Vulnerability report

Exploitation Attempts Observed Confirmed Confidence Not in CISA KEV

CVE-2026-23536

Feast: unauthenticated arbitrary file read

Red Hat OpenShift AI (RHOAI) · All versions (default: unaffected)

Watch CVE-2026-23536 Browse KEV feed
Severity
CVSS 7.5 · High
Confidence
Confirmed
Exploit status
Observed in sensors
EPSS
2.4%
First observed
29 Aug 2026
Last observed
28 Oct 2026

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-23536 is an unauthenticated Feast: unauthenticated arbitrary file read affecting Red Hat OpenShift AI (RHOAI). A security issue was discovered in the Feast Feature Server's `/read-document` endpoint that...

Have exploitation attempts been observed?

Yes. Previdian sensors have observed 954 exploitation attempts, 333 unique attacker IPs, and 20 countries targeting CVE-2026-23536. First observed Aug 29, 2026; last observed Oct 28, 2026. Confidence is confirmed.

Who is affected?

Red Hat OpenShift AI (RHOAI) all versions (default: unaffected).

What should we do?

Patch immediately, validate internet-facing exposure, and monitor for matching requests.

Overview

Feast: unauthenticated arbitrary file read

A security issue was discovered in the Feast Feature Server's `/read-document` endpoint that allows an unauthenticated remote attacker to read any file accessible to the server process.

By sending a specially crafted HTTP POST request, an attacker can bypass intended access restrictions to potentially retrieve sensitive system files, application configurations, and credentials.

Red Hat Unaffected
Red Hat OpenShift AI (RHOAI) rhoai/odh-feature-server-rhel9
All versions (default: unaffected)
Red Hat Unaffected
All versions (default: unaffected)
Red Hat Unaffected
All versions (default: unaffected)
Red Hat Unaffected
All versions (default: unaffected)
Red Hat Unaffected
All versions (default: unaffected)
Red Hat Unaffected
All versions (default: unaffected)
Red Hat Unaffected
All versions (default: unaffected)
Red Hat Unaffected
All versions (default: unaffected)
Red Hat Unaffected
All versions (default: unaffected)
Red Hat Unaffected
All versions (default: unaffected)
Red Hat Unaffected
All versions (default: unaffected)
Red Hat Unaffected
All versions (default: unaffected)
Red Hat Unaffected
All versions (default: unaffected)
Red Hat Unaffected
All versions (default: unaffected)
Red Hat Affected
Red Hat OpenShift AI (RHOAI) rhoai/odh-feature-server-rhel9
All versions (default: affected)
Published
20 Mar 2026
Exploitation Attempts Reported
29 Aug 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

nuclei_scanner

CVE References

  • CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2026-23536
  • RHBZ#2429302 bugzilla.redhat.com · Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2429302
  • VDB Entry — access.redhat.com access.redhat.com · VDB Entry https://access.redhat.com/security/cve/CVE-2026-23536

Exploitation evidence

Evidence of exploitation attempts

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploitation Attempts Observed in the Wild

Previdian

Recorded 29 Aug 2026

Previdian sensors observed exploitation attempts targeting this vulnerability.

Exploitation Attempts Observed

Previdian sensor

First observed 29 Aug 2026

Previdian sensors observed exploitation attempts targeting this vulnerability.

Proof of concept available

Nuclei Templates

Recorded 26 Aug 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
Previdian Sensors First 2026-09-14 07:22 UTC

Operational indicators for this CVE are listed under Detection.

Sensor telemetry

Previdian Sensor Observations

Previdian sensor observations are exploitation attempts targeting this vulnerability. They do not show that the target was vulnerable or that the attempt succeeded. The cards and chart show volume, unique attackers, and daily activity.

954

Attempts observed

333

Unique attacker IPs

20

Attacker countries

AF · AR · BE · BG · BR · CA · CH · CN · DE · FR · HK · ID · IN · JP · NL · SC · SG · TW · US · YE

27

Sensors observed

CVE-2026-23536 exploitation attempts over the last 65 days

Daily events observed by Previdian sensors

Updated 31 Oct 2026

0
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
14
6
2
2
220
70
73
9
44
14
27
47
53
8
33
0
40
16
37
28
16
0
4
12
5
12
7
4
1
12
52
68
12
0
0
1
0
0
0
1
0
0
0
0
0
2
0
0
0
28 Aug 10 Sep 23 Sep 6 Oct 31 Oct

First observed 29 Aug 2026 · Last observed 28 Oct 2026

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Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
2
46
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Attacker IP Indicators

Attacker IP indicators observed · available in Pro and Enterprise.

Sensor-derived attacker IP indicators are available to Pro and Enterprise accounts under Detection and through the Pro API.

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Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-23536.yaml 26 Aug 2026

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

7.5 High

Potential damage if exploited. Separate from whether attackers are using it.

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

EPSS

2.4%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-22

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

Feast Feature Server <=0.58.0 - Arbitrary File Read

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation attempts

  1. 18:41 UTC

    Indicators of compromise added (333)

    Indicators of compromise recorded

  2. 18:41 UTC

    Observed by Previdian sensors

    Previdian sensors observed exploitation attempts targeting this vulnerability.

  3. 04:30 UTC

    Public PoC available

    Public proof-of-concept code published

  4. 04:30 UTC

    Nuclei template available

    Scanner coverage available

  5. 21:58 UTC

    CVE published

    Vulnerability disclosed publicly

  6. 19:53 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-23536

Sample API response 
{
  "cve_id": "CVE-2026-23536",
  "confidence": "Confirmed",
  "cvss_score": 7.5,
  "cvss_estimated": false,
  "epss_score": 0.02409,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 954, "sensors": 27 }
}