Is CVE-2026-42018 actively exploited?

Yes. Previdian tracks CVE-2026-42018 as a known exploited vulnerability. Confidence is confirmed.

What exploitation activity has Previdian observed?

Previdian has not yet recorded sensor-observed exploitation attempts for CVE-2026-42018. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2026-42018 affects Jfrog artifactory. Previdian lists 5 version rows; examples include 0 to < 7.111.20, 7.117.0 to < 7.117.27, and 7.125.0 to < 7.125.19.

Yes. CVE-2026-42018 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. Added to Previdian from a trusted third-party report 11 hours before CISA listed it.

CVE-2026-42018 Exploited in the Wild — artifactory

Q: What is CVE-2026-42018?

CVE-2026-42018 is an unauthenticated Anonymous user token generation exposure in JFrog Artifactory. JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.

Q: How should organizations remediate it?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Q: Is it in CISA KEV?

Yes. CVE-2026-42018 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. Added to Previdian from a trusted third-party report 11 hours before CISA listed it.

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-42018 is an unauthenticated Anonymous user token generation exposure in JFrog Artifactory. JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous access is...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

Jfrog / artifactory affected before 7.111.20.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Anonymous user token generation exposure in JFrog Artifactory

JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.

Vendor Product Affected Status

jfrog Affected

artifactory

Before 7.111.20 Before 7.117.27 Before 7.125.19 Before 7.133.28 Before 7.146.8

Affected

View vendor advisory

Published: 12 Aug 2026
Exploitation Reported: 10 Sep 2026
Attack vector: Remote
Complexity: Low
Privileges: None
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2026-42018
Vendor Advisory — docs.jfrog.com docs.jfrog.com · Vendor Advisory https://docs.jfrog.com/releases/docs/jfrog-security-advisories
Vendor Advisory — docs.jfrog.com docs.jfrog.com · Vendor Advisory https://docs.jfrog.com/releases/docs/artifactory-self-managed-releases

Exploitation evidence

Why Previdian marks this CVE as exploited

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

Exploited in the wild

Wiz

Recorded 10 Sep 2026

A trusted third party reported exploitation.

Proof of concept available

Nuclei Templates

Recorded 19 Sep 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
Wiz First	2026-09-10 19:04 UTC
CISA	2026-09-11 18:30 UTC
CVE	2026-09-12 04:01 UTC

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: 0; 0; 0

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

Scanner coverage

Nuclei template detected 19 Sep 2026.

View Nuclei template

Virtual patch status

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

Learn about virtual patches →

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-2026-42018.yaml	19 Sep 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

9.8%

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

Weaknesses

Improper Authentication CWE-287

Recent mention · Wiz

17 Sep 2026

Exploring the new AWS Sign Up experience

This post will explore what this new concept does, how it works with the new Account Access capability, and why a strong security posture still requires upgrading out of the sandbox.

Read full advisory

All Mentions

Recent mention · Wiz

Exploring the new AWS Sign Up experience

Wiz · 17 Sep 2026

This post will explore what this new concept does, how it works with the new Account Access capability, and why a strong security posture still requires upgrading out of the sandbox.

Recent mention · Wiz

Building an AI Detection Engine That Understands Agent Intent

Wiz · 17 Sep 2026

Analyzing model input and output logs in an AI-native detection pipeline to understand and uncover malicious AI agent behavior

Recent mention · Wiz

一緒に投資する: Wiz Defend と Google Security Operations

Wiz · 15 Sep 2026

Wiz Defend と Google Security Operations の統合をさらに深め、チームが調査を行う場所を問わず、より迅速な作業を支援します。

Recent mention · TheRegister

More JFrog Artifactory bugs under attack, and all 3 have patches

TheRegister · 11 Sep 2026

If you're waiting for a sign to upgrade to a fixed version: this is it

Recent mention · Wiz

Artifactory Under Attack: In-the-Wild Exploitation of CVE-2026-42016, CVE-2026-42018 & CVE-2026-82329

Wiz · 10 Sep 2026

Wiz Research has identified active, in-the-wild exploitation of three critical and high-severity vulnerabilities impacting JFrog Artifactory (CVE-2026-42016, CVE-2026-42018 & CVE-2026-82329). Attackers are chaining these vulnerabilities to bypass authentication and gain administrative control.

Potential Proof of Concepts

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

JFrog Artifactory - Anonymous Token Disclosure via Trailing Slash Auth Bypass

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

19 Sep 2026
04:31 UTC

Public PoC available

Public proof-of-concept code published
19 Sep 2026
04:31 UTC

Nuclei template available

Scanner coverage available
12 Sep 2026
04:01 UTC

KEV confirmed by CVE

Exploitation attested by an external source
11 Sep 2026
18:30 UTC

Added to CISA KEV

Listed in the CISA Known Exploited Vulnerabilities catalog
10 Sep 2026
19:04 UTC

Added to Previdian KEV Feed

High-confidence, third-party attested exploitation
13 Aug 2026
00:00 UTC

Added to the Previdian watchlist

Pro and Enterprise Watch users had 4 weeks of early warning before CISA KEV. Also 4 weeks before Previdian confirmed it as a KEV.
12 Aug 2026
17:43 UTC

CVE published

Vulnerability disclosed publicly
23 Apr 2026
13:41 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-2026-42018

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2026-42018",
  "confidence": "Confirmed",
  "cvss_score": 7.5,
  "cvss_estimated": false,
  "epss_score": 0.09805,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

CVE-2026-42018

Anonymous user token generation exposure in JFrog Artifactory

Tags

CVE References

Exploited in the wild

Proof of concept available

Known exploited vulnerability sources

Observed signals

Scanner coverage

Virtual patch status

Scanner Artifacts

Weaknesses

Exploring the new AWS Sign Up experience

All Mentions

Potential Proof of Concepts

Public PoC available

Nuclei template available

KEV confirmed by CVE

Added to CISA KEV

Added to Previdian KEV Feed

Added to the Previdian watchlist

CVE published

CVE ID reserved

Automate this intelligence