CVE-2024-56357Network attack vector

Account compromise via unsanitized widget and redirect URLs

Published Dec 20, 2024 · Updated Dec 24, 2024

Cross-site scripting in Grist Labs grist-core before 1.3.1 allows remote attackers to compromise accounts through malicious documents or forms. WidgetFrame and FormPage accepted custom widget and success redirect URLs without restricting their schemes, allowing javascript: URLs to execute in the page context. Exploitation requires a user to visit an attacker-prepared document or submit an attacker-prepared form, after which injected script can act with that account's browser privileges.

CVSS severity8.1
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Grist Labs grist-core before 1.3.1 allows remote attackers to compromise accounts through malicious documents or forms. WidgetFrame and FormPage accepted custom widget and success redirect URLs without restricting their schemes, allowing javascript: URLs to execute in the page context. Exploitation requires a user to visit an attacker-prepared document or submit an attacker-prepared form, after which injected script can act with that account's browser privileges.

The record

CVE
CVE-2024-56357
Published
Dec 20, 2024
Updated
Dec 24, 2024
Vendor
Grist Labs
Product
grist-core
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Grist Labs · grist-coreversion=< 1.3.1

Published CVSS scores

8.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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