{"id":"CVE-2024-55563","details":"Bitcoin Core through 27.2 allows transaction-relay jamming via an off-chain protocol attack, a related issue to CVE-2024-52913. For example, the outcome of an HTLC (Hashed Timelock Contract) can be changed because a flood of transaction traffic prevents propagation of certain Lightning channel transactions.","modified":"2026-07-15T01:49:15.219727419Z","published":"2024-12-09T00:00:00Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/55xxx/CVE-2024-55563.json","unresolved_ranges":[{"source":"DESCRIPTION","extracted_events":[{"fixed":"27.2"}]}],"cna_assigner":"mitre"},"references":[{"type":"WEB","url":"https://ariard.github.io"},{"type":"WEB","url":"https://bitcoincore.org"},{"type":"WEB","url":"https://delvingbitcoin.org/t/full-disclosure-transaction-relay-throughput-overflow-attacks-against-off-chain-protocols/1305"},{"type":"WEB","url":"https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures"},{"type":"WEB","url":"https://gnusha.org/pi/bitcoindev/CALZpt+EptER=p+P7VN3QAb9n=dODA9_LnR9xZwWpRsdAwedv=w@mail.gmail.com/T/#u"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/55xxx/CVE-2024-55563.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-55563"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/bitcoin/bitcoin","events":[{"introduced":"0"},{"last_affected":"bf03c458e994abab9be85486ed8a6d8813313579"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:bitcoin:bitcoin_core:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"27.2"}]}}],"versions":["v27.2","v27.2rc1","v27.1","v27.1rc1","v27.0","v27.0rc1","v21.99-guixtest1","v0.9.0rc2","noversion","v0.8.0","v0.9.0rc1","v0.8.2","v0.7.1rc1","v0.7.1","v0.8.2rc2","v0.8.2rc3","v0.8.2rc1","v0.8.0rc1","v0.7.0rc3","v0.7.0","v0.7.0rc2","v0.7.0rc1","v0.6.0rc6","v0.6.0","v0.6.1","v0.5.0rc7","v0.5.0","v0.6.1rc2","v0.6.1rc1","v0.6.0rc5","v0.6.0rc4","v0.6.0rc3","v0.4.0","v0.6.0rc2","v0.6.0rc1","v0.5.1rc2","v0.5.1","v0.5.1rc1","v0.5.0rc6","v0.5.0rc5","v0.5.0rc4","v0.5.0rc2","v0.5.0rc1","v0.4.00rc2","v0.4.00rc1","v0.3.24","v0.3.24rc3","v0.3.24rc2","v0.3.24rc1","v0.3.23rc1","v0.3.23","v0.3.22","v0.3.22rc3","v0.3.22rc4","v0.3.22rc2","v0.3.22rc1","v0.3.21","v0.3.21rc","v0.3.20.2_closest","v0.3.20.01_closest","v0.3.20","v0.3.11_notexact","v0.3.8","v0.3.7","v0.3.6","v0.3.3","v0.3.2","v0.3.1","v0.3.1rc1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-55563.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}