CVE-2026-35480
go-ipld-prime's DAG-CBOR decoder unbounded memory allocation from CBOR headers
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 6.2EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
07 Apr 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
go-ipld-prime is an implementation of the InterPlanetary Linked Data (IPLD) spec interfaces, a batteries-included codec implementations of IPLD for CBOR and JSON, and tooling for basic operations on IPLD objects. Prior to 0.22.0, the DAG-CBOR decoder uses collection sizes declared in CBOR headers as Go preallocation hints for maps and lists. The decoder does not cap these size hints or account for their cost in its allocation budget, allowing small payloads to cause excessive memory allocation. This vulnerability is fixed in 0.22.0.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
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