CVE-2026-70633: Timescale Timescaledb

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

TimescaleDB through 2.29.1, fixed in commit 517c13e, contains an out-of-bounds read vulnerability in the Gorilla compression reverse row iterator that allows authenticated attackers to cause a denial of service by storing a crafted compressed datum with an internally inconsistent BitArray. Attackers with DML access to a compressed hypertable can trigger an unsigned integer wraparound in the reverse iterator bucket index computation, causing a read beyond the end of the bucket array, resulting in a SIGSEGV crash that can be repeatedly triggered on each subsequent reverse-order scan.

Affected products

• Timescale Timescaledb: up to and including 2.29.1

Published 2026-08-06. Last modified 2026-09-01.