CVE Explorer
CVE-2026-44288
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
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"protobuf.js","vendor":"protobufjs","versions":[{"status":"affected","version":"< 7.5.6"},{"status":"affected","version":">= 8.0.0, < 8.0.2"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:c926661ae3baed3e966076d8637f9f24d96a3d11bf42e5d6616dc32d281401b9 · sha256:4c3a6b73e42ff5ec… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:c926661ae3baed3e966076d8637f9f24d96a3d11bf42e5d6616dc32d281401b9 · sha256:4c3a6b73e42ff5ec… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-176","description":"CWE-176: Improper Handling of Unicode Encoding","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:c926661ae3baed3e966076d8637f9f24d96a3d11bf42e5d6616dc32d281401b9 · sha256:4c3a6b73e42ff5ec… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-q6x5-8v7m-xcrf","tags":["x_refsource_CONFIRM"],"url":"https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-q6x5-8v7m-xcrf"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:c926661ae3baed3e966076d8637f9f24d96a3d11bf42e5d6616dc32d281401b9 · sha256:4c3a6b73e42ff5ec… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.