EUVD-2026-42310Published

protobufjs: Denial of Service via infinite loop in .proto option parsing

Collected exploitation and prediction evidence

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

cve-program · CVE-2026-59877

Published

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.6.5 and 8.6.6, protobufjs parsed option names by advancing through schema tokens until reaching an = token without checking for end of input, so a crafted .proto schema that opens an option declaration and ends prematurely can cause parse, Root.load, or Root.loadSync to loop indefinitely. This issue is fixed in versions 7.6.5 and 8.6.6.

Source published: 8 Jul 2026 15:28:07 UTC
Source modified: 8 Jul 2026 15:49:27 UTC
Observed here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

euvd · EUVD-2026-42310

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Jul 8, 2026, 3:28:07 PM

dateUpdated: Jul 8, 2026, 3:49:27 PM

16 related source bulletins · separate from aliases

RHSA-2026:57590: Red Hat Security Advisory: rh-podman-desktop security, bug fix, and enhancement update

CVE-2026-9595 · CVE-2026-12143 · CVE-2026-13149 · CVE-2026-13676 · CVE-2026-14257 · CVE-2026-34986 · CVE-2026-42338 · CVE-2026-42570 · CVE-2026-44705 · CVE-2026-45623 · CVE-2026-45736 · CVE-2026-45740 · CVE-2026-48068 · CVE-2026-48779 · CVE-2026-48801 · CVE-2026-49978 · CVE-2026-56876 · CVE-2026-59869 · CVE-2026-59873 · CVE-2026-59874 · CVE-2026-59877 · CVE-2026-69152 · CVE-2026-69153 · CVE-2026-69192

RHSA-2026:60477: Red Hat Security Advisory: OpenShift Container Platform 4.21.31 bug fix and security update

CVE-2026-12143 · CVE-2026-33814 · CVE-2026-39829 · CVE-2026-42151 · CVE-2026-46597 · CVE-2026-48801 · CVE-2026-54423 · CVE-2026-59869 · CVE-2026-59877 · CVE-2026-66138 · CVE-2026-69152 · CVE-2026-73086

RHSA-2026:52768: Red Hat Security Advisory: Red Hat Developer Hub 1.9.8 release.

CVE-2026-5038 · CVE-2026-5079 · CVE-2026-13149 · CVE-2026-46625 · CVE-2026-48068 · CVE-2026-48069 · CVE-2026-48712 · CVE-2026-49978 · CVE-2026-59869 · CVE-2026-59877 · CVE-2026-59892

RHSA-2026:71179: Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.6 Container Release Update

CVE-2025-57847 · CVE-2025-66418 · CVE-2026-12564 · CVE-2026-14257 · CVE-2026-15307 · CVE-2026-33818 · CVE-2026-42215 · CVE-2026-42284 · CVE-2026-42504 · CVE-2026-44244 · CVE-2026-49825 · CVE-2026-53488 · CVE-2026-53492 · CVE-2026-54284 · CVE-2026-56853 · CVE-2026-56858 · CVE-2026-56859 · CVE-2026-56860 · CVE-2026-56862 · CVE-2026-59877 · CVE-2026-59893 · CVE-2026-67322 · CVE-2026-67323 · CVE-2026-67325 · CVE-2026-69152 · CVE-2026-69153 · CVE-2026-69244 · CVE-2026-71458 · CVE-2026-71459 · CVE-2026-71460 · CVE-2026-71462 · CVE-2026-71463 · CVE-2026-71464 · CVE-2026-71465 · CVE-2026-71491 · CVE-2026-73086 · CVE-2026-73620 · CVE-2026-73622 · CVE-2026-73623 · CVE-2026-73624 · CVE-2026-73625 · CVE-2026-75884 · CVE-2026-75899 · CVE-2026-75931 · CVE-2026-75975 · CVE-2026-76172 · CVE-2026-76218 · CVE-2026-76219 · CVE-2026-76220 · CVE-2026-76221 · CVE-2026-76222 · CVE-2026-78676 · CVE-2026-78679 · CVE-2026-82417 · CVE-2026-84292 · CVE-2026-84375 · CVE-2026-84394 · CVE-2026-84470 · CVE-2026-84474 · CVE-2026-84486 · CVE-2026-84499 · CVE-2026-84502 · CVE-2026-84638 · CVE-2026-84643 · CVE-2026-84644 · CVE-2026-84679 · CVE-2026-84680 · CVE-2026-84683 · CVE-2026-84684 · CVE-2026-84686 · CVE-2026-84689 · CVE-2026-84691 · CVE-2026-84692 · CVE-2026-84703 · CVE-2026-84706 · CVE-2026-84707 · CVE-2026-84708 · CVE-2026-84709 · CVE-2026-84711 · CVE-2026-84712 · CVE-2026-84714 · CVE-2026-84716 · CVE-2026-84717 · CVE-2026-84718 · CVE-2026-84719 · CVE-2026-84720 · CVE-2026-84724 · CVE-2026-85393 · CVE-2026-87817

RHSA-2026:49642: Red Hat Security Advisory: Red Hat Developer Hub 1.10.3 release.

