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CVE

CVE-2025-8546

A vulnerability, which was classified as problematic, was found in atjiu pybbs up to 6.0.0. This affects the function ad

A vulnerability, which was classified as problematic, was found in atjiu pybbs up to 6.0.0. This affects the function adminlogin/login of the component Verification Code Handler. The manipulation leads to guessable captcha.

It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The patch is named ecaf8d46944fd03e3c4ea05698f8acf0aaa570cf.

It is recommended to apply a patch to fix this issue.

MEDIUM · CVSS 5.3 EPSS 0.00315
Schedule remediation
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-287Improper Authentication
CWE-804Guessable CAPTCHA
▤

Affected Products & Versions

1
pybbs project pybbs<= 6.0.0
⚠

Public Exploits & PoCs

2
pocgithub.com · issues/199github.com
pocgithub.com · 199#issue-3256276118github.com
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · cna@vuldb.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD05 Aug 2025 · 05:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/atjiu/pybbs/commit/ecaf8d46944fd03e3c4ea05698f8acf0aaa570cfPatch
https://github.com/atjiu/pybbs/issues/199#issuecomment-3134573731Issue Tracking
https://vuldb.com/?ctiid.318675Permissions RequiredVDB Entry
https://vuldb.com/?id.318675Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.622179Third Party AdvisoryVDB Entry
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