atjiu pybbs up to 6.0.0 Verification Code adminlogin/login Captcha

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability was found in atjiu pybbs up to 6.0.0. It has been rated as problematic. Impacted is the function adminlogin/login of the component Verification Code Handler. Performing a manipulation results in Captcha. This vulnerability is known as CVE-2025-8546. Remote exploitation of the attack is possible. Furthermore, an exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

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 with an unknown input leads to a captcha vulnerability. CWE is classifying the issue as CWE-804. The product uses a CAPTCHA challenge, but the challenge can be guessed or automatically recognized by a non-human actor. This is going to have an impact on confidentiality.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2025-8546. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

The exploit is shared for download at github.com. It is declared as proof-of-concept.

Applying the patch ecaf8d46944fd03e3c4ea05698f8acf0aaa570cf is able to eliminate this problem. The bugfix is ready for download at github.com.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Captcha
CWE: CWE-804 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: ecaf8d46944fd03e3c4ea05698f8acf0aaa570cf

Timelineinfo

08/04/2025 Advisory disclosed
08/04/2025 +0 days VulDB entry created
08/05/2025 +1 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 199
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2025-8546 (🔒)
GCVE (CVE): GCVE-0-2025-8546
GCVE (VulDB): GCVE-100-318675
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/04/2025 15:10
Updated: 08/05/2025 14:49
Changes: 08/04/2025 15:10 (60), 08/05/2025 10:24 (31), 08/05/2025 14:49 (1)
Complete: 🔍
Submitter: ZAST.AI
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #622179: atjiu https://github.com/atjiu/pybbs <=6.0.0 CAPTCHA reuse Vulnerability (by ZAST.AI)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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