Bug 2460297 (CVE-2026-40895)

Summary:	CVE-2026-40895 follow-redirects: follow-redirects: Information disclosure via cross-domain redirects
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, amctagga, anjoseph, anpicker, anthomas, anujha, aoconnor, asoldano, bbaranow, bbrownin, bdettelb, bmaxwell, bniver, brasmith, bstansbe, caswilli, cdrage, chfoley, cmah, cmyers, cochase, dbosanac, dfreiber, dhanak, dkeler, dkuc, dlofthou, dmayorov, dnakabaa, doconnor, dranck, drosa, drow, dschmidt, dymurray, eaguilar, ebaron, eborisov, ehelms, erezende, ewittman, fdeutsch, flucifre, ggainey, ggrzybek, gmalinko, gmeno, gparvin, groman, hasun, ibek, ibolton, istudens, ivassile, iweiss, janstey, jbalunas, jburrell, jchui, jfula, jhe, jkoehler, jlanda, jlledo, jmatthew, jmontleo, jolong, jowilson, jpasqual, jprabhak, jraez, jreimann, jrokos, juwatts, jwong, kaycoth, kbempah, kshier, ktsao, lball, lchilton, lcouzens, lphiri, manissin, mbenjamin, mdessi, mhackett, mhess, mhulan, mnovotny, mosmerov, mrizzi, msvehla, mwringe, nboldt, ngough, nipatil, nmoumoul, nwallace, nyancey, oaljalju, omaciel, ometelka, orabin, oramraz, osousa, pahickey, pantinor, parichar, pberan, pcattana, pcreech, pdelbell, pesilva, pgaikwad, pjindal, pmackay, prwatson, psrna, ptisnovs, rchan, rgodfrey, rhaigner, rhel-process-autobot, rjohnson, rkubis, rstancel, rstepani, rushinde, sausingh, sdawley, sdoran, sfeifer, simaishi, slucidi, smaestri, smallamp, smcdonal, smullick, solenoci, sostapov, sseago, stcannon, stirabos, suppawar, swoodman, syedriko, tasato, teagle, thason, thjenkin, tmalecek, tsedmik, ttakamiy, vdosoudi, vereddy, veshanka, vkumar, vle, vwilson, 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 follow-redirects. When an HTTP request follows a cross-domain redirect (a redirection to a different domain), custom authentication headers, such as X-API-Key or X-Auth-Token, are not properly stripped. This allows these sensitive headers to be forwarded verbatim to the redirect target, potentially leading to the unintended disclosure of authentication information to an untrusted third party.	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 2026-04-21 21:02:56 UTC

follow-redirects is an open source, drop-in replacement for Node's `http` and `https` modules that automatically follows redirects. Prior to 1.16.0, when an HTTP request follows a cross-domain redirect (301/302/307/308), follow-redirects only strips authorization, proxy-authorization, and cookie headers (matched by regex at index.js). Any custom authentication header (e.g., X-API-Key, X-Auth-Token, Api-Key, Token) is forwarded verbatim to the redirect target. This vulnerability is fixed in 1.16.0.

Comment 2 errata-xmlrpc 2026-05-26 03:54:41 UTC

This issue has been addressed in the following products:

  Cryostat 4 on RHEL 9

Via RHSA-2026:17789 https://access.redhat.com/errata/RHSA-2026:17789