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CVE-2026-70633— TimescaleDB 2.29.1 Out-of-Bounds Read DoS via Gorilla Compression Reverse Iterator

Quick assessment

Affected
timescale timescaledb
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TimescaleDB是TimescaleDB公司的一款提供时序数据高效处理的数据库扩展。 TimescaleDB 2.29.1及之前版本存在安全漏洞，该漏洞源于Gorilla压缩反向行迭代器存在越界读取问题，攻击者通过存储内部不一致的BitArray可触发无符号整数回绕，导致读取超出bucket数组末尾，造成拒绝服务。

CVSS 6.5 · Medium EPSS 0.51% · P42

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 2

VendorProduct Version RangeStatus
timescale timescaledb ≤ 2.29.1 affected
517c13e7cc6afadb4a7deaa7a5a5a29065e5b5a3 unaffected
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I. Basic Information for CVE-2026-70633

Vulnerability Information
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Vulnerability Title
TimescaleDB 2.29.1 Out-of-Bounds Read DoS via Gorilla Compression Reverse Iterator
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数下溢(超界折返)
Source: CVE Program / CVE List V5
Vulnerability Title
TimescaleDB 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TimescaleDB是TimescaleDB公司的一款提供时序数据高效处理的数据库扩展。 TimescaleDB 2.29.1及之前版本存在安全漏洞，该漏洞源于Gorilla压缩反向行迭代器存在越界读取问题，攻击者通过存储内部不一致的BitArray可触发无符号整数回绕，导致读取超出bucket数组末尾，造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
timescale timescaledb 0 ~ 2.29.1 -

II. Public POCs for CVE-2026-70633

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III. Intelligence Information for CVE-2026-70633

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Patches & Fixes for CVE-2026-70633 (2)

Vendor Advisories for CVE-2026-70633 (1)

Same Patch Batch · timescale · 2026-08-06 · 3 CVEs total

CVE-2026-70634 8.1 HIGH TimescaleDB 2.29.1 Out-of-Bounds Read Information Disclosure via Dictionary Compression Re
CVE-2026-70635 7.1 HIGH TimescaleDB 2.29.1 Out-of-Bounds Read DoS via Bulk Dictionary Decompression Negative Index

IV. Related Vulnerabilities

Same product: timescaledb
Same vendor: timescale
Same weakness: CWE-191

V. Comments for CVE-2026-70633

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