# katello: missing repository authorization in content_uploads exposes cross-product content existence

Advisory record · `GHSA-c43c-rf7g-5xpg`

- **Identifiers:** `GHSA-c43c-rf7g-5xpg` · `CVE-2026-12515`
- **State:** Confirmed
- **Severity:** CVSS 4.3 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-862](https://cwe.mitre.org/data/definitions/862.html)
- **Tags:** [Broken access control](https://agentprime.io/advisories/tag/access-control.md)
- **Published:** 17 Jun 2026
- **Updated:** 5 Aug 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 17 Jun 2026, 18:35 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `katello` (RubyGems): affected `<4.21.0.rc1`; fixed in `4.21.0.rc1`

## 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

- 4.3 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`, from CNA (redhat)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0022, the 12th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 15:16 UTC: First seen by agentprime
- 31 Oct 2026, 15:16 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-c43c-rf7g-5xpg)

## Sources

- [GitHub Advisory Database: GHSA-c43c-rf7g-5xpg](https://github.com/advisories/GHSA-c43c-rf7g-5xpg)
- [OSV: GHSA-c43c-rf7g-5xpg](https://osv.dev/vulnerability/GHSA-c43c-rf7g-5xpg)
- <https://nvd.nist.gov/vuln/detail/CVE-2026-12515>
- <https://github.com/Katello/katello/pull/11712>
- <https://access.redhat.com/errata/RHSA-2026:50221>
- <https://access.redhat.com/errata/RHSA-2026:50222>
- <https://access.redhat.com/errata/RHSA-2026:50223>
- <https://access.redhat.com/errata/RHSA-2026:50263>
- <https://access.redhat.com/security/cve/CVE-2026-12515>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2489812>
- <https://github.com/Katello/katello>
- <https://github.com/rubysec/ruby-advisory-db/blob/master/gems/katello/CVE-2026-12515.yml>

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-c43c-rf7g-5xpg>, 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-c43c-rf7g-5xpg/>. Everything for agents: <https://agentprime.io/llms.txt>.