CVE-2026-70634

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Source
https://cve.org/CVERecord?id=CVE-2026-70634
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70634.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-70634
Published
2026-08-06T16:53:58Z
Modified
2026-09-03T03:48:20Z
Severity
  • 7.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
TimescaleDB 2.29.1 Out-of-Bounds Read Information Disclosure via Dictionary Compression Reverse Iterator
Details

TimescaleDB through 2.29.1, fixed in commit 517c13e, contains an out-of-bounds read in the Dictionary compression reverse row iterator (tsl/src/compression/algorithms/dictionary.c). The forward path validates the decoded index; the reverse path uses an assertion compiled out of release builds, leaving the 64-bit Simple8b index unvalidated and the read offset attacker-controlled. Attackers with DML access to a physical compressed relation can store a crafted datum and run a reverse-order scan. With a pass-by-value column type the out-of-bounds Datum is returned to the client as a normal column value, disclosing backend memory including the shared buffer pool, which SQL access control does not cover.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-125",
        "CWE-129"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70634.json"
}
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
517c13e7cc6afadb4a7deaa7a5a5a29065e5b5a3
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:timescale:timescaledb:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.29.1"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

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

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70634.json"