CVE-2019-19670Public exploitNetwork attack vector

Stored XSS via injected ExtraHTTPHeader response lines

Published Feb 10, 2020 · Updated Aug 5, 2024

HTTP response splitting in MAXUM Rumpus FTP Server 8.2.9.1 Web Settings allows remote attackers to store XSS payloads. The RAPR/WebSettingsGeneralSet.html handler accepts encoded line feeds and script markup in ExtraHTTPHeader, causing injected response content to persist. Direct submission requires a valid session, but cross-site request forgery can coerce an authenticated administrator; viewing the affected response executes the script and permits page defacement.

CVSS severity6.1
Medium
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

HTTP response splitting in MAXUM Rumpus FTP Server 8.2.9.1 Web Settings allows remote attackers to store XSS payloads. The RAPR/WebSettingsGeneralSet.html handler accepts encoded line feeds and script markup in ExtraHTTPHeader, causing injected response content to persist. Direct submission requires a valid session, but cross-site request forgery can coerce an authenticated administrator; viewing the affected response executes the script and permits page defacement.

The record

CVE
CVE-2019-19670
Published
Feb 10, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 10, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/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 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

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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