{"cve":"CVE-2024-34360","nvd":{"published":"2024-05-14T15:38:45.830","modified":"2026-06-17T07:33:14.853","status":"Deferred","description":"go-spacemesh is a Go implementation of the Spacemesh protocol full node. Nodes can publish activations transactions (ATXs) which reference the incorrect previous ATX of the Smesher that created the ATX. ATXs are expected to form a single chain from the newest to the first ATX ever published by an identity. Allowing Smeshers to reference an earlier (but not the latest) ATX as previous breaks this protocol rule and can serve as an attack vector where Nodes are rewarded for holding their PoST data for less than one epoch but still being eligible for rewards. This vulnerability is fixed in go-spacemesh 1.5.2-hotfix1 and Spacemesh API 1.37.1.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","score":8.2},"cwes":["CWE-754"],"references":["https://github.com/spacemeshos/api/commit/1d5bd972bbe225d024c3e0ae5214ddb6b481716e","https://github.com/spacemeshos/go-spacemesh/commit/9aff88d54be809ac43d60e8a8b4d65359c356b87","https://github.com/spacemeshos/go-spacemesh/security/advisories/GHSA-jcqq-g64v-gcm7","https://github.com/spacemeshos/api/commit/1d5bd972bbe225d024c3e0ae5214ddb6b481716e","https://github.com/spacemeshos/go-spacemesh/commit/9aff88d54be809ac43d60e8a8b4d65359c356b87"],"products":[],"source":"nvd","synced_at":"2026-10-19T21:49:23.840078609+00:00"},"epss":{"cve":"CVE-2024-34360","score":0.00734,"percentile":0.54409,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-jcqq-g64v-gcm7","url":"https://osv.dev/vulnerability/GHSA-jcqq-g64v-gcm7","summary":"Previous ATX is not checked to be the newest valid ATX by Smesher when validating incoming ATX","modified":"2026-09-10T03:49:18.839972704Z","packages":[{"ecosystem":"Go","name":"github.com/spacemeshos/go-spacemesh","purl":"pkg:golang/github.com/spacemeshos/go-spacemesh","ranges":["<1.5.2-hotfix1"],"fixed":["1.5.2-hotfix1"]},{"ecosystem":"Go","name":"github.com/spacemeshos/api","purl":"pkg:golang/github.com/spacemeshos/api","ranges":["<1.37.1"],"fixed":["1.37.1"]}]},{"id":"GO-2024-2831","url":"https://osv.dev/vulnerability/GO-2024-2831","summary":"ATX protocol validation problem in github.com/spacemeshos/go-spacemesh","modified":"2024-05-20T16:03:47Z","packages":[{"ecosystem":"Go","name":"github.com/spacemeshos/api/release/go","purl":"pkg:golang/github.com/spacemeshos/api/release/go","ranges":["<1.37.1"],"fixed":["1.37.1"]},{"ecosystem":"Go","name":"github.com/spacemeshos/go-spacemesh","purl":"pkg:golang/github.com/spacemeshos/go-spacemesh","ranges":["<1.5.2-hotfix1"],"fixed":["1.5.2-hotfix1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}