CVE-2024-43795Public exploitNetwork attack vector

Remote code execution via unchecked login redirect

Published Oct 2, 2024 · Updated Oct 31, 2024

Reflected XSS in OpenC3 COSMOS Open Source Edition before 5.19.0 allows remote attackers to execute JavaScript through a login link. Login.vue decodes the redirect query parameter and assigns it unchecked to window.location, making a javascript URL executable. A user who can reach the instance must follow the crafted link and sign in; code in that session can invoke the script-runner API for server-side command execution.

CVSS severity5.1
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in OpenC3 COSMOS Open Source Edition before 5.19.0 allows remote attackers to execute JavaScript through a login link. Login.vue decodes the redirect query parameter and assigns it unchecked to window.location, making a javascript URL executable. A user who can reach the instance must follow the crafted link and sign in; code in that session can invoke the script-runner API for server-side command execution.

The record

CVE
CVE-2024-43795
Published
Oct 2, 2024
Updated
Oct 31, 2024
Vendor
OpenC3
Product
COSMOS
Classifications
CWE-79, T1566.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 2, 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=< 5.19.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenC3 · COSMOSversion=< 5.19.0

Published CVSS scores

5.1GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA: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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1566.002Spearphishing Link

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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