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FreeBSD : jackson-databind -- denial of service (7b3ea5d6-cf3d-11f1-a655-3497f65b111b)

high Nessus Plugin ID 370452

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 7b3ea5d6-cf3d-11f1-a655-3497f65b111b advisory.

 The Jackson project reports:
 CVE-2026-91776: TypeDeserializerBase caches the resolved deserializer under the raw, attacker supplied type id. With name based polymorphism and a fallback, every unrecognized type id adds an entry and the cache grows without bound.
 CVE-2026-91777: forward reference completion for JsonIdentityInfo object ids scans the pending reference accumulator for every resolved id, which is quadratic in the number of references.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?93a14b81

http://www.nessus.org/u?f77d7393

Plugin Details

Severity: High

ID: 370452

File Name: freebsd_pkg_7b3ea5d6cf3d11f1a6553497f65b111b.nasl

Version: 1.1

Type: Local

Published: 10/22/2026

Updated: 10/22/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.18

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-91777

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:jackson-databind

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 10/22/2026

Vulnerability Publication Date: 9/23/2026

Reference Information

CVE: CVE-2026-91776, CVE-2026-91777