BillaBear up to 2025.01.03 Installation InstallController.php processInstall missing authentication

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k1.80

Summaryinfo

A vulnerability labeled as critical has been found in BillaBear up to 2025.01.03. This affects the function processInstall of the file src/BillaBear/Controller/InstallController.php of the component Installation Handler. Such manipulation leads to missing authentication. This vulnerability is documented as CVE-2026-116257. The attack can be executed remotely. Additionally, an exploit exists. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability, which was classified as critical, has been found in BillaBear up to 2025.01.03. Affected by this issue is the function processInstall of the file src/BillaBear/Controller/InstallController.php of the component Installation Handler. The manipulation with an unknown input leads to a missing authentication vulnerability. Using CWE to declare the problem leads to CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. Impacted is confidentiality, integrity, and availability.

The advisory is shared for download at gist.github.com. This vulnerability is handled as CVE-2026-116257. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.

The exploit is available at gist.github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way. By approaching the search of inurl:src/BillaBear/Controller/InstallController.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.3
VulDB Temp Score: 6.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Missing authentication
CWE: CWE-306 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Google Hack: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/25/2026 Advisory disclosed
10/25/2026 +0 days VulDB entry created
10/25/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: gist.github.com
Status: Confirmed

CVE: CVE-2026-116257 (🔒)
GCVE (CVE): GCVE-0-2026-116257
GCVE (VulDB): GCVE-100-426296
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 10/25/2026 18:35
Changes: 10/25/2026 18:35 (56)
Complete: 🔍
Submitter: hbynb
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #1009909: BillaBear master @ 3ac15eea19bfff1cdf60b93332b8cb9fe171d51 CWE-306 Missing Authentication for Critical Function (by hbynb)

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