What is the CVSS score of CVE-2026-26059?

CVE-2026-26059 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Churchcrm are affected by CVE-2026-26059?

Organizations using versions should be aware of moderate risk from CVE-2026-26059, a cross-site scripting vulnerability rated CVSS 5.4.

Is there a public PoC exploit available for CVE-2026-26059?

Yes, a public proof-of-concept exploit is available for CVE-2026-26059. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-26059?

Within 30 days: Identify affected systems running versions and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Churchcrm CVE-2026-26059

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-02-19 security-advisories@github.com

XSS Churchcrm

5.4

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.4 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:03 vuln.today

PoC Detected

Feb 20, 2026 - 19:07 vuln.today

Public exploit code

CVE Published

Feb 19, 2026 - 19:22 nvd

MEDIUM 5.4

DescriptionGitHub Advisory

ChurchCRM is an open-source church management system. In versions prior to 6.8.2, it was possible for an authenticated user with permission to edit groups to store a JavaScript payload that would execute when the group was viewed in the Group View. Version 6.8.2 fixes this issue.

AnalysisAI

Stored cross-site scripting in ChurchCRM versions before 6.8.2 allows authenticated users with group editing permissions to inject malicious JavaScript that executes when other users view affected groups. Public exploit code exists for this vulnerability, and no patch is currently available. The attack requires user interaction and can result in session hijacking or unauthorized actions performed on behalf of affected users.

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Churchcrm. ChurchCRM is an open-source church management system. In versions prior to 6.8.2, it was possible for an authenticated user with permission to edit groups to store a JavaScript payload that would execute when the group was viewed in the Group View. Version 6.8.2 fixes this issue.

RemediationAI

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.