How severe is CVE-2026-44294?

CVE-2026-44294 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-44294 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44294?

CVE-2026-44294 affects Protobufjs Project Protobufjs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44294?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-44294 have an EU (EUVD) identifier?

Yes. CVE-2026-44294 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30032.

When was CVE-2026-44294 published?

CVE-2026-44294 was published on 2026-05-13 and last updated on 2026-06-17.

CVE-2026-44294

CVE-2026-44294 is a medium-severity vulnerability in Protobufjs Project Protobufjs with a CVSS 3.x base score of 5.3. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30032
Weakness: CWE-20
Affected product: Protobufjs Project Protobufjs
Published: 2026-05-13
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-44294?: 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.
How severe is CVE-2026-44294?: CVE-2026-44294 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-44294 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44294?: CVE-2026-44294 affects Protobufjs Project Protobufjs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44294?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-44294 have an EU (EUVD) identifier?: Yes. CVE-2026-44294 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30032.
When was CVE-2026-44294 published?: CVE-2026-44294 was published on 2026-05-13 and last updated on 2026-06-17.

References

https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-2pr8-phx7-x9h3

Affected products (1)

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

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