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Trusted Answer Search CVE-2026-101505

| EUVDEUVD-2026-105920 HIGH
2026-10-20 secalert_us@oracle.com GHSA-mmr3-rxmv-3p9q
8.7
CVSS 3.1 · NVD
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Authenticate as low-privileged user
  2. Delivery
    Submit crafted payload via Application expert UI
  3. Exploit
    Payload stored and served to victim
  4. Execution
    Victim interaction triggers execution
  5. Persist
    Actions run in victim context
  6. Impact
    Read/modify critical data across scope boundary

Vulnerability Assessment

Exploitation Conditions

Exploitation requires (1) an existing low-privileged authenticated account on Oracle Trusted Answer Search (PR:L), reachable over the network via HTTP (AV:N), and (2) human interaction from a different, typically higher-privileged user who must view or act on the attacker-supplied content (UI:R) through the Application expert UI component. These two factors - mandatory authentication and a required second human victim - are the primary limiters on real-world exploitation; the flaw cannot be triggered purely by an unauthenticated remote attacker or without a victim interacting. The scope change (S:C) means successful attacks may reach additional products beyond Trusted Answer Search itself. Affected version is confined to 26.1.

Impact

This is a genuine high-priority issue (CVSS 3.1 8.7, HIGH) but short of critical, and the signals are internally consistent rather than conflicting. The CVSS vector (AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N) describes a network-reachable, low-complexity flaw requiring an authenticated low-privileged attacker (PR:L) plus interaction from a different victim user (UI:R), with a scope change (S:C) and high confidentiality and integrity impact but no availability impact. That profile - authenticated low-priv actor, victim interaction, scope change, C/I impact without A - is the classic fingerprint of a stored cross-site scripting / injection-style flaw in a web UI, not a true pre-auth RCE. No EPSS score, KEV listing, or public POC was provided, so exploitation probability cannot be quantified from the data; per the precision rules this is 'no public exploit identified at time of analysis.' The 'Authentication Bypass' input tag conflicts with the CVSS vector, which requires privileges (PR:L) and therefore pre-existing authentication - treat that tag as suspect rather than as confirmed behavior. Net: prioritize patching in the next Oracle CPU cycle, but the mandatory authentication plus required victim interaction materially lowers real-world mass-exploitation likelihood relative to the raw score.

Exploit ScenarioDerived

A low-privileged authenticated user of Oracle Trusted Answer Search submits crafted input through the Application expert UI that is stored and later rendered to a higher-privileged user. When that victim views the content, attacker-controlled actions execute in their session, enabling unauthorized read and modification of critical data and, due to the scope change, impact on additional connected products. No public exploit code was identified at time of analysis.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

Oracle Trusted Answer Search 26.1 can allow a low-privileged authenticated attacker with network access to the Application expert UI to create, delete, modify, or read critical data after another user is induced to interact with attacker-supplied content. The CVSS 3.1 score is 8.7 (AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N), reflecting high confidentiality and integrity impact and possible scope change to additional products, with no availability impact. No public exploit code or CISA KEV entry was identified at time of analysis, and exploitation requires both an existing low-privileged account and a separate human victim.

RemediationAI

Apply the Oracle Critical Patch Update referenced at https://www.oracle.com/security-alerts/cpuoct2026.html and use the fixed Trusted Answer Search 26.1 update listed there; the supplied data does not provide an exact patched version number. If the update cannot be applied immediately, restrict HTTP access to the Application expert UI to trusted networks or users, disable the expert UI for low-privileged accounts where feasible, monitor for suspicious content or unexpected data changes, and warn users not to interact with untrusted content. These compensating controls reduce exposure but do not remove the flaw, and restricting or disabling the expert UI may disrupt legitimate workflows.

Affected VersionsENISA

Oracle Trusted Answer Search 26.1

Affected Packages

euvd oracle_trusted_answer_search no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The affected component is the Application expert UI in Oracle Trusted Answer Search, reachable over HTTP. The CVSS vector indicates network access, low privileges, required user interaction, scope change, and high confidentiality and integrity impact with no availability impact. The input provides no CWE identifier and no CPE string, so the exact root-cause weakness class is not confirmed; the supplied 'Authentication Bypass' tag suggests an access-control or authorization weakness in how the expert UI handles attacker-influenced content, but this should not be treated as a confirmed CWE mapping. The S:C scope change means successful exploitation may affect additional products beyond Trusted Answer Search itself, while PR:L and UI:R mean the attacker must already hold a low-privileged account and must persuade a different user to interact with crafted content.

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Severity by source

NVD PRIMARY 8.7 HIGH
AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
vuln.today AI 8.7 HIGH

Network-reachable web UI (AV:N/AC:L); attacker must be authenticated low-priv (PR:L) and needs a separate victim to interact (UI:R); stored-injection scope change (S:C) yields C:H/I:H with no availability impact.

3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N

Primary rating from NVD.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

DescriptionNVD

Vulnerability in Oracle Trusted Answer Search (component: Application expert UI). The supported version that is affected is 26.1. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Trusted Answer Search. Successful attacks require human interaction from a person other than the attacker and 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 access to critical data or complete access to all Oracle Trusted Answer Search accessible data. CVSS 3.1 Base Score 8.7 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N).

Executive ViewAI

Why It Matters

Oracle Trusted Answer Search 26.1 presents a data-trust and confidentiality/integrity exposure for teams using the Application expert UI: an authenticated low-privileged user could leverage another user's interaction with crafted content to read, alter, or delete critical application data, with possible scope change to related products. Leadership should care because this can undermine confidence in business-critical search and answer data, although no public exploit has been identified at time of analysis and availability is not affected.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis; restrict Application expert UI network access, enforce least privilege and role separation, disable non-essential expert UI access, monitor audit logs for anomalous data reads/changes, and train users not to interact with untrusted content.

Threat Intelligence Overview

EPSS Score
0.4%
Top 72% exploitable
Prevalence
Low
niche Oracle enterprise application, limited production deployment footprint
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.4%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
High

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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