{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-2240","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","state":"PUBLISHED","assignerShortName":"VulDB","dateReserved":"2026-02-09T09:38:25.338Z","datePublished":"2026-02-09T15:32:10.307Z","dateUpdated":"2026-02-23T10:00:07.480Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","shortName":"VulDB","dateUpdated":"2026-02-23T10:00:07.480Z"},"title":"janet-lang janet compile.c janetc_pop_funcdef out-of-bounds","problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-125","lang":"en","description":"Out-of-Bounds Read"}]},{"descriptions":[{"type":"CWE","cweId":"CWE-119","lang":"en","description":"Memory Corruption"}]}],"affected":[{"vendor":"janet-lang","product":"janet","versions":[{"version":"1.40.0","status":"affected"},{"version":"1.40.1","status":"affected"}]}],"descriptions":[{"lang":"en","value":"A vulnerability has been found in janet-lang janet up to 1.40.1. The impacted element is the function janetc_pop_funcdef of the file src/core/compile.c. Such manipulation leads to out-of-bounds read. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. The name of the patch is 4dd08a4cdef5b1c42d9a2c19fc24412e97ef51d5. A patch should be applied to remediate this issue."}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":4.8,"vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":3.3,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","baseSeverity":"LOW"}},{"cvssV3_0":{"version":"3.0","baseScore":3.3,"vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","baseSeverity":"LOW"}},{"cvssV2_0":{"version":"2.0","baseScore":1.7,"vectorString":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C"}}],"timeline":[{"time":"2026-02-09T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-02-09T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-02-09T18:15:47.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"Oneafter (VulDB User)","type":"reporter"}],"references":[{"url":"https://vuldb.com/?id.344979","name":"VDB-344979 | janet-lang janet compile.c janetc_pop_funcdef out-of-bounds","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.344979","name":"VDB-344979 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.753155","name":"Submit #753155 | janet-lang janet 883dde4 Heap-based Buffer Overflow","tags":["third-party-advisory"]},{"url":"https://github.com/janet-lang/janet/issues/1702","tags":["issue-tracking"]},{"url":"https://github.com/janet-lang/janet/issues/1702#issuecomment-3790473369","tags":["issue-tracking"]},{"url":"https://github.com/oneafter/0123/blob/main/ja4/repro","tags":["exploit"]},{"url":"https://github.com/janet-lang/janet/commit/4dd08a4cdef5b1c42d9a2c19fc24412e97ef51d5","tags":["patch"]},{"url":"https://github.com/janet-lang/janet/","tags":["product"]}],"tags":["x_open-source"]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-09T16:06:11.954193Z","id":"CVE-2026-2240","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-02-09T16:06:52.054Z"}}]}}