VDB-349779 · CVE-2026-3813 · IE8R2F

opencc JFlow up to 5badc00db382d7cb82dad231e6a866b18e0addfe WF_CCForm.java Calculate injection

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.3	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in opencc JFlow up to 5badc00db382d7cb82dad231e6a866b18e0addfe and classified as problematic. Affected by this issue is the function Calculate of the file src/main/java/bp/wf/httphandler/WF_CCForm.java. Performing a manipulation results in injection. This vulnerability is cataloged as CVE-2026-3813. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability, which was classified as problematic, was found in opencc JFlow up to 5badc00db382d7cb82dad231e6a866b18e0addfe. This affects the function Calculate of the file src/main/java/bp/wf/httphandler/WF_CCForm.java. The manipulation with an unknown input leads to a injection vulnerability. CWE is classifying the issue as CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability.

It is possible to read the advisory at gitee.com. This vulnerability is uniquely identified as CVE-2026-3813. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details and a public exploit are known. The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

The exploit is shared for download at gitee.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.

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-2026-10316). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

opencc

Name

JFlow

Version

5badc00db382d7cb82dad231e6a866b18e0addfe

Website

Product: https://gitee.com/opencc/JFlow/

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: 7.5
VulDB Meta Temp Score: 7.3

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

NVD Base Score: 9.8
NVD Vector: 🔒

CNA Base Score: 6.3
CNA Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Injection
CWE: CWE-74 / CWE-707 / CWE-20
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: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/08/2026 Advisory disclosed
03/08/2026 +0 days VulDB entry created
03/15/2026 +7 days VulDB entry last update

Sourcesinfo

Product: gitee.com

Advisory: IE8R2F
Status: Not defined

CVE: CVE-2026-3813 (🔒)
GCVE (CVE): GCVE-0-2026-3813
GCVE (VulDB): GCVE-100-349779
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/08/2026 17:36
Updated: 03/15/2026 19:40
Changes: 03/08/2026 17:36 (58), 03/09/2026 11:37 (30), 03/09/2026 13:13 (2), 03/15/2026 19:40 (12)
Complete: 🔍
Submitter: MaoQiu
Cache ID: 216:EA0:103

Submitinfo

Accepted

Submit #769112: https://gitee.com/opencc/JFlow JFlow latest version Remote Code Execution (by MaoQiu)