Bug 2508406 (CVE-2026-67213)

Summary: CVE-2026-67213 nanoid: nanoid: Denial of Service via infinite loop in random ID generation
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: abarbaro, akhatavk, akostadi, alizardo, amasferr, anjoseph, anpicker, anthomas, anujha, aos-team-art-private, aruklets, aschwart, asdas, asoldano, aszczucz, ataylor, bbaranow, bbrownin, bmaxwell, boliveir, bparees, brasmith, bstansbe, cdrage, cmyers, cochase, dbruscin, dlofthou, dmayorov, dnakabaa, doconnor, dpaolell, dranck, drichtar, dschmidt, dymurray, eborisov, ehelms, ehugonne, ewittman, fmariani, ggainey, gmalinko, gotiwari, gparvin, hasun, ibolton, istudens, ivassile, iweiss, janstey, jchui, jdelft, jfula, jhe, jhorak, jlanda, jlledo, jmatthew, jmontleo, jowilson, jpasqual, jprabhak, jupierce, juwatts, jwong, jwon, kaycoth, kshier, ktsao, kvanderr, lball, lchilton, lcouzens, lgarciaa, mbiarnes, mcarlett, mdellweg, mhulan, mosmerov, mposolda, msvehla, mvyas, nboldt, ngough, nipatil, nmoumoul, nwallace, nyancey, oaljalju, omaciel, ometelka, osousa, pantinor, pberan, pcreech, pesilva, pgaikwad, pjindal, pmackay, ppalepu, ppostler, prdhamdh, prwatson, psrna, ptisnovs, rchan, rhaigner, rhel-process-autobot, rjohnson, rkubis, rmartinc, rstancel, rstepani, rushinde, sdawley, sfeifer, sghai, sidsharm, simaishi, slucidi, smallamp, sseago, ssilvert, stcannon, sthorger, suppawar, syedriko, tcunning, teagle, thjenkin, tmalecek, tsedmik, ttakamiy, vdosoudi, veshanka, vlaad, vmuzikar, watson-tool-maintainers, wtam, xdharmai, yfang, yguenane
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in nanoid (Nano ID), a small, secure, and URL-friendly unique string ID generator. An attacker could exploit this vulnerability by providing a zero-size input to the customAlphabet or customRandom functions. This would cause an infinite loop, leading to a denial of service (DoS) condition by hanging the application's calling thread.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2522002, 2522003, 2522007, 2522008, 2522010, 2522011, 2522012, 2522013, 2522014, 2522015, 2522016, 2522017, 2522018, 2522021, 2522024, 2522025, 2522026, 2522031, 2522032, 2522033, 2522034, 2522035, 2522036, 2522037, 2522038, 2522039, 2522040, 2522041, 2522004, 2522006, 2522009, 2522019, 2522020, 2522022, 2522023, 2522027, 2522028, 2522029, 2522030    
Bug Blocks:    

Description OSIDB Bzimport 2026-07-29 14:01:32 UTC 
nanoid (Nano ID) before 5.1.6 contains an infinite loop in the customAlphabet and customRandom functions. When these functions are configured with a size of 0, the internal generation loop never satisfies its exit condition and spins indefinitely, hanging the calling thread. An application that passes an unvalidated, attacker-controlled size of 0 to these functions is exposed to a denial-of-service condition.