# OHttpVersionChunkDraft: Missing Final-Chunk Enforcement Leads to Undetected Stream Truncation

Advisory record · `GHSA-r6fj-869h-4f6q`

- **Identifiers:** `GHSA-r6fj-869h-4f6q` · `CVE-2026-48480`
- **State:** Confirmed
- **Severity:** CVSS 6.6 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-325](https://cwe.mitre.org/data/definitions/325.html)
- **Tags:** [CWE-325](https://agentprime.io/advisories/tag/cwe-325.md)
- **Published:** 23 Jun 2026
- **Updated:** 23 Jun 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 23 Jun 2026, 21:59 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `io.netty.incubator:netty-incubator-codec-ohttp` (Maven): affected `<0.0.22.Final`; fixed in `0.0.22.Final`

## Machine-written summary

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

> netty-incubator-codec-ohttp versions before 0.0.22.Final do not confirm that the signed final chunk arrived before an OHTTP body ends. An on-path party, such as the relay or a man-in-the-middle on the transport, can truncate a message at a non-final chunk, and the receiver sees no error. Upgrade to 0.0.22.Final.

Written 3 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

- 6.6 Medium, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0017, the 6th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:20 UTC: First seen by agentprime
- 31 Oct 2026, 14:20 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-r6fj-869h-4f6q)

## Sources

- [GitHub Advisory Database: GHSA-r6fj-869h-4f6q](https://github.com/advisories/GHSA-r6fj-869h-4f6q)
- [OSV: GHSA-r6fj-869h-4f6q](https://osv.dev/vulnerability/GHSA-r6fj-869h-4f6q)
- <https://github.com/netty/netty-incubator-codec-ohttp/security/advisories/GHSA-r6fj-869h-4f6q>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-48480>
- <https://github.com/netty/netty-incubator-codec-ohttp/commit/28f977f293591a4e837bd59ceb441f9f70349915>
- <https://github.com/netty/netty-incubator-codec-ohttp>

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-r6fj-869h-4f6q>, 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-r6fj-869h-4f6q/>. Everything for agents: <https://agentprime.io/llms.txt>.