CVE-2026-123084
MEDIUMDescription
An **expression language injection** has been found in the HeaderContentGuard.permit function in publication.py of the content guard in the **Pulpcore** package. The guard is supposed to check a value in a request header. It saves a jq filter and runs that filter against the header when a client asks for content. The filter is not limited to the header, and jq's env builtin also returns the environment of the content process. A low-privileged network attacker or user who can create a header content guard and attach it to a distribution can save a filter that reads that environment. The content request is allowed or denied according to the filter result. Repeating the request lets that attacker or user recover the environment, including Pulp settings held there, such as the Django secret key or the database password.
Is your site exposed to CVE-2026-123084?
Run a free security scan — no signup, results in seconds.
CVSS v3.1 Score
Weakness Type (CWE)
References
Frequently Asked Questions
What is CVE-2026-123084? +
How severe is CVE-2026-123084? +
How do I check if I'm vulnerable to CVE-2026-123084? +
Related Vulnerabilities
An improper neutralization of inputs used in expression language allows remote code execution with the highest privileges on the server.
ACE vulnerability in JaninoEventEvaluator by QOS.CH logback-core upto including version 0.1 to 1.3.14 and 1.4.0 to 1.5.12 in Java applications …
Spring Cloud Gateway Server Webflux may be vulnerable to Spring Environment property modification. An application should be considered vulnerable when …
In plain terms, Apache Polaris is supposed to issue short-lived GCS credentials that only work for one table's files, but …
Improper neutralization of special elements used in an expression language statement ('Expression Language Injection') vulnerability in Apache Struts. If the …
An issue in xiandafu beetl 3.20.2 allows a remote attacker to execute arbitrary code via the type.new function and the …
