CVE-2019-25023Public exploitNetwork attack vector

Audit-log poisoning via trusted X-Forwarded-For header

Published Feb 27, 2021 · Updated Aug 5, 2024

Log spoofing in Scytl sVote 2.1 allows remote attackers to falsify source IP addresses in internal application logs via HTTP requests. The logging path trusts the client-controlled X-Forwarded-For header as the request IP address without verifying that a trusted proxy supplied it. No authentication or user interaction is required, and the demonstrated consequence is corruption of audit attribution rather than service interruption.

CVSS severity6.5
Medium
EPSS probability0.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Log spoofing in Scytl sVote 2.1 allows remote attackers to falsify source IP addresses in internal application logs via HTTP requests. The logging path trusts the client-controlled X-Forwarded-For header as the request IP address without verifying that a trusted proxy supplied it. No authentication or user interaction is required, and the demonstrated consequence is corruption of audit attribution rather than service interruption.

The record

CVE
CVE-2019-25023
Published
Feb 27, 2021
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-290, T1036
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 27, 2021CVE 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

6.4NVDAV:N/AC:L/Au:N/C:P/I:P/A:N
6.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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-290Authentication Bypass by Spoofing
T1036Masquerading

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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