CVE-2026-66384
CVE-2026-66384 is a security flaw in JFrog Artifactory, where companies store their software packages. Attackers can reach parts of JFrog Artifactory that should be locked to them. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 27 Aug 2026.[1]
JFrog Artifactory is business software or equipment. Most families won’t have it, but attackers break into it to get inside companies, and from there to what those companies hold about their customers, patients and staff. Fixed in version 7.146.35 and 7.161.16 of artifactory.
Description
CISA calls it an improper limitation of a pathname to a restricted directory in JFrog Artifactory. In its words: “JFrog Artifactory contains an improper limitation of a pathname to a restricted directory vulnerability. This can allow an authenticated user to write data outside the intended Docker cache path under specific remote-repository conditions.”[1]
The underlying weakness is path traversal (CWE-22), in MITRE’s list of common software weaknesses.[2]
It scores 5.3 out of 10 on the Common Vulnerability Scoring System, which rates it medium, scored by the organisation that published the CVE using CVSS 3.1.[2]
Affected versions
NVD’s record lists these fixed versions: in each line, everything before the version shown is affected.[2]
| Product | Fixed in |
|---|---|
| artifactory | 7.146.35 |
| artifactory | 7.161.16 |
Most families won’t have JFrog Artifactory; it’s for whoever looks after IT at work.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 27 Aug 2026, 15 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 10 Sep 2026 to fix it.[1]
FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at under 1%. That’s in the top 49% of the flaws it scores.[4]
CISA assesses it as not automatable: each attack takes some work.
CISA doesn’t say who was attacked, or how.
Fix
JFrog has published a fix or advice.[3] CISA’s required action: “Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes).”[1]
- Check whether you use it.JFrog Artifactory is business software or equipment, so most families won’t have it. If you run a business, or work from home on company equipment, ask whoever looks after your IT.
- Send this page to your IT person.Ask them to confirm it’s fixed (fixed in version 7.146.35 and 7.161.16 of artifactory), or not in use. CISA gave US government agencies until 10 Sep 2026 to fix it.
- If it can’t be fixed, take it offline.CISA’s advice when there’s no fix is to stop using the product, or take it off the internet, until there is one.
You can’t fix someone else’s server, but you can watch for what follows a break-in like this: a breach notice, a password reset you didn’t ask for, or a scam message that knows things it shouldn’t. HARD watches for those for you and your family.
Timeline
| Date | Event |
|---|---|
| The flaw is made public in the National Vulnerability Database, with a severity score of 5.3.[2] | |
| CISA adds it to its catalog of flaws known to be used in attacks.[1] | |
| CISA’s deadline for US government agencies to fix it.[1] | |
| FIRST puts the odds of it being used in attacks in the next 30 days at under 1%.[4] |
See also
Other JFrog Artifactory flaws
- CVE-2026-42018: improper authentication ·
- CVE-2026-42016: incorrect authorization ·
- CVE-2026-82329: improper authentication ·
Other path traversal flaws
- CVE-2025-61624, Fortinet products: path traversal ·
- CVE-2021-3199, ONLYOFFICE Docs: server path traversal ·
- CVE-2026-104286, Fortinet FortiMail: path traversal ·
- CVE-2026-93616, Check Point products: path traversal ·
- CVE-2026-59310, Broadcom VMware vCenter: path traversal ·
Added the same day
- CVE-2026-53362, Linux Kernel: unspecified ·
- CVE-2023-49105, ownCloud: improper authentication ·
Every JFrog flaw on CISA’s list · Everything added in August 2026
References
- ^ Cybersecurity and Infrastructure Security Agency. “JFrog Artifactory Improper Limitation of a Pathname to a Restricted Directory Vulnerability”. Known Exploited Vulnerabilities Catalog, added 27 Aug 2026.
- ^ National Institute of Standards and Technology. “CVE-2026-66384 Detail”. National Vulnerability Database, published 12 Aug 2026.
- ^ JFrog. Advisories and fixes: docs.jfrog.com, docs.jfrog.com.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.007, percentile 51.8, 31 Oct 2026.
- CVE Program. “CVE-2026-66384”. The official CVE record.
This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.