Contao up to 3.5.31 Unsubscribe cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Contao up to 3.5.31. This issue affects some unknown processing of the component Unsubscribe Module. Performing a manipulation results in cross site scripting. This vulnerability was named CVE-2018-5478. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Contao up to 3.5.31. This affects some unknown functionality of the component Unsubscribe Module. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

Contao 3.x before 3.5.32 allows XSS via the unsubscribe module in the frontend newsletter extension.

The weakness was presented 09/21/2023. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2018-5478 since 01/12/2018. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 3.5.32 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-2550). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
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: Contao 3.5.32

Timelineinfo

01/12/2018 🔍
09/21/2023 +2077 days 🔍
09/21/2023 +0 days 🔍
09/15/2025 +725 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2018-5478 (🔍)
GCVE (CVE): GCVE-0-2018-5478
GCVE (VulDB): GCVE-100-240123
EUVD: 🔍

Entryinfo

Created: 09/21/2023 10:36
Updated: 09/15/2025 10:53
Changes: 09/21/2023 10:36 (39), 10/14/2023 08:59 (11), 09/15/2025 10:53 (16)
Complete: 🔍
Cache ID: 216::103

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

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