# Legacy \`azure_core\` writes the \`authorization\` header value to logs

Advisory record · `RUSTSEC-2026-0275`

- **Identifiers:** `RUSTSEC-2026-0275`
- **State:** Confirmed
- **Severity:** CVSS 6.5 Medium
- **Critical:** No
- **Published:** 15 Aug 2026
- **Updated:** 1 Sept 2026
- **Reviewed by a person:** No

Published by OSV at 15 Aug 2026, 12:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `azure_core` (crates.io): affected `>=0.0.0-0, <0.2.0 || >=0.2.1-0, <0.22.0`; fixed in `0.2.0`, `0.22.0`

## 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

- 6.5 Medium, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N`, from OSV

- **CISA KEV:** Not listed.
- **EPSS:** No score.

## Timeline

- 31 Oct 2026, 15:17 UTC: First seen by agentprime
- 31 Oct 2026, 15:17 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/RUSTSEC-2026-0275)

## Sources

- [OSV: RUSTSEC-2026-0275](https://osv.dev/vulnerability/RUSTSEC-2026-0275)
- <https://crates.io/crates/azure_core>
- <https://rustsec.org/advisories/RUSTSEC-2026-0275.html>
- <https://github.com/Azure/azure-sdk-for-rust/pull/1699>
- <https://github.com/Azure/azure-sdk-for-rust/commit/7a0e20c1e002ce06da0f3ec8795ef1529862ea97>

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/RUSTSEC-2026-0275>, 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/RUSTSEC-2026-0275/>. Everything for agents: <https://agentprime.io/llms.txt>.