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Fedora 44 mongo-c-driver Update Security Advisory FEDORA-2026

Linuxsecurity •LinuxSecurity Advisories • September 13, 2026

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mongo-c-driver is a client library written in C for MongoDB.

libmongoc 1.30.9 Fixes Fix OCSP error handling. CVE-2026-84964 Fix unsafe casts during JSON parsing. CVE-2026-84965 Fix possible unsafe truncation when logging base64. CVE-2026-84969 Fix unsafe calls to bson_next_power_of_two. CVE-2026-84963

* Fri Sep 4 2026 Remi Collet - 1.30.9-1 - update to 1.30.9

Fedora Update Notification FEDORA-2026-8ed63cce6b 2026-09-13 17:54:09.259017+00:00 Name : mongo-c-driver Product : Fedora 44 Version : 1.30.9 Release : 1.fc44 URL : Summary : Client library written in C for MongoDB Description : mongo-c-driver is a client library written in C for MongoDB.

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-8ed63cce6b' at the command line. For more information, refer to the dnf documentation available at

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Critical Vulnerabilities in MongoDB Drivers Affect Fedora Users Recent updates for Fedora 45 and earlier versions address critical vulnerabilities in MongoDB drivers. The php-pecl-mongodb2 and mongo-c-driver libraries have multiple CVEs, including CVE-2026-84964, CVE-2026-84965, CVE-2026-84968, CVE-2026-84969, and CVE-2026-84963, all published on September 3, 2026. These vulnerabilities include issues like out-of-bounds reads, unsafe casts, and OCSP parsing errors, which could lead to remote code execution or denial of service. Affected systems include Fedora 43, 44, and 45. Users are advised to update their systems immediately using the provided DNF commands. The updates were released on September 13, 2026, following the discovery of these vulnerabilities. The severity of these issues necessitates prompt action from system administrators. 7 sources 61

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Fedora 44 mongo-c-driver Update Security Advisory FEDORA-2026

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Extracted Entities

CVEs (4)

CWE Weaknesses (1)

Platforms (2)