High severity · published May 13, 2026
CVE-2026-44289
protobufjs: Denial of service through unbounded protobuf recursion
7.5
CVSS
0.6%
EPSS
No
On KEV
Description
protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs could recurse without a depth limit while decoding nested protobuf data. This affected both skipping unknown group fields and generated decoding of nested message fields. A crafted protobuf binary payload could cause the JavaScript call stack to be exhausted during decoding. This vulnerability is fixed in 7.5.6 and 8.0.2.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PR
protobuf.js · protobufjs
< 7.5.6; >= 8.0.0, < 8.0.2 · source: vendor
PR
Protobufjs · Protobufjs Project
before 7.5.6; 8.0.0 before 8.0.2 · source: NVD
OP
OpenShift Pipelines · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Ansible Automation Platform 2.2 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Ceph Storage 9 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux AI (RHEL AI) 3 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat OpenShift AI (RHOAI) · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat OpenShift AI 3.4 · Red Hat
All versions, or not specified · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44289
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-44289
Mitigation
https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-685m-2w69-288q
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:42815
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:60520
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-44289
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2477130
security.access.redhat.com
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44289.json
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