{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"timescale/timescaledb","product":"timescaledb","source":"CNA: VulnCheck","vendor":"timescale","versions":[{"lessThanOrEqual":"2.29.1","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"517c13e7cc6afadb4a7deaa7a5a5a29065e5b5a3","versionType":"git"}]}],"cveId":"CVE-2026-70635","cwes":["CWE-129","CWE-125"],"description":"TimescaleDB through 2.29.1, fixed in commit 517c13e, contains an out-of-bounds read vulnerability that allows authenticated attackers to cause query-result integrity failures or backend crashes by supplying a crafted Simple8b selector-11 value, which is stored in the signed int16 Arrow dictionary-index type and bypasses index validation checks in bulk text dictionary decompression. Attackers with direct DML access to a non-frozen physical compressed hypertable relation can trigger an out-of-bounds read before the base of the live offsets array through the VectorAgg single-text hashing strategy, resulting in incorrect aggregation output, backend SIGSEGV, or PostgreSQL crash recovery depending on build configuration.","epss":{"date":"2026-11-08","percentile":0.38857,"score":0.00444},"exploits":[],"kev":null,"metrics":[{"score":7.1,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":7.1,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","version":"3.1"}],"modifiedAt":1794146910666,"publishedAt":1786035277899,"references":[{"source":"CNA: VulnCheck","tags":["issue-tracking","patch"],"url":"https://github.com/timescale/timescaledb/pull/10360"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/timescale/timescaledb/commit/517c13e7cc6afadb4a7deaa7a5a5a29065e5b5a3"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/timescaledb-out-of-bounds-read-dos-via-bulk-dictionary-decompression-negative-index"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/timescale/timescaledb/pull/10360"},{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/timescale/timescaledb/commit/517c13e7cc6afadb4a7deaa7a5a5a29065e5b5a3"}],"revision":"50b5c4239eb2a26eef9b56757548c29cdfce8a59bd8cdb9b3cd1b2cbc8c1b74f","sources":[{"modifiedAt":1794146910666,"name":"CNA: VulnCheck","retrievedAt":1794151319696,"url":"https://www.cve.org/CVERecord?id=CVE-2026-70635"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794151338499,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-70635"}],"ssvc":{"assessedAt":1786111263861,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"TimescaleDB 2.29.1 Out-of-Bounds Read DoS via Bulk Dictionary Decompression Negative Index","updatedAt":1794151338499}