Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/timescale/timescaledb/commit/517c13e7cc6afadb4a7deaa7a5a5a290
- https://github.com/timescale/timescaledb/pull/10360
- https://www.vulncheck.com/advisories/timescaledb-out-of-bounds-read-dos-via-bulk
FAQ
What is CVE-2026-70635?
CVE-2026-70635 is a vulnerability with a CVSS score of 7.1 (HIGH). 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 sup...
How severe is CVE-2026-70635?
CVE-2026-70635 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-70635?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.