Bug 2437209 (CVE-2025-68458)

Summary: CVE-2025-68458 webpack: webpack buildHttp: allowedUris allow-list bypass via URL userinfo (@) leading to build-time SSRF behavior
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: aazores, abarbaro, abrianik, adudiak, akostadi, alcohan, alizardo, amasferr, anjoseph, anpicker, anthomas, asoldano, bbaranow, bbrownin, bdettelb, bmaxwell, bparees, brian.stansberry, caswilli, chfoley, cmah, darran.lofthouse, dhanak, dmayorov, doconnor, dosoudil, drosa, dschmidt, eaguilar, ebaron, ehelms, erezende, eric.wittmann, ggainey, ggrzybek, gmalinko, gparvin, hasun, ibek, istudens, ivassile, iweiss, janstey, jbalunas, jcantril, jchui, jfula, jhe, jkoehler, jlledo, jolong, jowilson, jprabhak, jrokos, jscholz, juwatts, jwong, kaycoth, kshier, ktsao, kverlaen, lball, lchilton, lphiri, manissin, mattdavi, mhulan, mnovotny, mosmerov, msvehla, nboldt, ngough, nipatil, nmoumoul, nwallace, nyancey, omaciel, ometelka, osousa, pahickey, pantinor, parichar, pberan, pbizzarr, pcreech, pdelbell, pesilva, pjindal, pmackay, psrna, ptisnovs, rchan, rhaigner, rkubis, rojacob, rstancel, rstepani, sausingh, sdawley, sfeifer, smaestri, smallamp, smcdonal, stcannon, swoodman, syedriko, tasato, teagle, tmalecek, tom.jenkinson, tsedmik, ttakamiy, veshanka, wtam, xdharmai, yguenane
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: ---
Doc Text:
An SSRF flaw has been discovered in Webpack. When experiments.buildHttp is enabled, webpack’s HTTP(S) resolver (HttpUriPlugin) can be bypassed to fetch resources from hosts outside allowedUris by using crafted URLs that include userinfo (username:password@host). If allowedUris enforcement relies on a raw string prefix check (e.g., uri.startsWith(allowed)), a URL that looks allow-listed can pass validation while the actual network request is sent to a different authority/host after URL parsing. This is a policy/allow-list bypass that enables build-time SSRF behavior (outbound requests from the build machine to internal-only endpoints, depending on network access) and untrusted content inclusion (the fetched response is treated as module source and bundled).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2437330, 2437331, 2437333, 2437337, 2437339, 2437341, 2437343, 2437345, 2437349, 2437351, 2437355, 2437357, 2437359, 2437361, 2437363, 2437365, 2437367, 2437369, 2437373, 2437379, 2437381, 2437383, 2437385, 2437387, 2437389, 2437391, 2437393, 2437397, 2437399, 2437332, 2437334, 2437335, 2437347, 2437353, 2437371, 2437375, 2437377, 2437395, 2437401, 2437403    
Bug Blocks:    

Description OSIDB Bzimport 2026-02-06 00:01:23 UTC 
Webpack is a module bundler. From version 5.49.0 to before 5.104.1, when experiments.buildHttp is enabled, webpack’s HTTP(S) resolver (HttpUriPlugin) can be bypassed to fetch resources from hosts outside allowedUris by using crafted URLs that include userinfo (username:password@host). If allowedUris enforcement relies on a raw string prefix check (e.g., uri.startsWith(allowed)), a URL that looks allow-listed can pass validation while the actual network request is sent to a different authority/host after URL parsing. This is a policy/allow-list bypass that enables build-time SSRF behavior (outbound requests from the build machine to internal-only endpoints, depending on network access) and untrusted content inclusion (the fetched response is treated as module source and bundled). This issue has been patched in version 5.104.1.