Phreesoft PhreeBooks 5.2.3 Image Manager unrestricted upload

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Phreesoft PhreeBooks 5.2.3. This impacts an unknown function of the component Image Manager. The manipulation results in unrestricted upload. This vulnerability was named CVE-2021-47904. The attack may be performed from remote. In addition, an exploit is available. It looks like this entry received a duplicate CVE-2019-25647.

Detailsinfo

A vulnerability classified as critical has been found in Phreesoft PhreeBooks 5.2.3. Affected is an unknown code block of the component Image Manager. The manipulation with an unknown input leads to a unrestricted upload vulnerability. CWE is classifying the issue as CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

PhreeBooks 5.2.3 contains an authenticated file upload vulnerability in the Image Manager that allows remote code execution. Attackers can upload a malicious PHP web shell by exploiting unrestricted file type uploads to gain command execution on the server.

The weakness was presented by Kr0ff as 49524. The advisory is shared for download at exploit-db.com. This vulnerability is traded as CVE-2021-47904 since 01/18/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1608.002.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept.

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 databases at Exploit-DB (46645) and EUVD (EUVD-2026-4274). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.2

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (VulnCheck): 🔒

CVSSv2info

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

Exploitinginfo

Class: Unrestricted upload
CWE: CWE-434 / CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Exploit-DB: 🔒

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

01/18/2026 CVE reserved
01/23/2026 +5 days Advisory disclosed
01/23/2026 +0 days VulDB entry created
03/24/2026 +60 days VulDB entry last update

Sourcesinfo

Advisory: 49524
Researcher: Kr0ff
Status: Not defined

CVE: CVE-2021-47904 (🔒)
CVE Duplicate: 🔍
GCVE (CVE): GCVE-0-2021-47904
GCVE (VulDB): GCVE-100-342648
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 01/23/2026 18:29
Updated: 03/24/2026 13:52
Changes: 01/23/2026 18:29 (80), 01/24/2026 09:56 (1), 03/24/2026 13:52 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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