What is CVE-2024-56357?

CVE-2024-56357 is a high-severity vulnerability in Getgrist Grist-Core, classified under Cross-site Scripting. CVSS score: 8.1/10. Published 2024-12-20.

How severe is CVE-2024-56357?

High severity. CVSS v3 base score is 8.1 out of 10.

XSS in Getgrist Grist-Core

CVE-2024-56357

grist-core is a spreadsheet hosting server. A user visiting a malicious document or submitting a malicious form could have their account compromised, because it was possible to use the `javascript:` scheme with custom widget URLs and form redirect URLs. This issue has been patched in version 1.3.1. Users are advised to upgrade. Users unable to upgrade should avoid visiting documents or forms prepared by people they do not trust.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-12-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (21.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: -0.000

Affected products

Getgrist Grist-Core
Gristlabs Grist-Core — versions < 1.3.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/gristlabs/grist-core/security/advisories/GHSA-cq5q-cqr7-vmf6 (Vendor Advisory)
github.com/gristlabs/grist-core/commit/10b069005ec8d5f511e6554a56111d8f257f029e (Patch)

Frequently asked questions

What is CVE-2024-56357?: CVE-2024-56357 is a high-severity vulnerability in Getgrist Grist-Core, classified under Cross-site Scripting. CVSS score: 8.1/10. Published 2024-12-20.
How severe is CVE-2024-56357?: High severity. CVSS v3 base score is 8.1 out of 10.