{"id":"CLEANSTART-2026-FI63181","summary":"Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection","details":"Multiple security vulnerabilities affect the opa package. Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. See references for individual vulnerability details.","modified":"2026-09-18T12:15:50.651709193Z","published":"2026-09-18T00:46:58.083168Z","withdrawn":"2026-09-18T11:59:01.768079Z","upstream":["CVE-2026-25680","CVE-2026-25681","CVE-2026-27136","CVE-2026-39821","CVE-2026-39827","CVE-2026-39828","CVE-2026-39829","CVE-2026-39830","CVE-2026-39831","CVE-2026-39832","CVE-2026-39833","CVE-2026-39834","CVE-2026-39835","CVE-2026-42502","CVE-2026-42506","CVE-2026-42508","CVE-2026-46595","CVE-2026-46597","CVE-2026-46598","CVE-2026-46600","CVE-2026-56852","CVE-2026-56854","CVE-2026-56855","CVE-2026-78662","CVE-2026-84303","CVE-2026-84304","CVE-2026-84445"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-FI63181.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-25680"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-25681"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-27136"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-39821"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-39827"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-39828"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-39829"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-39830"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-39831"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-39832"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-39833"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-39834"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-39835"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-42502"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-42506"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-42508"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-46595"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-46597"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-46598"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-46600"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-56852"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-56854"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-56855"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-78662"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-84303"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-84304"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-84445"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25680"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25681"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27136"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39821"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39827"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39828"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39829"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39830"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39831"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39832"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39833"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39834"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39835"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42502"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42506"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42508"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46595"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46597"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46598"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46600"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56852"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56854"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56855"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78662"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84303"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84304"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84445"}],"affected":[{"package":{"name":"opa","ecosystem":"CleanStart"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.2-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-FI63181.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}