CVE-2026-27944
Nginx UI: Unauthenticated Backup Download with Encryption Key Disclosure
No known exploitation. EPSS puts it in the 62nd percentile. A vendor fix is available.
What to do
The vendor has published a fix. Version details are below where the sources state them.
What it is
From the CVE record
Nginx-UI Vulnerable to Unauthenticated Backup Download with Encryption Key Disclosure
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
1.0% chance of exploitation activity in the next 30 days, which ranks it in the 62nd percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
- Attention now
unknown.
Real risk signals with little public attention so far.
Lifecycle
10 events over 203 days, from the signal feeds we watch.
- EPSS band changemoderate → lowepss band change
- OpenVAS check added
- EPSS band changelow → moderate
- Nuclei check added
- Patch availablepublished, weakness classified, att&ck mapped, record updated
Affected products
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Scored 9.8 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
Sources
References in the record
- github.com/0xJacky/nginx-ui/security/advisories/GHSA-g9w5-qffc-6762
- nvd.nist.gov/vuln/detail/CVE-2026-27944
- csrc.nist.gov/publications/detail/sp/800-57-part-1/rev-5/final
And 3 more references. See all after sign-in
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