellweg, mgarciac, mhackett, mhess, mhulan, mnovotny, mwringe, nboldt, ngough, niyer, nmoumoul, nyancey, oaljalju, ometelka, oramraz, osousa, pahickey, pcreech, peholase, pgaikwad, pjindal, ppalepu, ppostler, prdhamdh, psrna, ptisnovs, pvasanth, rchan, rekumar, rfreiman, rhaigner, rhel-process-autobot, rjohnson, rojacob, sakbas, sausingh, sbratsla, sdawley, sfeifer, sghai, sidsharm, simaishi, slucidi, smallamp, smcdonal, smullick, sostapov, sseago, stcannon, stirabos, suppawar, syedriko, teagle, thason, tmalecek, twaugh, tzivkovi, vereddy, veshanka, vlaad, vle, vvoronko, vwilson, watson-tool-maintainers, wenshen, whayutin, wtam, xdharmai, xiyuan, yguenane
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in the `net/mail` package of the Go programming language. An attacker could provide specially crafted inputs to the `ParseAddress`, `ParseAddressList`, or `ParseDate` functions. This could lead to excessive consumption of CPU and memory resources, resulting in a Denial of Service (DoS) for applications processing these inputs.
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-05-07 20:01:51 UTC
Well-crafted inputs reaching ParseAddress, ParseAddressList, and ParseDate were able to trigger excessive CPU exhaustion and memory allocations.

Comment 2 errata-xmlrpc 2026-06-01 00:43:55 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:22120 https://access.redhat.com/errata/RHSA-2026:22120

Comment 3 errata-xmlrpc 2026-06-01 01:00:38 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:22121 https://access.redhat.com/errata/RHSA-2026:22121

Comment 4 errata-xmlrpc 2026-06-01 01:04:26 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:22112 https://access.redhat.com/errata/RHSA-2026:22112

Comment 5 errata-xmlrpc 2026-08-03 15:59:15 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:49702 https://access.redhat.com/errata/RHSA-2026:49702

Comment 6 errata-xmlrpc 2026-08-03 17:33:47 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:49712 https://access.redhat.com/errata/RHSA-2026:49712

Comment 8 errata-xmlrpc 2026-08-19 13:42:13 UTC
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.19

Via RHSA-2026:54883 https://access.redhat.com/errata/RHSA-2026:54883

Comment 9 errata-xmlrpc 2026-08-19 15:34:48 UTC
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.19

Via RHSA-2026:54552 https://access.redhat.com/errata/RHSA-2026:54552

Comment 10 errata-xmlrpc 2026-08-20 18:48:14 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:57649 https://access.redhat.com/errata/RHSA-2026:57649

Comment 11 errata-xmlrpc 2026-08-26 00:20:59 UTC
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.16

Via RHSA-2026:57845 https://access.redhat.com/errata/RHSA-2026:57845

Comment 12 errata-xmlrpc 2026-08-26 10:47:48 UTC
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.18

Via RHSA-2026:57914 https://access.redhat.com/errata/RHSA-2026:57914

Comment 13 errata-xmlrpc 2026-08-26 15:16:05 UTC
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.18

Via RHSA-2026:57482 https://access.redhat.com/errata/RHSA-2026:57482

Comment 14 errata-xmlrpc 2026-08-26 15:17:58 UTC
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.16

Via RHSA-2026:56852 https://access.redhat.com/errata/RHSA-2026:56852

Comment 15 errata-xmlrpc 2026-08-26 15:27:09 UTC
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.19

Via RHSA-2026:57401 https://access.redhat.com/errata/RHSA-2026:57401

Comment 16 errata-xmlrpc 2026-08-31 04:07:21 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:61253 https://access.redhat.com/errata/RHSA-2026:61253

Comment 17 errata-xmlrpc 2026-09-02 06:46:05 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:62407 https://access.redhat.com/errata/RHSA-2026:62407

Comment 18 errata-xmlrpc 2026-09-02 07:10:02 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:62406 https://access.redhat.com/errata/RHSA-2026:62406

Comment 19 errata-xmlrpc 2026-09-02 16:39:19 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:62754 https://access.redhat.com/errata/RHSA-2026:62754

Comment 20 errata-xmlrpc 2026-09-02 16:55:43 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:62753 https://access.redhat.com/errata/RHSA-2026:62753

Comment 21 errata-xmlrpc 2026-09-02 19:13:25 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:62803 https://access.redhat.com/errata/RHSA-2026:62803

Comment 22 errata-xmlrpc 2026-09-03 05:31:16 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:63022 https://access.redhat.com/errata/RHSA-2026:63022

Comment 23 errata-xmlrpc 2026-09-03 09:05:36 UTC
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.17

Via RHSA-2026:60018 https://access.redhat.com/errata/RHSA-2026:60018

Comment 24 errata-xmlrpc 2026-09-03 12:17:02 UTC
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.12

Via RHSA-2026:59830 https://access.redhat.com/errata/RHSA-2026:59830