CVE-2025-8548Public exploitNetwork attack vector

Email enumeration via registration-state error response

Published Aug 5, 2025 · Updated Aug 5, 2025

Information disclosure in atjiu pybbs 6.0.0 and earlier allows remote attackers to enumerate registered email addresses through error responses. SettingsApiController.sendEmailCode queries userService.selectByEmail with the supplied address and returns a distinct error when a matching user exists. Repeated requests reveal which addresses are registered; the published assessment requires no privileges or user interaction but rates exploitation complexity as high.

CVSS severity3.7
Low
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in atjiu pybbs 6.0.0 and earlier allows remote attackers to enumerate registered email addresses through error responses. SettingsApiController.sendEmailCode queries userService.selectByEmail with the supplied address and returns a distinct error when a matching user exists. Repeated requests reveal which addresses are registered; the published assessment requires no privileges or user interaction but rates exploitation complexity as high.

The record

CVE
CVE-2025-8548
Published
Aug 5, 2025
Updated
Aug 5, 2025
Vendor
atjiu
Product
pybbs
Classifications
CWE-200, CWE-209, T1589.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

atjiu · pybbsversion=6.0

Published CVSS scores

3.7VulDBCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
2.9VulDBCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
2.6VulDBAV:N/AC:H/Au:N/C:P/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 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-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-209Generation of Error Message Containing Sensitive Information
T1589.002Gather Victim Identity Information: Email Addresses

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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