Bug 2436942 (CVE-2026-25547)

Summary:	CVE-2026-25547 brace-expansion: brace-expansion: Denial of Service via unbounded brace range expansion
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aazores, abrianik, abuckta, akostadi, alcohan, amasferr, aschwart, asoldano, ataylor, bbaranow, bdettelb, bmaxwell, boliveir, brian.stansberry, bsmejkal, caswilli, chfoley, cmah, darran.lofthouse, dbruscin, dfreiber, dhanak, dkuc, dmayorov, doconnor, dosoudil, drosa, drow, dschmidt, eaguilar, ebaron, erezende, eric.wittmann, ggrzybek, gmalinko, gparvin, ibek, istudens, ivassile, iweiss, jachapma, janstey, jbalunas, jburrell, jcantril, jlanda, jlledo, jolong, jrokos, jscholz, kaycoth, kshier, kvanderr, kverlaen, lchilton, manissin, mattdavi, mnovotny, mosmerov, mposolda, mstipich, msvehla, nipatil, nwallace, orabin, pahickey, pantinor, parichar, pberan, pbizzarr, pdelbell, pesilva, pjindal, pmackay, progier, rexwhite, rhaigner, rjohnson, rkubis, rmartinc, rojacob, rstancel, rstepani, sausingh, sfeifer, simaishi, smaestri, smcdonal, snegrini, spichugi, ssidhaye, ssilvert, stcannon, sthirugn, sthorger, swoodman, tasato, tbordaz, teagle, tom.jenkinson, tsedmik, vashirov, vkumar, vmuzikar, 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 brace-expansion component. This denial of service (DoS) vulnerability allows a remote attacker to provide specially crafted input containing repeated numeric brace ranges. This input causes the library to attempt an unbounded expansion, consuming excessive CPU and memory resources. This can lead to a system crash, impacting the availability of the service.	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 2026-02-04 22:01:35 UTC

@isaacs/brace-expansion is a hybrid CJS/ESM TypeScript fork of brace-expansion. Prior to version 5.0.1, @isaacs/brace-expansion is vulnerable to a denial of service (DoS) issue caused by unbounded brace range expansion. When an attacker provides a pattern containing repeated numeric brace ranges, the library attempts to eagerly generate every possible combination synchronously. Because the expansion grows exponentially, even a small input can consume excessive CPU and memory and may crash the Node.js process. This issue has been patched in version 5.0.1.

Comment 3 errata-xmlrpc 2026-04-08 13:54:14 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:7080 https://access.redhat.com/errata/RHSA-2026:7080

Comment 4 errata-xmlrpc 2026-04-08 18:04:28 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:7123 https://access.redhat.com/errata/RHSA-2026:7123

Comment 5 errata-xmlrpc 2026-04-09 12:47:32 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:7302 https://access.redhat.com/errata/RHSA-2026:7302

Comment 6 errata-xmlrpc 2026-04-09 20:20:08 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:7350 https://access.redhat.com/errata/RHSA-2026:7350

Comment 9 errata-xmlrpc 2026-04-13 02:22:39 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:7675 https://access.redhat.com/errata/RHSA-2026:7675

Comment 11 errata-xmlrpc 2026-04-14 06:51:42 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:7983 https://access.redhat.com/errata/RHSA-2026:7983