CVE-2026-35573
CVE-2026-35573 is a critical-severity vulnerability in Churchcrm with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: Critical (CVSS 3.x base score 9.1)
- EPSS exploit prediction: 1% (51st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-19771
- Weakness: CWE-22
- Affected product: Churchcrm
- Published:
- Last modified:
Description
ChurchCRM is an open-source church management system. Prior to 6.5.3, a path traversal vulnerability in ChurchCRM's backup restore functionality allows authenticated administrators to upload arbitrary files and achieve remote code execution by overwriting Apache .htaccess configuration files. The vulnerability exists in src/ChurchCRM/Backup/RestoreJob.php. The $rawUploadedFile['name'] parameter is user-controlled and allows uploading files with arbitrary names to /var/www/html/tmp_attach/ChurchCRMBackups/. This vulnerability is fixed in 6.5.3.
Frequently asked questions
- What is CVE-2026-35573?
- ChurchCRM is an open-source church management system. Prior to 6.5.3, a path traversal vulnerability in ChurchCRM's backup restore functionality allows authenticated administrators to upload arbitrary files and achieve remote code execution by overwriting Apache .htaccess configuration files. The vulnerability exists in src/ChurchCRM/Backup/RestoreJob.php. The $rawUploadedFile['name'] parameter is user-controlled and allows uploading files with arbitrary names to /var/www/html/tmp_attach/ChurchCRMBackups/. This vulnerability is fixed in 6.5.3.
- How severe is CVE-2026-35573?
- CVE-2026-35573 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-35573 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-35573?
- CVE-2026-35573 affects Churchcrm. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-35573?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2026-35573 have an EU (EUVD) identifier?
- Yes. CVE-2026-35573 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19771.
- When was CVE-2026-35573 published?
- CVE-2026-35573 was published on 2026-04-07 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:churchcrm:churchcrm:*:*:*:*:*:*:*:*
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