CVE-2026-71294 | BDVDB-2026-355681 Detail

CotontiCotonti

Description#

Cotonti CMS's Comments plugin deserializes user-supplied data without restricting the classes that may be instantiated. In plugins/comments/controllers/actions/CreateAction.php, a POST parameter obtained via (trim-only sanitization) is passed to with no restriction, reachable by any member with write access to comments (the default setting in plugins/comments/comments.setup.php).

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact low, availability impact low. Attack vector: network.

Weaknesses#

CWE-502 Deserialization of Untrusted Data

References#

Exploit#

No public exploit known

History#

Version 12026-08-05Record published in the CVE List.
Version 22026-08-10Most recent update recorded in the CVE List.

Published

Published: 2026-08-05
Last modified: 2026-08-10

Vendor information

Vendor: Cotonti
Product: Cotonti

All Cotonti vulnerabilities

Score

7.7 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 32.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Insecure Deserialization

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

No version data in the source record.

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.7 High

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	Low
Availability	Low

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).