CVE-2026-70635

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-70635
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70635.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-70635
Published
2026-08-06T16:54:37.899Z
Modified
2026-08-08T03:47:59.036069715Z
Severity
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
TimescaleDB 2.29.1 Out-of-Bounds Read DoS via Bulk Dictionary Decompression Negative Index
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70635.json",
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-125",
        "CWE-129"
    ]
}
References

Affected packages

Git / github.com/timescale/timescaledb

Affected ranges

Type
GIT
Repo
https://github.com/timescale/timescaledb
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
bdc46d313480287d2c21aa50abf405a1493a1769
Fixed
517c13e7cc6afadb4a7deaa7a5a5a29065e5b5a3
Database specific 
{
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.29.1"
        }
    ]
}

Affected versions

0.*
0.0.1-beta
0.0.10-beta
0.0.11-beta
0.0.12-beta
0.0.2-beta
0.0.3-beta
0.0.4-beta
0.0.5-beta
0.0.6-beta
0.0.7-beta
0.0.8-beta
0.0.9-beta
0.1.0
0.10.0
0.10.1
0.11.0
0.12.0
0.2.0
0.3.0
0.4.0
0.4.1
0.5.0
0.6.0
0.7.0
0.8.0
0.9.0
0.9.1
0.9.2
1.*
1.0.0
1.0.0-rc1
1.0.0-rc2
1.0.0-rc3
1.1.0
2.*
2.0.0-beta2
2.0.0-beta3
2.0.0-beta4
2.0.0-beta5
2.0.0-beta6
2.13.0-dev
2.13.0-dev1
2.29.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70635.json"