CVE-2026-44288
Description
protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs includes a minimal UTF-8 decoder that accepted overlong UTF-8 byte sequences and decoded them to their canonical characters instead of replacing them. An attacker who can provide protobuf binary data decoded through the affected UTF-8 path may be able to bypass application-level checks that inspect raw bytes before protobuf string decoding. For example, bytes that do not contain certain ASCII characters could decode to strings containing those characters. This vulnerability is fixed in 7.5.6 and 8.0.2.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
protobufjsnpm | < 7.5.6 | 7.5.6 |
protobufjsnpm | >= 8.0.0, < 8.0.2 | 8.0.2 |
@protobufjs/utf8npm | < 1.1.1 | 1.1.1 |
Affected products
29<= 1.1.0+ 1 more
- (no CPE)range: <= 1.1.0
- cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*range: <7.5.6
- osv-coords27 versionspkg:apk/chainguard/cadence-webpkg:apk/chainguard/gemini-clipkg:apk/chainguard/homepagepkg:apk/chainguard/kibana-8.19pkg:apk/chainguard/kibana-8.19-bitnamipkg:apk/chainguard/kibana-8.19-iamguardedpkg:apk/chainguard/kibana-9.0pkg:apk/chainguard/kibana-9.0-bitnamipkg:apk/chainguard/kibana-9.0-iamguardedpkg:apk/chainguard/kibana-9.1pkg:apk/chainguard/kibana-9.1-iamguardedpkg:apk/chainguard/kibana-9.3pkg:apk/chainguard/kibana-9.3-iamguardedpkg:apk/chainguard/kibana-9.4pkg:apk/chainguard/kibana-9.4-iamguardedpkg:apk/chainguard/kubeflow-centraldashboardpkg:apk/chainguard/librechatpkg:apk/chainguard/opentelemetry-auto-instrumentations-nodepkg:apk/chainguard/pulumi-language-nodejspkg:apk/chainguard/renovatepkg:apk/chainguard/vitess-23pkg:apk/wolfi/kubeflow-centraldashboardpkg:apk/wolfi/pulumi-language-nodejspkg:apk/wolfi/renovatepkg:apk/wolfi/vitess-23pkg:npm/%40protobufjs/utf8pkg:npm/protobufjs
< 4.0.15-r2+ 26 more
- (no CPE)range: < 4.0.15-r2
- (no CPE)range: < 0.44.0-r0
- (no CPE)range: < 1.13.1-r3
- (no CPE)range: < 8.19.15-r0
- (no CPE)range: < 8.19.15-r0
- (no CPE)range: < 8.19.15-r0
- (no CPE)range: < 9.0.8-r29
- (no CPE)range: < 9.0.8-r29
- (no CPE)range: < 9.0.8-r29
- (no CPE)range: < 9.1.10-r18
- (no CPE)range: < 9.1.10-r18
- (no CPE)range: < 9.3.4-r4
- (no CPE)range: < 9.3.4-r4
- (no CPE)range: < 9.4.2-r2
- (no CPE)range: < 9.4.2-r0
- (no CPE)range: < 1.10.0-r21
- (no CPE)range: < 0.8.4-r7
- (no CPE)range: < 0.76.0-r0
- (no CPE)range: < 3.237.0-r1
- (no CPE)range: < 43.170.15-r2
- (no CPE)range: < 23.0.4-r5
- (no CPE)range: < 1.10.0-r21
- (no CPE)range: < 3.237.0-r1
- (no CPE)range: < 43.170.15-r2
- (no CPE)range: < 23.0.4-r5
- (no CPE)range: < 1.1.1
- (no CPE)range: < 7.5.6
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-q6x5-8v7m-xcrfghsaADVISORY
- github.com/protobufjs/protobuf.js/security/advisories/GHSA-q6x5-8v7m-xcrfnvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-44288ghsaADVISORY
- github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v7.5.6ghsaWEB
- github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.0.2ghsaWEB
News mentions
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