CVE-2022-3206Network attack vector

Password disclosure via base64-encoded authentication cookie

Published Oct 17, 2022 · Updated May 14, 2025

Credential exposure in WP Chill Passster before 3.5.5.5.2 allows remote attackers to recover protected-content passwords from leaked cookies. The plugin writes the password into the passster cookie using reversible base64 encoding rather than a one-way verifier or protected token. Exposure requires acquisition of a user's passster cookie, after which decoding reveals the stored password without cryptanalysis.

CVSS severity5.9
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

Credential exposure in WP Chill Passster before 3.5.5.5.2 allows remote attackers to recover protected-content passwords from leaked cookies. The plugin writes the password into the passster cookie using reversible base64 encoding rather than a one-way verifier or protected token. Exposure requires acquisition of a user's passster cookie, after which decoding reveals the stored password without cryptanalysis.

The record

CVE
CVE-2022-3206
Published
Oct 17, 2022
Updated
May 14, 2025
Vendor
WP Chill
Product
Passster
Classifications
CWE-522, CWE-319, T1555.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 17, 2022CVE publishedPublication date reported by the CVE source.
  2. May 14, 2025Record 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 <3.5.5.5.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WP Chill · Passsterversion=0 <3.5.5.5.2

Published CVSS scores

5.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.9CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/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-522Insufficiently Protected Credentials
CWE-319Cleartext Transmission of Sensitive Information
T1555.003Credentials from Password Stores: Credentials from Web Browsers

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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