Chouby Polylang Plugin up to 3.7.3 on WordPress deserialization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Chouby Polylang Plugin up to 3.7.3 on WordPress. It has been classified as critical. Impacted is an unknown function. The manipulation leads to deserialization. This vulnerability is uniquely identified as CVE-2025-64353. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Chouby Polylang Plugin up to 3.7.3 on WordPress. This issue affects an unknown code block. The manipulation with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Deserialization of Untrusted Data vulnerability in Chouby Polylang polylang allows Object Injection.This issue affects Polylang: from n/a through <= 3.7.3.

The weakness was disclosed by Phat Rio. The advisory is shared at vdp.patchstack.com. The identification of this vulnerability is CVE-2025-64353 since 10/31/2025. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/21/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-37339). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.3
VulDB Temp Score: 6.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/31/2025 Advisory disclosed
10/31/2025 +0 days CVE reserved
10/31/2025 +0 days VulDB entry created
01/21/2026 +82 days VulDB entry last update

Sourcesinfo

Advisory: vdp.patchstack.com
Researcher: Phat Rio
Status: Not defined

CVE: CVE-2025-64353 (🔒)
GCVE (CVE): GCVE-0-2025-64353
GCVE (VulDB): GCVE-100-330797
EUVD: 🔒

Entryinfo

Created: 10/31/2025 13:41
Updated: 01/21/2026 03:16
Changes: 10/31/2025 13:41 (54), 11/01/2025 16:23 (1), 01/21/2026 03:16 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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