CVE-2026-5038 · CVE-2026-5079 · CVE-2026-13149 · CVE-2026-13676 · CVE-2026-42504 · CVE-2026-45740 · CVE-2026-46625 · CVE-2026-48068 · CVE-2026-48069 · CVE-2026-48801 · CVE-2026-49978 · CVE-2026-59869 · CVE-2026-59877 · CVE-2026-59892

RHSA-2026:51162: Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.2 security update

CVE-2026-13149 · CVE-2026-44902 · CVE-2026-45740 · CVE-2026-48068 · CVE-2026-48801 · CVE-2026-59873 · CVE-2026-59877

RHSA-2026:57365: Red Hat Security Advisory: OpenShift Container Platform 4.22.11 bug fix and security update

CVE-2026-14257 · CVE-2026-27136 · CVE-2026-33186 · CVE-2026-33814 · CVE-2026-39829 · CVE-2026-59869 · CVE-2026-59877 · CVE-2026-66138 · CVE-2026-69152 · CVE-2026-73086

RHSA-2026:68333: Red Hat Security Advisory: Red Hat build of Cryostat security update

CVE-2026-15075 · CVE-2026-15076 · CVE-2026-16308 · CVE-2026-33818 · CVE-2026-41178 · CVE-2026-45112 · CVE-2026-48586 · CVE-2026-49978 · CVE-2026-54399 · CVE-2026-54428 · CVE-2026-55831 · CVE-2026-55833 · CVE-2026-55851 · CVE-2026-55874 · CVE-2026-55969 · CVE-2026-56745 · CVE-2026-56746 · CVE-2026-56819 · CVE-2026-56854 · CVE-2026-56858 · CVE-2026-56859 · CVE-2026-56860 · CVE-2026-56862 · CVE-2026-58372 · CVE-2026-59869 · CVE-2026-59877 · CVE-2026-59899 · CVE-2026-68494 · CVE-2026-69152 · CVE-2026-69192

RHSA-2026:62260: Red Hat Security Advisory: Red Hat OpenShift Dev Spaces 3.30.0 Release.

CVE-2025-55163 · CVE-2026-8286 · CVE-2026-9277 · CVE-2026-9547 · CVE-2026-9563 · CVE-2026-10050 · CVE-2026-10051 · CVE-2026-12143 · CVE-2026-12151 · CVE-2026-13149 · CVE-2026-15075 · CVE-2026-15076 · CVE-2026-27136 · CVE-2026-34986 · CVE-2026-39820 · CVE-2026-39831 · CVE-2026-39835 · CVE-2026-40898 · CVE-2026-40983 · CVE-2026-40984 · CVE-2026-41242 · CVE-2026-41695 · CVE-2026-41716 · CVE-2026-42264 · CVE-2026-42499 · CVE-2026-44705 · CVE-2026-45149 · CVE-2026-45416 · CVE-2026-45623 · CVE-2026-45674 · CVE-2026-46597 · CVE-2026-46681 · CVE-2026-47691 · CVE-2026-48020 · CVE-2026-48068 · CVE-2026-48491 · CVE-2026-49978 · CVE-2026-50010 · CVE-2026-50193 · CVE-2026-53488 · CVE-2026-53492 · CVE-2026-53622 · CVE-2026-54399 · CVE-2026-54428 · CVE-2026-54512 · CVE-2026-54513 · CVE-2026-54763 · CVE-2026-55831 · CVE-2026-55833 · CVE-2026-56745 · CVE-2026-56746 · CVE-2026-56819 · CVE-2026-59296 · CVE-2026-59869 · CVE-2026-59873 · CVE-2026-59874 · CVE-2026-59877 · CVE-2026-59888 · CVE-2026-59899 · CVE-2026-65600 · CVE-2026-65601 · CVE-2026-67213 · CVE-2026-67214 · CVE-2026-68494 · CVE-2026-69152 · CVE-2026-69153 · CVE-2026-73086 · CVE-2026-73566 · CVE-2026-73646 · CVE-2026-75838

WID-SEC-W-2026-2618: IBM App Connect Enterprise: Mehrere Schwachstellen

CVE-2026-11525 · CVE-2026-12151 · CVE-2026-13676 · CVE-2026-53550 · CVE-2026-54285 · CVE-2026-59869 · CVE-2026-59877 · CVE-2026-6733 · CVE-2026-6734 · CVE-2026-9675 · CVE-2026-9678 · CVE-2026-9679 · CVE-2026-9697

