CVE-2024-37763Public exploitNetwork attack vector

Stored script execution via unsanitized signature input

Published Jul 1, 2024 · Updated Oct 31, 2024

Stored cross-site scripting in MachForm before 19 allows remote attackers to run JavaScript in an authenticated result viewer's browser. The view.php submission handler stores unsanitized element_{n}text_signature or paired element{n} input and renders it when a result entry is edited. A public form with a text-signature field must accept the crafted submission, and a user permitted to view results must open the stored entry.

CVSS severity5.4
Medium
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in MachForm before 19 allows remote attackers to run JavaScript in an authenticated result viewer's browser. The view.php submission handler stores unsanitized element_{n}text_signature or paired element{n} input and renders it when a result entry is edited. A public form with a text-signature field must accept the crafted submission, and a user permitted to view results must open the stored entry.

The record

CVE
CVE-2024-37763
Published
Jul 1, 2024
Updated
Oct 31, 2024
Vendor
Laymance Technologies LLC
Product
MachForm
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 31, 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=0 <19

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Laymance Technologies LLC · MachFormversion=0 <19

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

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.

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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 exploitPublished

Weakness, pattern, technique

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

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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