CVE-2026-70633 TimescaleDB 2.29.1 Out-of-Bounds Read DoS via Gorilla Compression Reverse Iterator
Authenticated attackers with DML access can cause a denial of service in TimescaleDB by triggering an integer overflow in the Gorilla compression reverse iterator.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-70633?
CVE-2026-70633 is a high-severity vulnerability in timescaledb, published on 6 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-70633?
It affects 1 product.
Products include Timescale Timescaledb.
How do I fix CVE-2026-70633?
No fix has been published for CVE-2026-70633 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-70633 being exploited?
There is no known exploitation of CVE-2026-70633 in the wild and no public exploit code.
Other vulnerabilities in timescaledb
- CVE-2026-29089 TimescaleDB uses untrusted search path during extension upgrade
- CVE-2023-25149 TimescaleDB has incorrect access control
- CVE-2022-24128 Privilege escalation in n/a
- CVE-2026-70634 TimescaleDB 2.29.1 Out-of-Bounds Read Information Disclosure via Dictionary Compression Reverse Iterator
- CVE-2026-70635 TimescaleDB 2.29.1 Out-of-Bounds Read DoS via Bulk Dictionary Decompression Negative Index
Sources
Also known as GHSA-9f3p-792w-mhv3.