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Vulnerability record · CVE-2026-23946 · published 22 January 2026

CVE-2026-23946: Tendenci code injection vulnerability

TTendenci · Tendenci

Tendenci is an open source content management system built for non-profits, associations and cause-based sites. Versions 15.3.11 and below include a critical deserialization vulnerability in the Helpdesk module (which is not enabled by default). This vulnerability allows Remote Code Execution (RCE) by an authenticated user with staff security level due to using Python's pickle module in helpdesk /reports/. The original CVE-2020-14942 was incompletely patched. While ticket_list() was fixed to use safe JSON deserialization, the run_report() function still uses unsafe pickle.loads(). The impact is limited to the permissions of the user running the application, typically www-data, which generally lacks write (except for upload directories) and execute permissions. This issue has been fixed in version 15.3.12.

6.8 CVSS 3.1 Medium EPSS 0.85% · top 43.5% CWE-94 · Code injectionCWE-502 · Deserialization of untrusted data
6.8CVSS 3.1 base score
0.85%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

Tendenci is an open source content management system built for non-profits, associations and cause-based sites. Versions 15.3.11 and below include a critical deserialization vulnerability in the Helpdesk module (which is not enabled by default). This vulnerability allows Remote Code Execution (RCE) by an authenticated user with staff security level due to using Python's pickle module in helpdesk /reports/. The original CVE-2020-14942 was incompletely patched. While ticket_list() was fixed to use safe JSON deserialization, the run_report() function still uses unsafe pickle.loads(). The impact is limited to the permissions of the user running the application, typically www-data, which generally lacks write (except for upload directories) and execute permissions. This issue has been fixed in version 15.3.12.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://docs.python.org/3/library/pickle.html#restricting-globals Not Applicable
https://github.com/advisories/GHSA-jqmc-fxxp-r589 Not Applicable
https://github.com/tendenci/tendenci/commit/23d9fd85ab7654e9c83cfc86cb4175c0bd7a77f1 Patch
https://github.com/tendenci/tendenci/commit/2ff0a457614944a1b417081c543ea4c5bb95d636 Patch
https://github.com/tendenci/tendenci/commit/63e1b84a5b163466d1d8d811d35e7021a7ca0d0e Patch
https://github.com/tendenci/tendenci/issues/867 ExploitIssue TrackingPatchVendor Advisory
https://github.com/tendenci/tendenci/releases/tag/v15.3.12 Release Notes
https://github.com/tendenci/tendenci/security/advisories/GHSA-339m-4qw5-j2g3 MitigationVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-23946), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.