How severe is CVE-2026-44295?

CVE-2026-44295 has a CVSS 3.x base score of 8.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-44295 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44295?

CVE-2026-44295 affects Protobufjs Project Protobufjs-cli. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44295?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-44295 have an EU (EUVD) identifier?

Yes. CVE-2026-44295 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30033.

When was CVE-2026-44295 published?

CVE-2026-44295 was published on 2026-05-13 and last updated on 2026-06-17.

CVE-2026-44295

CVE-2026-44295 is a high-severity vulnerability in Protobufjs Project Protobufjs-cli with a CVSS 3.x base score of 8.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 8.7)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30033
Weakness: CWE-94
Affected product: Protobufjs Project Protobufjs-cli
Published: 2026-05-13
Last modified: 2026-06-17

Description

protobufjs-cli is the command line add-on for protobuf.js. Prior to 1.2.1 and 2.0.2, pbjs static code generation could emit unsafe JavaScript identifiers derived from schema-controlled names. When generating static JavaScript from a crafted schema or JSON descriptor, certain namespace, enum, service, or derived full names could be written into the generated output without sufficient sanitization. This vulnerability is fixed in 1.2.1 and 2.0.2.

Frequently asked questions

What is CVE-2026-44295?: protobufjs-cli is the command line add-on for protobuf.js. Prior to 1.2.1 and 2.0.2, pbjs static code generation could emit unsafe JavaScript identifiers derived from schema-controlled names. When generating static JavaScript from a crafted schema or JSON descriptor, certain namespace, enum, service, or derived full names could be written into the generated output without sufficient sanitization. This vulnerability is fixed in 1.2.1 and 2.0.2.
How severe is CVE-2026-44295?: CVE-2026-44295 has a CVSS 3.x base score of 8.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-44295 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44295?: CVE-2026-44295 affects Protobufjs Project Protobufjs-cli. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44295?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-44295 have an EU (EUVD) identifier?: Yes. CVE-2026-44295 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30033.
When was CVE-2026-44295 published?: CVE-2026-44295 was published on 2026-05-13 and last updated on 2026-06-17.

References

https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-6r35-46g8-jcw9

Affected products (1)

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

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