Bug 2453284 (CVE-2026-34043)

Summary: CVE-2026-34043 serialize-javascript: serialize-javascript: Denial of Service via specially crafted array-like object serialization
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: aazores, abrianik, adudiak, akostadi, alcohan, amasferr, anjoseph, anthomas, aschwart, asoldano, ataylor, bbaranow, bdettelb, bmaxwell, boliveir, bstansbe, caswilli, chfoley, cmah, dbruscin, dhanak, dlofthou, dmayorov, doconnor, drosa, dschmidt, eaguilar, ebaron, ehelms, erezende, ewittman, fdeutsch, ggainey, ggrzybek, gmalinko, gparvin, ibek, istudens, ivassile, iweiss, janstey, jbalunas, jlanda, jlledo, jolong, jprabhak, jrokos, juwatts, jwong, kaycoth, kshier, kvanderr, lchilton, manissin, mhulan, mnovotny, mosmerov, mposolda, msvehla, nipatil, nmoumoul, nwallace, omaciel, oramraz, osousa, pahickey, pantinor, parichar, pberan, pcreech, pdelbell, pesilva, pjindal, pmackay, rchan, rgodfrey, rhaigner, rkubis, rmartinc, rstancel, rstepani, sausingh, sfeifer, simaishi, smaestri, smallamp, smcdonal, smullick, ssilvert, stcannon, sthorger, stirabos, swoodman, tasato, teagle, thason, thjenkin, tmalecek, tsedmik, ttakamiy, vdosoudi, vmuzikar, wtam, yguenane
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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A flaw was found in serialize-javascript. An attacker can exploit this vulnerability by providing a specially crafted "array-like" object with an excessively large length property during the serialization process. This action causes the application to enter an intensive loop, leading to 100% CPU consumption and an indefinite hang. The primary consequence is a Denial of Service (DoS), making the affected system unresponsive.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2453938, 2453939, 2453940, 2453941, 2453942, 2453943, 2453944, 2453945, 2453946, 2453947, 2453948, 2453949, 2453950    
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Description OSIDB Bzimport 2026-03-31 03:02:30 UTC
Serialize JavaScript to a superset of JSON that includes regular expressions and functions. Prior to version 7.0.5, there is a Denial of Service (DoS) vulnerability caused by CPU exhaustion. When serializing a specially crafted "array-like" object (an object that inherits from Array.prototype but has a very large length property), the process enters an intensive loop that consumes 100% CPU and hangs indefinitely. This issue has been patched in version 7.0.5.