Bug 2531982 (CVE-2026-89090)

Summary: CVE-2026-89090 github.com/aws/aws-sdk-go-v2: Amazon AWS SDK for Go v2: Denial of Service via crafted event stream header
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, abarbaro, agarcial, akhatavk, akoudelk, alebedev, alinfoot, alizardo, amctagga, anjoseph, anpicker, anthomas, aoconnor, aos-team-art-private, aruklets, asdas, asegurap, asyoung, bniver, bparees, cahl, chfoley, ckandaga, cmah, crizzo, dfreiber, dhanak, dkeler, doconnor, dpaolell, drosa, drow, dsimansk, dtrifiro, dymurray, eaguilar, ebaron, eborisov, eglynn, ehelms, flucifre, gbenhaim, ggainey, gmeno, gparvin, groman, gtanzill, hasun, jbalunas, jburrell, jbuscemi, jcantril, jchui, jdelft, jdobes, jeder, jfula, jhe, jhollowa, jjoyce, jmatsuok, jmatthew, jowilson, jpasqual, jprabhak, jpretori, jsamir, jschluet, jsherril, jtolenti, jturenov, jupierce, juwatts, kaycoth, kbempah, kingland, kshier, ktsao, lball, lbragsta, lchilton, lgarciaa, lhh, ljawale, mbenjamin, mbiarnes, mburns, mdellweg, mgarciac, mhackett, mhulan, mnovotny, msilmser, mwringe, nboldt, ngough, niyer, nmoumoul, nyancey, oaljalju, ometelka, orabin, osousa, pakotvan, pcreech, pjindal, ppalepu, ppostler, prdhamdh, prichard, psrna, ptisnovs, pvasanth, rchan, rekumar, rhaigner, rhel-process-autobot, rjohnson, rojacob, sausingh, sdawley, sfeifer, sghai, sidsharm, smallamp, solenoci, sostapov, stcannon, sthirugn, suppawar, swoodman, syedriko, teagle, thason, tmalecek, tsze, twaugh, vereddy, veshanka, vkarehfa, vkumar, vlaad, vvoronko, watson-tool-maintainers, weaton, wenshen, whayutin, 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 event stream header decoder of the Amazon AWS SDK for Go v2. An unauthenticated remote attacker could exploit this vulnerability by sending a specially crafted event stream response frame. This frame, containing a header value type outside the valid range, would cause an unrecovered panic, leading to the termination of the consuming application process and resulting in a Denial of Service (DoS).
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Clone Of: Environment:
Last Closed: Type: ---
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Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2533065, 2533074, 2533075, 2533076, 2533078, 2533080, 2533082, 2533083, 2533087, 2533090, 2533091, 2533092, 2533093, 2533096, 2533098, 2533064, 2533068, 2533070, 2533071, 2533073, 2533077, 2533079, 2533084, 2533085, 2533086, 2533088, 2533089, 2533094, 2533095, 2533097    
Bug Blocks:    

Description OSIDB Bzimport 2026-09-11 17:34:48 UTC
An unrecovered panic in the event stream header decoder in Amazon AWS SDK for Go v2 before release-2026-03-23 might allow an unauthenticated remote actor to terminate the consuming application process via a crafted event stream response frame containing a header value type outside the valid range.



To remediate this issue, users should upgrade to release-2026-03-23 or later, and patch any forked or derivative code.