Vulnerabilities & Exploits

Artifactory chaining gave attackers admin backdoors

Wiz says multiple actors have chained three JFrog Artifactory flaws since mid-August, turning CVE-2026-42018, CVE-2026-42016, and CVE-2026-82329 into admin access, persistence, and backdoors on self-hosted instances. CISA has already added the first two to its Known Exploited Vulnerabilities catalog, after flagging CVE-2026-82329 a week earlier.

The chain starts with a bug that can hand out an anonymous-user token even when anonymous access is disabled. A second flaw then lets a limited token be treated as more powerful than it should be, so an attacker can climb to administrator and then plant persistent admin accounts, malicious plugins, SSH keys, and second-stage payloads.

That makes this a repository-layer problem, not just a login fix. If Artifactory sits in front of software artifacts, containers, AI models, or package distribution, a compromised instance can keep exposing build inputs and secrets even after the vulnerable login path is patched.

13 sources · Sep 14

CVE-2026-82329

NVD KEV

Known exploited · CISA KEV

CVSS 9.8 CRITICAL: jFrog Artifactory contains an authentication weakness that, under default configuration, may allow an unauthenticated… EPSS 14% (97th percentile).

CISA federal remediation date Sep 5 · date passed

CVE-2026-42016

NVD KEV

Known exploited · CISA KEV

CVSS 8.1 HIGH: jFrog Artifactory (Self Hosted) versions before 7.133.11 are vulnerable to a privilege escalation attack due to a… EPSS 9% (95th percentile).

CISA federal remediation date Sep 25

CVE-2026-42018

NVD KEV

Known exploited · CISA KEV

CVSS 7.5 HIGH: jFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous access is…

CISA federal remediation date Sep 25

Timeline

Sources

Part of the PlainSec briefing for 2026-09-06

Every edition of this story: Artifactory chaining gave attackers admin backdoors

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