answer up to 1.0.5 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 (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.2$0-$5k0.00

Summaryinfo

A vulnerability was found in answer up to 1.0.5. It has been classified as problematic. Impacted is an unknown function. This manipulation causes Captcha. The identification of this vulnerability is CVE-2023-1539. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in answer up to 1.0.5. It has been declared as problematic. Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a captcha vulnerability. The CWE definition for the vulnerability is CWE-804. The product uses a CAPTCHA challenge, but the challenge can be guessed or automatically recognized by a non-human actor. As an impact it is known to affect availability. The summary by CVE is:

Guessable CAPTCHA in GitHub repository answerdev/answer prior to 1.0.6.

The weakness was shared 03/21/2023. It is possible to read the advisory at huntr.dev. This vulnerability is known as CVE-2023-1539 since 03/21/2023. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 1.0.6 eliminates this vulnerability. Applying the patch 813ad0b9894673b1bdd489a2e9ab60a44fe990af is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-1008). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CNA Base Score: 5.3
CNA Vector (huntr.dev): 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
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: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: answer 1.0.6
Patch: 813ad0b9894673b1bdd489a2e9ab60a44fe990af

Timelineinfo

03/21/2023 🔍
03/21/2023 +0 days 🔍
03/21/2023 +0 days 🔍
07/06/2025 +838 days 🔍

Sourcesinfo

Advisory: 813ad0b9894673b1bdd489a2e9ab60a44fe990af
Status: Confirmed

CVE: CVE-2023-1539 (🔍)
GCVE (CVE): GCVE-0-2023-1539
GCVE (VulDB): GCVE-100-223459
EUVD: 🔍

Entryinfo

Created: 03/21/2023 08:29
Updated: 07/06/2025 16:46
Changes: 03/21/2023 08:29 (49), 04/12/2023 09:18 (1), 04/12/2023 09:22 (9), 07/06/2025 16:46 (16)
Complete: 🔍
Cache ID: 216::103

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

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