Bug 2430538 (CVE-2026-23745)

Summary:	CVE-2026-23745 node-tar: tar: node-tar: Arbitrary file overwrite and symlink poisoning via unsanitized linkpaths in archives
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	aazores, abarbaro, abrianik, abuckta, akostadi, alcohan, alizardo, amasferr, anjoseph, anpicker, anthomas, anujha, aruklets, aschwart, asoldano, aszczucz, ataylor, bbaranow, bbrownin, bdettelb, bmaxwell, boliveir, brian.stansberry, bstansbe, carogers, caswilli, cmah, darran.lofthouse, dbosanac, dbruscin, dfreiber, dhanak, dkuc, dlofthou, dmayorov, doconnor, dosoudil, drichtar, drosa, drow, dschmidt, dsimansk, dymurray, eaguilar, ebaron, eborisov, ehelms, ehugonne, erezende, ggainey, ggrzybek, gmalinko, gparvin, haoli, hasun, hkataria, ibek, ibolton, istudens, ivassile, iweiss, jajackso, janstey, jbalunas, jburrell, jcammara, jcantril, jchui, jfula, jhe, jkoehler, jlanda, jlledo, jmatthew, jmitchel, jmontleo, jneedle, jolong, jowilson, jpasqual, jprabhak, jraez, jreimann, jrokos, juwatts, kaycoth, kegrant, kingland, koliveir, kshier, ktsao, kvanderr, kverlaen, lball, lchilton, lphiri, mabashia, manissin, mattdavi, matzew, mdessi, mhulan, mnovotny, mosmerov, mposolda, mrizzi, mstipich, msvehla, nboldt, ngough, nmoumoul, nwallace, nyancey, oaljalju, ometelka, orabin, osousa, owatkins, pahickey, pantinor, parichar, pberan, pbraun, pcattana, pcreech, pdelbell, pesilva, pgaikwad, pjindal, pmackay, psrna, ptisnovs, rchan, rekumar, rexwhite, rhaigner, rhel-process-autobot, rjohnson, rmartinc, rojacob, rstancel, rstepani, sausingh, sdawley, sfeifer, shvarugh, simaishi, slucidi, smaestri, smallamp, smcdonal, sseago, ssilvert, stcannon, sthirugn, sthorger, syedriko, tasato, teagle, tfister, thavo, thjenkin, tmalecek, tom.jenkinson, tsedmik, vdosoudi, veshanka, vkumar, vmuzikar, vvoronko, watson-tool-maintainers, wtam, xdharmai, 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 node-tar library. This vulnerability allows an attacker to craft malicious archives that, when extracted, can bypass intended security restrictions. This leads to arbitrary file overwrite and symlink poisoning, potentially allowing unauthorized modification of files on the system.	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:
Bug Depends On:	2431086, 2431108, 2431109, 2431113, 2431115, 2431116, 2431088, 2431090, 2431092, 2431094, 2431095, 2431096, 2431097, 2431098, 2431099, 2431100, 2431101, 2431102, 2431103, 2431104, 2431105, 2431106, 2431107, 2431110, 2431111, 2431112, 2431114, 2431117
Bug Blocks:

Description OSIDB Bzimport 2026-01-16 23:01:50 UTC

node-tar is a Tar for Node.js. The node-tar library (<= 7.5.2) fails to sanitize the linkpath of Link (hardlink) and SymbolicLink entries when preservePaths is false (the default secure behavior). This allows malicious archives to bypass the extraction root restriction, leading to Arbitrary File Overwrite via hardlinks and Symlink Poisoning via absolute symlink targets. This vulnerability is fixed in 7.5.3.

Comment 3 errata-xmlrpc 2026-05-19 09:02:16 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:18480 https://access.redhat.com/errata/RHSA-2026:18480

Comment 4 errata-xmlrpc 2026-05-19 13:16:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:18868 https://access.redhat.com/errata/RHSA-2026:18868