What is the CVSS score of CVE-2025-64753?

CVE-2025-64753 has a CVSS 3.1 base score of 5.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.1%.

Which versions of Grist Core are affected by CVE-2025-64753?

Organizations using grist-core should be aware of moderate risk from CVE-2025-64753, a incorrect authorization vulnerability rated CVSS 5.3. Attackers could gain access beyond their authorized level.

How to fix or mitigate CVE-2025-64753?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Grist Core CVE-2025-64753

MEDIUM

Incorrect Authorization (CWE-863)

2025-11-13 security-advisories@github.com

Authentication Bypass Grist Core

5.3

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.3 MEDIUM

AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:22 vuln.today

CVE Published

Nov 13, 2025 - 22:15 nvd

MEDIUM 5.3

DescriptionGitHub Advisory

grist-core is a spreadsheet hosting server. Prior to version 1.7.7, a user with only partial read access to a document could still access endpoints listing hashes for versions of that document and receive a full list of changes between versions, even if those changes contained cells, columns, or tables to which the user was not supposed to have read access. This was fixed in version 1.7.7 by restricting the /compare endpoint to users with full read access. As a workaround, remove sensitive document history using the /states/remove endpoint. Another possibility is to block the /compare endpoint.

AnalysisAI

grist-core is a spreadsheet hosting server. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Incorrect Authorization (CWE-863), which allows attackers to bypass authorization checks to access restricted resources. grist-core is a spreadsheet hosting server. Prior to version 1.7.7, a user with only partial read access to a document could still access endpoints listing hashes for versions of that document and receive a full list of changes between versions, even if those changes contained cells, columns, or tables to which the user was not supposed to have read access. This was fixed in version 1.7.7 by restricting the /compare endpoint to users with full read access. As a workaround, remove sensitive document history using the /states/remove endpoint. Another possibility is to block the /compare endpoint. Affected products include: Getgrist Grist-Core. Version information: version 1.7.7.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Review and test authorization logic, implement consistent access control checks, use centralized authorization framework.