# CVE-2026-70635: TimescaleDB through 2.29.1, fixed in commit 517c13e, contains an out-of-bounds read vulnerability that allows…

Source: https://junglewise.ai/threats/cve-2026-70635-timescaledb-through-2-29-1-fixed-in-commit-517c13e-contains-an  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-06  
License: CC BY 4.0 with a link back

CVE-2026-70635 · Severity: high · CVSS 7.1 · Published 2026-08-06

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.

Technologies: [Timescaledb](https://junglewise.ai/threats/technologies/timescaledb). Vendors: [Timescale](https://junglewise.ai/threats/vendors/timescale).

## Quick answers

**Is CVE-2026-70635 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-70635 being exploited in the wild.

**How severe is CVE-2026-70635?** High severity, with a CVSS score of 7.1, published 6 August 2026.

**Which products and versions are affected?** Timescaledb. The advisory does not name versions.

**Is there a fix for CVE-2026-70635?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-70635?** Check whether you run Timescaledb. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Timescaledb

## Related threats

- [TimescaleDB through 2.29.1, fixed in commit 517c13e, contains an out-of-bounds read in the Dictionary compression…](https://junglewise.ai/threats/cve-2026-70634-timescaledb-through-2-29-1-fixed-in-commit-517c13e-contains-an)
- [TimescaleDB through 2.29.1, fixed in commit 517c13e, contains an out-of-bounds read vulnerability in the Gorilla…](https://junglewise.ai/threats/cve-2026-70633-timescaledb-through-2-29-1-fixed-in-commit-517c13e-contains-an)