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TI-2026-49345 Aliases CVE-2026-70635GHSA-55x3-g2hr-288r

TimescaleDB 2.29.1 Out-of-Bounds Read DoS via Bulk Dictionary Decompression Negative Index

Priority LOW 32CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · Low · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00444 38th percentileScored 2026-11-07
Fix Fixed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
timescaletimescaledbup to 2.29.1—Patch availableCNA
  • timescaledb Vendortimescale Affected up to 2.29.1 Fixed in — Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:timescale:timescaledb:*:*:*:*:*:*:*:*up to 2.29.1Vulnerabletimescale
  • cpe:2.3:a:timescale:timescaledb:*:*:*:*:*:*:*:* Versions up to 2.29.1 Vulnerable ·timescale

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-70635
  2. 2026-10-03 Alias added: GHSA-55x3-g2hr-288r

References

Patch 2

  • TI-2023-10611 TimescaleDB has incorrect access control CVSS 3.1HIGH 8.8
  • TI-2026-23232 TimescaleDB uses untrusted search path during extension upgrade CVSS 3.1HIGH 8.8
  • TI-2022-08073 Timescale TimescaleDB 1.x and 2.x before 2.5.2 may allow privilege escalation during… CVSS 3.1HIGH 8.0
  • TI-2026-49344 TimescaleDB 2.29.1 Out-of-Bounds Read Information Disclosure via Dictionary Compression Reverse Iterator CVSS 4.0HIGH 7.2
  • TI-2026-49343 TimescaleDB 2.29.1 Out-of-Bounds Read DoS via Gorilla Compression Reverse Iterator CVSS 4.0HIGH 7.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences