# Microsoft Discovery Studio Information Disclosure Vulnerability

CVE record · `CVE-2026-62906`

- **Identifiers:** `CVE-2026-62906`
- **State:** Confirmed
- **Severity:** CVSS 7.4 High
- **Critical:** No
- **CNA:** microsoft
- **Weakness (CWE):** [CWE-943](https://cwe.mitre.org/data/definitions/943.html)
- **Tags:** [Other injection](https://agentprime.io/advisories/tag/injection.md)
- **Technologies:** [Microsoft Discovery Studio](https://agentprime.io/advisories/technology/microsoft-discovery-studio.md)
- **Published:** 3 Sept 2026
- **Updated:** 10 Nov 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: microsoft) at 3 Sept 2026, 22:59 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Microsoft. Product: Microsoft Discovery Studio.
  - affected: `-`

## Machine-written summary

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

> Microsoft Discovery Studio is affected, with no affected version range given in the source. The source describes improper neutralization of special elements in data query logic, which lets an unauthorized attacker disclose information over a network. The source gives few details on the conditions required. No fix or workaround is listed in the source.

Written 11 Nov 2026.

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 7.4 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C`, from CNA (microsoft)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0092, the 60th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 3 Sept 2026, 22:59 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2026-62906)
- 31 Oct 2026, 16:26 UTC: First seen by agentprime

## Sources

- [CVE List: CVE-2026-62906](https://www.cve.org/CVERecord?id=CVE-2026-62906)
- [NVD: CVE-2026-62906](https://nvd.nist.gov/vuln/detail/CVE-2026-62906)

### References from the CNA

- <https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62906> (vendor-advisory, patch)

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-62906>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-62906/>. Everything for agents: <https://agentprime.io/llms.txt>.