CVE-2026-108604Medium· 6.3▾ TwilightPoC available

Tabularis through 0.27.0 contains an incorrect authorization vulnerability in the MCP run_query safety gate that allows prompt-injected agents or untrusted MCP clients to bypass read-only mode by submitting side-effecting SELECT statemen…

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score47/ 100 · Moderate

impact 34.7 · likelihood 0 · exploitation 12

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

A public proof-of-concept already exists for this vulnerability — see Exploit availability below.

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Published

Oct 10, 2026

Updated

Oct 16, 2026

CVSS

6.3

Vendor

TabularisDB

Product

tabularis

CWE

CWE-863

Depth score

47 · Moderate

EPSS

0.20% · p10

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H

CISA SSVC

decided 2026-10-13

Exploitation: poc
Automatable: no
Technical impact: total

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 11.

0.1% → 0.2%▲ 0.07%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

5 events · 16 days

Oct 10, 2026Published
Disclosed via NVD
Oct 11, 2026EPSS first tracked
0.1%
Oct 15, 2026Public exploit observed
Exploit / PoC code exists
Oct 16, 2026Record revised
Last analysed / modified upstream
Oct 26, 2026EPSS peak
0.1% → 0.2%

TabularisDB CWE-863 #nvd #cve.org #exploit-available

Affected

tabularis <= 0.27.0

Full technical detail▾

Overview

Tabularis through 0.27.0 contains an incorrect authorization vulnerability in the MCP run_query safety gate that allows prompt-injected agents or untrusted MCP clients to bypass read-only mode by submitting side-effecting SELECT statements. Attackers can run statements like SELECT setval, nextval, or PostgreSQL query_to_xml with embedded DELETE to modify data without approval prompts.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Change history

Field changes observed since this record was first indexed.

Oct 15, 2026Public exploit / PoC published

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org#exploit-available

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