SB2026060233 - Multiple vulnerabilities in Bitbucket Data Center

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Main Vulnerability Database SB2026060233

SB2026060233 - Multiple vulnerabilities in Bitbucket Data Center

Published: June 2, 2026

Security Bulletin ID SB2026060233
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Prototype pollution (CVE-ID: CVE-2024-45801)

CWE-ID: CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes (\'Prototype Pollution\')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to execute arbitrary JavaScript code.

The vulnerability exists due to improper input validation. A remote attacker can pass specially crafted input to the application and perform prototype pollution, which can result in XSS attack.


2) Input validation error (CVE-ID: CVE-2026-33750)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in sequence generation in expand() when parsing a brace pattern with a zero step value. A remote attacker can supply a specially crafted pattern to cause a denial of service.

User interaction is required to process the crafted input.


Remediation

Install update from vendor's website.

References