Bug 2484124 (CVE-2026-33245)

Summary: CVE-2026-33245 react-router: React Router: Cross-Site Scripting vulnerability via untrusted React Server Component redirects
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: aazores, abarbaro, abokovoy, abrianik, adudiak, alcohan, alizardo, amctagga, anjoseph, anpicker, anthomas, anujha, aoconnor, aruklets, aschwart, asoldano, aszczucz, ataylor, bbaranow, bdettelb, bmaxwell, bniver, boliveir, bparees, brasmith, bstansbe, cdrage, cmah, cmyers, cochase, dbosanac, dbruscin, dhanak, dhanina, dkeler, dlofthou, dnakabaa, doconnor, dranck, drichtar, drosa, dschmidt, dymurray, eaguilar, ebaron, eborisov, ehelms, ehugonne, erezende, ewittman, fdeutsch, flucifre, fmariani, frenaud, ftrivino, ggainey, ggrzybek, gmalinko, gmeno, gotiwari, gparvin, groman, hasun, ibek, ibolton, istudens, ivassile, iweiss, janstey, jbalunas, jchui, jfula, jgrulich, jhe, jhorak, jkoehler, jlanda, jmatthew, jmontleo, jolong, jowilson, jpasqual, jprabhak, jraez, jreimann, jrokos, juwatts, jwong, jwon, kaycoth, kbempah, kshier, ktsao, kvanderr, lball, lchilton, lcouzens, lphiri, manissin, mbenjamin, mcarlett, mdessi, mhackett, mhess, mhulan, mnovotny, mosmerov, mposolda, mrizzi, msvehla, mvyas, mwringe, nboldt, ngough, nipatil, nmoumoul, nwallace, nyancey, oaljalju, omaciel, ometelka, oramraz, osousa, pahickey, pantinor, parichar, pberan, pcattana, pcreech, pdelbell, pesilva, pgaikwad, pjindal, pmackay, prwatson, psrna, ptisnovs, rchan, rhaigner, rhel-process-autobot, rjohnson, rkubis, rmartinc, rstancel, rstepani, rushinde, sausingh, sdawley, sdoran, sfeifer, simaishi, slucidi, smaestri, smallamp, smcdonal, smullick, solenoci, sostapov, sseago, ssilvert, stcannon, sthorger, stirabos, suppawar, syedriko, tasato, tcunning, teagle, thason, thjenkin, tmalecek, tpopela, vdosoudi, vereddy, veshanka, vle, vmuzikar, vwilson, watson-tool-maintainers, wtam, xdharmai, yfang, yguenane
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in React Router. This vulnerability, a type of Cross-Site Scripting (XSS), affects applications utilizing React Router's unstable React Server Components (RSC) APIs. A remote attacker could exploit this by sending untrusted redirects, leading to the execution of malicious scripts in the client's browser. This could result in information disclosure or unauthorized actions.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-06-02 20:02:57 UTC
React Router is a router for React. In versions 7.7.0 through 7.13.1, when using React Router's unstable React Server Components (RSC) APIs, there is a potential client-side Cross-Site Scripting (XSS) vulnerability in the RSC redirect handling if redirects come from untrusted sources. This does not impact applications that are not using the unstable RSC APIs in React Router. This is patched in version 7.13.2.

Comment 2 David Hanina 2026-06-03 06:50:14 UTC
As FreeIPA goes, we can safely waive this one, as we do not use server-side rendering and it's server components.