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CVE-2026-12977

HIGHCVSS 8.8/10EPSS 0.25%

Last modified

CVE-2026-12977 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 0.25% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.25%

15.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10All versions
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8All versions
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9All versions
Red HatRed Hat Fuse 7All versions
Red HatRed Hat JBoss Enterprise Application Platform 7All versions
Red HatRed Hat Single Sign-On 7All versions

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-12977?
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.
How severe is CVE-2026-12977?
CVE-2026-12977 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.
How do I fix CVE-2026-12977?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST