---
id: "CVE-2026-101501"
kind: "vulnerability"
aliases: ["CVE-2026-101501"]
title: "Oracle Trusted Answer Search: low-privilege network user can modify, delete or crash"
severity: "critical"
cvss: 9.9
epss: null
exploited: false
status: "open"
category: "other"
products: [{"name": "Oracle Trusted Answer Search", "fixed": [], "affected": "26.1", "ecosystem": "vendor"}]
ecosystems: []
tags: ["oracle", "oracle-net", "oracle-trusted-answer-search", "other", "self-hosted", "version-26.1"]
not_affected_if: []
published_at: "2026-10-20T22:17:59+00:00"
first_seen_at: "2026-10-23T21:57:22+00:00"
updated_at: "2026-10-23T23:09:09+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101501", "first_seen_at": "2026-10-23T21:57:22+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-23T23:09:09+00:00"}]
---

# Oracle Trusted Answer Search: low-privilege network user can modify, delete or crash

Oracle Trusted Answer Search 26.1 has a flaw in a PL/SQL package reachable over Oracle Net. A low-privileged network attacker can create, change or delete critical data, read some data, and hang or repeatedly crash the service. Scope change: other components may be affected. Fixed through the October 2026 Critical Patch Update.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Oracle Trusted Answer Search affected 26.1 fixed ?

## How to check

Check whether you run Oracle Trusted Answer Search version 26.1 and whether its Oracle Net listener is reachable by low-privileged accounts. Compare your installed patch level to the October 2026 CPU patch availability document on My Oracle Support.

## Fix

Apply the Oracle October 2026 Critical Patch Update for Trusted Answer Search from My Oracle Support. The exact patch number and fixed version are unknown (needs MOS access). Until then, restrict Oracle Net access to trusted application hosts and review low-privileged accounts.

## Timeline

- 2026-10-23T21:57:22+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-101501
- 2026-10-23T23:09:09+00:00 analyst — Oracle October 2026 CPU (risk matrix text form) confirms 26.1 affected, CVSS 9.9 (AV:N/AC:L/PR:L/S:C/C:L/I:H/A:H). No exploitation reported; no PoC found. Patch number and fixed version not public in sources read (MOS login needed); a secondary blog says download page offers 26.2, unverified. Sibling CVE-2026-101503 is same product (takeover).

## Documents

- [advisory] Oracle Critical Patch Update Advisory - October 2026 https://www.oracle.com/security-alerts/cpuoct2026.html
- [advisory] Text Form of Oracle CPU October 2026 Risk Matrices https://www.oracle.com/security-alerts/cpuoct2026verbose.html
- [mentions] Severity Daily: Trusted Answer Search two 9.9s, 26.1 affected, 26.2 shipping https://severitydaily.com/oracle-trusted-answer-search-cve-2026-101501-101503-9-9-scope-change-26-1-affected-26-2-shipping/

## From the sources

Vulnerability in Oracle Trusted Answer Search (component: PLSQL package).   The supported version that is affected is 26.1. Easily exploitable vulnerability allows low privileged attacker with network access via Oracle Net to compromise Oracle Trusted Answer Search.  While the vulnerability is in Oracle Trusted Answer Search, attacks may significantly impact additional products (scope change).  Successful attacks of this vulnerability can result in  unauthorized creation, deletion or modification access to critical data or all Oracle Trusted Answer Search accessible data as well as  unauthorized read access to a subset of Oracle Trusted Answer Search accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Trusted Answer Search. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H).

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_