CVE-2024-30845Public exploitNetwork attack vector

Browser script execution via reflected m parameter

Published Apr 12, 2024 · Updated Aug 21, 2024

Reflected XSS in netcccyun Rainbow External Link Network Disk 5.5 allows remote attackers to execute script via the index.php m parameter. The affected index.php emits the m query value into a hidden form field without context-safe output encoding, allowing a quote-closing payload to become executable markup. An unauthenticated attacker must induce a user to open the crafted URL; execution is limited to that user's browser session and the application's origin.

CVSS severity6.1
Medium
EPSS probability0.64%
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 netcccyun Rainbow External Link Network Disk 5.5 allows remote attackers to execute script via the index.php m parameter. The affected index.php emits the m query value into a hidden form field without context-safe output encoding, allowing a quote-closing payload to become executable markup. An unauthenticated attacker must induce a user to open the crafted URL; execution is limited to that user's browser session and the application's origin.

The record

CVE
CVE-2024-30845
Published
Apr 12, 2024
Updated
Aug 21, 2024
Vendor
netcccyun
Product
Rainbow External Link Network Disk
Classifications
CWE-94, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 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=v5.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

netcccyun · Rainbow External Link Network Diskversion=v5.5

Published CVSS scores

6.1CISA-ADPCVSS: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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
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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