{"id":"CVE-2026-10268","summary":"janet-lang janet marsh.c unmarshal_one_fiber integer overflow","details":"A weakness has been identified in janet-lang janet up to 1.41.0. This vulnerability affects the function unmarshal_one_fiber of the file src/core/marsh.c. Executing a manipulation can lead to integer overflow. It is possible to launch the attack on the local host. The exploit has been made available to the public and could be used for attacks. This patch is called d9b1d711ea1fde52ac73a82088b512a3e17bad0d. A patch should be applied to remediate this issue.","modified":"2026-07-15T23:33:37.119657Z","published":"2026-06-01T15:00:12.912Z","database_specific":{"cna_assigner":"VulDB","cwe_ids":["CWE-189","CWE-190"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10268.json","unresolved_ranges":[{"extracted_events":[{"introduced":"1.14"},{"last_affected":"1.14"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"WEB","url":"https://github.com/janet-lang/janet/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10268.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-10268"},{"type":"ADVISORY","url":"https://vuldb.com/cve/CVE-2026-10268"},{"type":"ADVISORY","url":"https://vuldb.com/submit/825075"},{"type":"ADVISORY","url":"https://vuldb.com/vuln/367547"},{"type":"REPORT","url":"https://github.com/janet-lang/janet/issues/1744"},{"type":"REPORT","url":"https://vuldb.com/vuln/367547/cti"},{"type":"FIX","url":"https://github.com/janet-lang/janet/commit/d9b1d711ea1fde52ac73a82088b512a3e17bad0d"},{"type":"EVIDENCE","url":"https://github.com/biniamf/pocs/tree/main/janet-marsh-unmarshal-intovf"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/janet-lang/janet","events":[{"introduced":"d66f8333c1d0324f43ec59ad4b66a88d52ec8f4b"},{"fixed":"d9b1d711ea1fde52ac73a82088b512a3e17bad0d"}],"database_specific":{"extracted_events":[{"introduced":"1.0"},{"last_affected":"1.0"},{"introduced":"1.1"},{"last_affected":"1.1"},{"introduced":"1.2"},{"last_affected":"1.2"},{"introduced":"1.3"},{"last_affected":"1.3"},{"introduced":"1.4"},{"last_affected":"1.4"},{"introduced":"1.5"},{"last_affected":"1.5"},{"introduced":"1.6"},{"last_affected":"1.6"},{"introduced":"1.7"},{"last_affected":"1.7"},{"introduced":"1.8"},{"last_affected":"1.8"},{"introduced":"1.9"},{"last_affected":"1.9"},{"introduced":"1.10"},{"last_affected":"1.10"},{"introduced":"1.11"},{"last_affected":"1.11"},{"introduced":"1.12"},{"last_affected":"1.12"},{"introduced":"1.13"},{"last_affected":"1.13"},{"introduced":"1.15"},{"last_affected":"1.15"},{"introduced":"1.16"},{"last_affected":"1.16"},{"introduced":"1.17"},{"last_affected":"1.17"},{"introduced":"1.18"},{"last_affected":"1.18"},{"introduced":"1.19"},{"last_affected":"1.19"},{"introduced":"1.20"},{"last_affected":"1.20"},{"introduced":"1.21"},{"last_affected":"1.21"},{"introduced":"1.22"},{"last_affected":"1.22"},{"introduced":"1.23"},{"last_affected":"1.23"},{"introduced":"1.24"},{"last_affected":"1.24"},{"introduced":"1.25"},{"last_affected":"1.25"},{"introduced":"1.26"},{"last_affected":"1.26"},{"introduced":"1.27"},{"last_affected":"1.27"},{"introduced":"1.28"},{"last_affected":"1.28"},{"introduced":"1.29"},{"last_affected":"1.29"},{"introduced":"1.30"},{"last_affected":"1.30"},{"introduced":"1.31"},{"last_affected":"1.31"},{"introduced":"1.32"},{"last_affected":"1.32"},{"introduced":"1.33"},{"last_affected":"1.33"},{"introduced":"1.34"},{"last_affected":"1.34"},{"introduced":"1.35"},{"last_affected":"1.35"},{"introduced":"1.36"},{"last_affected":"1.36"},{"introduced":"1.37"},{"last_affected":"1.37"},{"introduced":"1.38"},{"last_affected":"1.38"},{"introduced":"1.39"},{"last_affected":"1.39"},{"introduced":"1.40"},{"last_affected":"1.40"},{"introduced":"1.41.0"},{"last_affected":"1.41.0"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["1.0","1.1","1.10","1.11","1.12","1.13","1.15","1.16","1.17","1.18","1.19","1.2","1.20","1.21","1.22","1.23","1.24","1.25","1.26","1.27","1.28","1.29","1.3","1.30","1.31","1.32","1.33","1.34","1.35","1.36","1.37","1.38","1.39","1.4","1.40","1.41.0","1.5","1.6","1.7","1.8","1.9","v1.41.2","v1.41.1","v1.41.0","v1.38.0","v1.40.1","v1.40.0","v1.39.1","v1.39.0","v1.37.1","v1.37.0","v1.36.0","v1.35.2","v1.35.1","v1.35.0","v1.34.0","v1.33.0","v1.32.1","v1.32.0","v1.31.0","v1.30.0","v1.29.1","v1.29.0","v1.28.0","v1.27.0","v1.26.0","v1.25.1","v1.25.0","v1.24.1","v1.24.0","v1.23.0","v1.22.0","v1.21.2","v1.21.1","v1.21.0","v1.20.0","v1.19.2","v1.19.1","1.19.1-rc1","v1.19.0","v1.18.1","v1.18.0","v1.17.2","v1.17.1","v1.17.0","v1.16.1","v1.16.0","v1.15.5","v1.15.4","v1.15.3","v1.15.2","v1.15.1","v1.15.0","v1.14.2","v1.14.1","v1.13.1","v1.13.0","v1.9.1","v1.9.0","v1.8.1","v1.8.0","v1.7.0","v1.6.0","v1.5.1","v1.5.0","v1.4.0","v1.2.0","v1.1.0","v1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10268.json","vanir_signatures_modified":"2026-07-15T23:33:37Z","vanir_signatures":[{"id":"CVE-2026-10268-82446426","signature_type":"Function","signature_version":"v1","source":"https://github.com/janet-lang/janet/commit/d9b1d711ea1fde52ac73a82088b512a3e17bad0d","target":{"file":"src/core/marsh.c","function":"unmarshal_one_fiber"},"deprecated":false,"digest":{"function_hash":"118727020596014839685098805983286489842","length":3271}},{"deprecated":false,"digest":{"line_hashes":["244347338866202072526395594737916237264","3310832653665077872855517427825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