CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2026-12977
High (8.8). EPSS 0.2% estimated probability of exploitation activity in the next 30 days.
A flaw was found in the deployment-operation family of WildFly Core. Certain handlers, such as upload-deployment-url, lack proper sensitivity classification, allowing an administrator with the restricted "Maintainer" role to read sensitive configuration files. This can lead to the exfiltration of credentials and full administrative control (SuperUser) of the server.
Severity
- EPSS
- 0.2% estimated probability of exploitation activity in the next 30 days; 16th percentile. Scored 2026-11-10. A forecast for this CVE across the internet, not for your own systems.
- CWE
- CWE-267 Privilege Defined With Unsafe Actions
- Published
- Modified
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
Ask an AI about this CVE
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Explain CVE-2026-12977 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-12977?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-12977?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-12977 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.
Attack patterns (CAPEC)
- CAPEC-58 Restful Privilege Elevation Likelihood: High · Severity: High
- CAPEC-634 Probe Audio and Video Peripherals Likelihood: Low · Severity: High
- CAPEC-637 Collect Data from Clipboard Likelihood: Low · Severity: Low
- CAPEC-643 Identify Shared Files/Directories on System Likelihood: Medium · Severity: Medium
- CAPEC-648 Collect Data from Screen Capture Likelihood: Medium · Severity: Medium
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.