---
cve: "CVE-2026-44293"
severity: "HIGH"
cvss: 7.7
epss: "41%"
vendor: "protobufjs"
kev: false
exploited: false
published: "2026-05-13 16:16:56"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T01:50:20+02:00"
---

# CVE-2026-44293

> 7.7 HIGH · 🧪 PoC

## Beschreibung

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs generated JavaScript for toObject conversion could include an unsafe expression derived from a schema-controlled bytes field default value. A crafted descriptor with a non-string default value for a bytes field could cause attacker-controlled code to be emitted into the generated conversion function. This vulnerability is fixed in 7.5.6 and 8.0.2.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 2189e5beeca6a70e4c104dfdb9fb8200bc5f81fe (Commit)
- 658b93e163d9aff8c31236c168657bab5e2d9bbc (Commit)

## Referenzen

- <https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-66ff-xgx4-vchm>
- <https://access.redhat.com/errata/RHSA-2026:26090>
- <https://access.redhat.com/errata/RHSA-2026:26234>
- <https://access.redhat.com/errata/RHSA-2026:29795>
- <https://access.redhat.com/errata/RHSA-2026:34160>
- <https://access.redhat.com/errata/RHSA-2026:34374>
- <https://access.redhat.com/errata/RHSA-2026:37186>
- <https://access.redhat.com/errata/RHSA-2026:37385>
- <https://access.redhat.com/errata/RHSA-2026:37628>
- <https://access.redhat.com/errata/RHSA-2026:54555>
- <https://access.redhat.com/errata/RHSA-2026:57487>
- <https://access.redhat.com/errata/RHSA-2026:60520>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-44293) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_