CVE-2026-108604Proof of concept (PoC) published · CISA

Tabularis through 0.27.0 Read-Only Bypass via MCP run_query SELECT Classification

CVSS score

5.8

EPSS probability

%0.1

Risk score

0.0

Published

2 d ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

CVE-2026-108604 Authorization Bypass Vulnerability in Tabularis

Sources read

Source agreement

0/2

Evidence confidence

%44

Short explanation

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

Why does it matter?

Unauthorized users or malicious agents can execute statements that modify or impact data without triggering approval prompts, posing a risk to system integrity and availability.

What should be done?

Follow vendor advisories and apply available updates
Strictly monitor and restrict MCP client and agent access
Implement robust input validation against potential prompt injection vectors

Note on uncertainty

2 alanda kaynak uyuşmazlığı var. DayBreach bu değerleri saklamadı; kaynak karşılaştırması aşağıda gösteriliyor.

Chain of evidence and sources3 verified claims

Tabularis 0.27.0 ve önceki sürümler, MCP run_query güvenlik kapısında yanlış yetkilendirme zafiyeti barındırmaktadır.

S0 · daybreach-canonical S1 · cvelist S2 · nvd

Saldırganlar, salt okunur modu atlatmak için setval, nextval veya gömülü DELETE içeren query_to_xml gibi ifadeler çalıştırabilir.

S0 · daybreach-canonical S1 · cvelist S2 · nvd

Kaynaklar arasında CVSS taban puanı ve vektör değerlerinde farklılıklar bulunmaktadır.

S1 · cvelist S2 · nvd

Show the technical text from the sources

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.

CVSS vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

CWE: CWE-863

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-108604 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	TabularisDB	tabularis	View

Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
6.3	CVSS V3_1	MEDIUM	CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H	CVE CNA
6.3	CVSS V31	MEDIUM	CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H	NVD
5.8	CVSS V4_0	MEDIUM	CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N	CVE CNA
5.8	CVSS V40	MEDIUM	CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X	NVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-108604 is associated with the following CWEs:

CWE-863: Common Weakness Enumeration Entry CWE-863

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-108604 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureYerel erişim

PermissionsGerekmiyor

User—

Official Sources and Advisories

https://hackmd.io/@haind/S1BofaIsMxvendor-advisory https://github.com/TabularisDB/tabularis/blob/804c4c3bb6fd8eaa2e36cbe49f6c0d58f373b5e9/src-tauri/src/ai_activity.rs#L357-L416vendor-advisory https://github.com/TabularisDB/tabularis/blob/804c4c3bb6fd8eaa2e36cbe49f6c0d58f373b5e9/src-tauri/src/mcp/mod.rs#L1136-L1171vendor-advisory https://github.com/TabularisDB/tabularisvendor-advisory VulnCheck Advisory: Tabularis through 0.27.0 Read-Only Bypass via MCP run_query SELECT Classificationvendor-advisory

CVSS Vector Radar Chart

5.8 / 10

Vulnerability Scoring Details

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone required

User InteractionP

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)P

Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

TabularisDB

Weakness Type (CWE & CAPEC)

CWE-863

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