CVE-2023-6699Network attack vector

Unauthenticated file read via css path traversal

Published Jan 11, 2024 · Updated Apr 8, 2026

Path traversal in WP Compress – Instant Performance & Speed Optimization 6.10.33 and earlier allows remote attackers to read server files. The css parameter is incorporated into a file path without neutralizing ../ sequences, allowing resolution outside the intended directory. No authentication or user interaction is required, and exposure is limited to files readable by the server process.

CVSS severity9.1
Critical
EPSS probability0.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in WP Compress – Instant Performance & Speed Optimization 6.10.33 and earlier allows remote attackers to read server files. The css parameter is incorporated into a file path without neutralizing ../ sequences, allowing resolution outside the intended directory. No authentication or user interaction is required, and exposure is limited to files readable by the server process.

The record

CVE
CVE-2023-6699
Published
Jan 11, 2024
Updated
Apr 8, 2026
Vendor
WP Compress
Product
WP Compress – Instant Performance & Speed Optimization
Classifications
CWE-22, CWE-24, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record 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 <=6.10.33

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WP Compress · WP Compress – Instant Performance & Speed Optimizationversion=0 <=6.10.33

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
9.1WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-24Path Traversal: '../filedir'
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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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