Bug 2477106 (CVE-2026-44294)

Summary:	CVE-2026-44294 protobufjs: protobufjs: Denial of Service due to unescaped control characters in field names
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aazores, abarbaro, abuckta, alizardo, amctagga, aoconnor, bbrownin, bniver, caswilli, cdrage, cmah, dkuc, dschmidt, eaguilar, ebaron, erezende, flucifre, gmeno, groman, jchui, jhe, jkoehler, jlanda, jolong, jwong, kaycoth, kshier, ktsao, lchilton, lphiri, manissin, mbenjamin, mhackett, mstipich, nboldt, oaljalju, omaciel, orabin, pjindal, psrna, rexwhite, rhel-process-autobot, rushinde, sfeifer, simaishi, smcdonal, sostapov, stcannon, sthirugn, teagle, ttakamiy, vereddy, watson-tool-maintainers, yguenane
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in protobufjs. This vulnerability occurs because protobufjs, which compiles protobuf definitions into JavaScript (JS) functions, does not properly escape certain control characters in field names when generating JavaScript property accessors. A remote attacker could provide a specially crafted schema or JSON descriptor, causing the generated encode, decode, verify, or conversion functions to fail during compilation. This could lead to a denial of service (DoS) condition for applications using the affected protobufjs library.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2496538, 2496539, 2496540, 2496541, 2496542, 2496543
Bug Blocks:

Description OSIDB Bzimport 2026-05-13 16:04:19 UTC

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs generated JavaScript property accessors from schema-controlled field and oneof names. Certain control characters in field names were not escaped before being embedded into generated function bodies. A crafted schema or JSON descriptor could therefore cause generated encode, decode, verify, or conversion functions to fail during compilation. This vulnerability is fixed in 7.5.6 and 8.0.2.