# hsweb-framework has an open redirect issue

Advisory record · `GHSA-fxr3-gvm4-m8vc`

- **Identifiers:** `GHSA-fxr3-gvm4-m8vc` · `CVE-2026-11477`
- **State:** Confirmed
- **Severity:** CVSS 5.3 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-601](https://cwe.mitre.org/data/definitions/601.html)
- **Tags:** [Open redirect](https://agentprime.io/advisories/tag/open-redirect.md)
- **Published:** 8 Jun 2026
- **Updated:** 28 Jul 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 8 Jun 2026, 03:47 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `org.hswebframework.web:hsweb-authorization-oauth2` (Maven): affected `<=5.0.1`; no fixed version yet

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> The hsweb-authorization-oauth2 package of hsweb-framework, versions up to and including 5.0.1, has an open redirect flaw in its OAuth2 client. A remote attacker can exploit it to redirect users to an arbitrary site, and a public exploit exists. No fixed version is listed, and the source gives few details on other conditions.

Written 2 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 5.3 Medium, CVSS 4.0: `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`, from CNA (VulDB)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0030, the 23rd percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:19 UTC: First seen by agentprime
- 31 Oct 2026, 14:19 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-fxr3-gvm4-m8vc)

## Sources

- [GitHub Advisory Database: GHSA-fxr3-gvm4-m8vc](https://github.com/advisories/GHSA-fxr3-gvm4-m8vc)
- [OSV: GHSA-fxr3-gvm4-m8vc](https://osv.dev/vulnerability/GHSA-fxr3-gvm4-m8vc)
- <https://nvd.nist.gov/vuln/detail/CVE-2026-11477>
- <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>
- <https://vuldb.com/cve/CVE-2026-11477>
- <https://vuldb.com/submit/833962>
- <https://vuldb.com/vuln/369097>
- <https://vuldb.com/vuln/369097/cti>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-fxr3-gvm4-m8vc>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-fxr3-gvm4-m8vc/>. Everything for agents: <https://agentprime.io/llms.txt>.