RHSA-2026:50839: Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.2 security update

CVE-2026-48068 · CVE-2026-59877

RHSA-2026:67279: Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.7 Container Release Update

CVE-2025-57847 · CVE-2026-12564 · CVE-2026-14257 · CVE-2026-15307 · CVE-2026-42215 · CVE-2026-42284 · CVE-2026-42504 · CVE-2026-44244 · CVE-2026-49825 · CVE-2026-54284 · CVE-2026-59877 · CVE-2026-59893 · CVE-2026-67322 · CVE-2026-67323 · CVE-2026-67325 · CVE-2026-69152 · CVE-2026-69153 · CVE-2026-69243 · CVE-2026-69244 · CVE-2026-71491 · CVE-2026-73620 · CVE-2026-73622 · CVE-2026-73623 · CVE-2026-73624 · CVE-2026-73625 · CVE-2026-75899 · CVE-2026-75931 · CVE-2026-75975 · CVE-2026-76172 · CVE-2026-78679 · CVE-2026-84375

RHSA-2026:49680: Red Hat Security Advisory: Kiali 2.22.8 for Red Hat OpenShift Service Mesh 3.3

CVE-2026-49978 · CVE-2026-59869 · CVE-2026-59873 · CVE-2026-59874 · CVE-2026-59877

RHSA-2026:49735: Red Hat Security Advisory: Kiali 2.27.2 for Red Hat OpenShift Service Mesh 3.4

CVE-2026-49978 · CVE-2026-59877

RHSA-2026:50850: Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.1 security update

CVE-2026-9277 · CVE-2026-43997 · CVE-2026-43998 · CVE-2026-43999 · CVE-2026-44000 · CVE-2026-44001 · CVE-2026-44002 · CVE-2026-44003 · CVE-2026-44004 · CVE-2026-44005 · CVE-2026-44006 · CVE-2026-44007 · CVE-2026-44008 · CVE-2026-44009 · CVE-2026-45411 · CVE-2026-47131 · CVE-2026-47135 · CVE-2026-47137 · CVE-2026-47139 · CVE-2026-47140 · CVE-2026-47141 · CVE-2026-47209 · CVE-2026-48068 · CVE-2026-48801 · CVE-2026-59877

RHSA-2026:48126: Red Hat Security Advisory: Red Hat Developer Hub 1.10.3 Plugin Catalog GA plugins release.

CVE-2026-5038 · CVE-2026-5079 · CVE-2026-13149 · CVE-2026-13676 · CVE-2026-45740 · CVE-2026-46625 · CVE-2026-48068 · CVE-2026-48069 · CVE-2026-48801 · CVE-2026-49978 · CVE-2026-59869 · CVE-2026-59877

Source published: Jul 8, 2026, 3:28:07 PM (timezone not stated)
Source modified: Jul 8, 2026, 3:49:27 PM (timezone not stated)
Observed here: 7 Nov 2026 13:25:57 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 3.1 · 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

nvd · CVE-2026-59877

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-835

Original publisher date fields

published: 2026-07-08T16:16:34.363

lastModified: 2026-10-25T17:10:00.197

1 source CPE criteria · context only

cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 8 Jul 2026 16:16:34 UTC
Source modified: 25 Oct 2026 17:10:00 UTC
Observed here: 27 Oct 2026 15:15:33 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · [email protected] · Secondary · 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS 3.1 · [email protected] · Primary · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

osv · GHSA-j3f2-48v5-ccww

Published

## Summary protobufjs parsed option names by advancing through schema tokens until it reached an `=` token, without checking for end of input. A crafted `.proto` schema that opens an option declaration but ends prematurely could cause the option parser to loop without ever terminating. This affects the reflection parsing path (`parse`, `Root.load`, `Root.loadSync`). ## Impact An attacker who can provide or influence `.proto` schema text parsed by an application may be able to cause the parsing call to never return. Because Node.js is single-threaded, the blocked event loop prevents all other work in the process, resulting in a denial of service that persists until the process is externally terminated. Applications that only encode or decode protobuf binary data with trusted schemas are not directly affected. ## Preconditions - The application must parse `.proto` schema text influenced by an attacker. - The schema must be parsed through APIs such as `parse`, `Root.load`, or `Root.loadSync`. - The crafted input must begin an option declaration that ends before its `=` assignment. ## Workarounds Do not parse `.proto` schemas from untrusted sources with affected versions. If untrusted schema text must be accepted, isolate parsing in a process or worker that can be safely terminated and bound it with a timeout, so a non-returning parse call cannot deny service to the rest of the application.

Source published: 20 Jul 2026 22:03:00 UTC
Source modified: 10 Sep 2026 03:50:12 UTC
Observed here: 24 Oct 2026 13:17:17 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Publisher rating · MODERATE