CVE-2026-94401: MISP Arbitrary Local File Read and SSRF via MISP Export Upload

Is it exploited?

Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of 29 Oct 2026. If CISA adds it, this page shows it as known exploited.

How likely is exploitation in the next 30 days?

0.4%

EPSS score, percentile 32.1 of all scored records. A probability estimated by FIRST, not a report of exploitation.

How severe?

8.3 High

CVSS v4.0 base score, given by the CNA

What should I do?

The fix introduces two defensive measures in addMISPExportFile(): (1) a pre-parse validation that rejects any uploaded content not containing an XML document marker (the … Full textSolution from the CVE record.

CISA has set no required action, because the vulnerability is not in KEV.

Advisories and patches (1)

Which versions are affected?

Affected

• before 2.5.47

Versions by product

Source: CISA KEV 2026.10.29, as of 29 Oct 2026; FIRST EPSS, as of 29 Oct 2026; CVE List, as of 29 Oct 2026. About the data.

What to do

Solution (from the CVE record)

The fix introduces two defensive measures in addMISPExportFile(): (1) a pre-parse validation that rejects any uploaded content not containing an XML document marker (the '<' character), preventing path or URL strings from reaching the XML parser; and (2) an explicit readFile => false option passed to Xml::build(), which disables the library's ability to interpret the input as a file path or URL to be read or fetched. Together these changes ensure that only genuine XML document content is parsed and that no server-side file access or network request is triggered by user-supplied data.

Advisories and patches

• Security patch (Patch)

This summary is based on the CVE record as of 29 Oct 2026. Check the vendor's advisory before you act: affected versions and fixes can change.

Affected products and versions

As listed in the CVE record.

Source: CVE List, as of 29 Oct 2026. About the data.

About this vulnerability

MISP has a file-handling vulnerability that could let certain authenticated users make the server read files or access internal network services. When importing an XML file, MISP did not properly verify that the uploaded content was actually XML. Because of this, a user with permission to modify data could upload a file containing a local file path or a web address instead. If a local file path…

Summary: CVE record, as of 29 Oct 2026.

• CISA has not added CVE-2026-94401 to its Known Exploited Vulnerabilities (KEV) catalog, as of 29 Oct 2026.
• The CVE record was published on 21 Sep 2026.
• The CVE record carries a CVSS v4.0 base score of 8.3 (High), given by its CNA.
• FIRST's EPSS model puts the probability of exploitation in the next 30 days at 0.4% (percentile 32.1), as of 29 Oct 2026. EPSS is a statistical estimate, not a report of exploitation.
• CISA's SSVC assessment in the CVE record: exploitation none, automatable no, technical impact partial.
• The credits in the CVE record name Anthropic (Claude) as finder.

Source: CISA KEV 2026.10.29, as of 29 Oct 2026; CVE List, as of 29 Oct 2026; FIRST EPSS, as of 29 Oct 2026. About the data.

Description

MISP Arbitrary Local File Read and SSRF via MISP Export Upload

MISP has a file-handling vulnerability that could let certain authenticated users make the server read files or access internal network services. When importing an XML file, MISP did not properly verify that the uploaded content was actually XML. Because of this, a user with permission to modify data could upload a file containing a local file path or a web address instead. If a local file path was supplied, MISP could read that file from the server. If a URL was supplied, MISP could make a request to that address, including systems that may only be reachable from inside the organization’s network. The vulnerability could therefore expose sensitive local files and allow unauthorized requests to internal services. Exploitation required a valid MISP account with modify permissions, but no additional user interaction was needed. Version affected: <2.5.47

Source: CVE List, as of 29 Oct 2026. About the data.

Timeline