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CVE-2026-3839

22
FAUCET Score

CVE-2026-3839 identifies a high-severity authentication bypass vulnerability in Unraid systems, specifically within the auth-request.php file. This flaw allows unauthenticated remote attackers to bypass authentication by exploiting a path traversal issue due to improper validation of user-supplied paths. With a CVSS score of 7.3, the vulnerability could lead to low impacts on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, no public exploit code available, and minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
7.2.3CPE matchmatch criteria
cpe:2.3:o:unraid:unraid:7.2.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.3HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
3.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.65%
Probability of exploitation in next 30 days
EPSS Percentile
47.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0065 is in the 24th percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

zerodayinitiative.com / advisories/ZDI-26-172
Third Party Advisory