Bug 2455470 (CVE-2026-34986)

Summary: CVE-2026-34986 github.com/go-jose/go-jose/v3: github.com/go-jose/go-jose/v4: Go JOSE: Denial of Service via crafted JSON Web Encryption (JWE) object
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: aazores, abuckta, adudiak, agarcial, akoudelk, alcohan, anjoseph, anpicker, aoconnor, aprice, asegurap, bdettelb, bparees, caswilli, ckandaga, cmah, crizzo, derez, dfreiber, dhanak, dkuc, doconnor, drosa, drow, dschmidt, dsimansk, dymurray, eaguilar, ebaron, eborisov, eglynn, erezende, eshamard, fdeutsch, gparvin, gtanzill, hasun, ibolton, jaharrin, jbalunas, jburrell, jbuscemi, jcantril, jdobes, jeder, jfula, jjoyce, jkoehler, jlanda, jmatthew, jmitchel, jmontleo, jolong, jowilson, jprabhak, jsamir, jschluet, jsherril, jvasik, kaycoth, kbempah, kgaikwad, kingland, kshier, kverlaen, lball, lbragsta, lchilton, lgamliel, lhh, ljawale, lphiri, luizcosta, manissin, mburns, mgarciac, mnovotny, mstipich, mwringe, ngough, nweather, nyancey, oezr, ometelka, orabin, oramraz, pahickey, pakotvan, pbohmill, pgaikwad, pjindal, ptisnovs, pvasanth, rblanco, rbobbitt, rexwhite, rfreiman, rhaigner, rjohnson, rochandr, rojacob, sakbas, sausingh, sdawley, sfeifer, simaishi, slucidi, smcdonal, smullick, solenoci, sseago, stcannon, sthirugn, stirabos, syedriko, teagle, thason, veshanka, vkarehfa, vkumar, wenshen, whayutin, wtam, xdharmai, xiyuan, yguenane
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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A flaw was found in Go JOSE, a library for handling JSON Web Encryption (JWE) objects. A remote attacker could exploit this vulnerability by providing a specially crafted JWE object. When decrypting such an object, if a key wrapping algorithm is specified but the encrypted key field is empty, the application can crash. This leads to a denial of service (DoS), making the affected service unavailable to legitimate users.
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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: 2455614, 2455616, 2455618, 2455621, 2455622, 2455624, 2455628, 2455630, 2455636, 2455637, 2455638, 2455639, 2455640, 2455641, 2455642, 2455643, 2455644, 2455645, 2455646, 2455648, 2455649, 2455650, 2455651, 2455652, 2455653, 2455654, 2455655, 2455656, 2455657, 2455658, 2455659, 2455660, 2455661, 2455662, 2455664, 2455666, 2455667, 2455668, 2455669, 2455670, 2455671, 2455673, 2455674, 2455675, 2455676, 2455647, 2455663, 2455665    
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Description OSIDB Bzimport 2026-04-06 17:01:58 UTC 
Go JOSE provides an implementation of the Javascript Object Signing and Encryption set of standards in Go, including support for JSON Web Encryption (JWE), JSON Web Signature (JWS), and JSON Web Token (JWT) standards. Prior to 4.1.4 and 3.0.5, decrypting a JSON Web Encryption (JWE) object will panic if the alg field indicates a key wrapping algorithm (one ending in KW, with the exception of A128GCMKW, A192GCMKW, and A256GCMKW) and the encrypted_key field is empty. The panic happens when cipher.KeyUnwrap() in key_wrap.go attempts to allocate a slice with a zero or negative length based on the length of the encrypted_key. This code path is reachable from ParseEncrypted() / ParseEncryptedJSON() / ParseEncryptedCompact() followed by Decrypt() on the resulting object. Note that the parse functions take a list of accepted key algorithms. If the accepted key algorithms do not include any key wrapping algorithms, parsing will fail and the application will be unaffected. This panic is also reachable by calling cipher.KeyUnwrap() directly with any ciphertext parameter less than 16 bytes long, but calling this function directly is less common. Panics can lead to denial of service. This vulnerability is fixed in 4.1.4 and 3.0.5.