CVE-2026-34243 | njzjz wenxian up to 0.3.1 BIBTEX File Parser issue_comment.body command injection (GHSA-r4fj-r33x-8v88)

VDB-354459 · CVE-2026-34243 · GHSA-R4FJ-R33X-8V88 NJZJZ WENXIAN UP TO 0.3.1 BIBTEX FILE PARSER ISSUE_COMMENT.BODY COMMAND INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 8.4 $0-$5k 1.31+ Summaryinfo A vulnerability was found in njzjz wenxian up to 0.3.1. It has been rated as critical. The affected element is an unknown function of the component BIBTEX File Parser. Performing a manipulation of the argument issue_comment.body results in command injection. This vulnerability is cataloged as CVE-2026-34243. It is possible to initiate the attack remotely. There is no exploit available. To fix this issue, it is recommended to deploy a patch. Detailsinfo A vulnerability, which was classified as critical, was found in njzjz wenxian up to 0.3.1. This affects an unknown function of the component BIBTEX File Parser. The manipulation of the argument issue_comment.body with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is: wenxian is a tool to generate BIBTEX files from given identifiers (DOI, PMID, arXiv ID, or paper title). In versions 0.3.1 and prior, a GitHub Actions workflow uses untrusted user input from issue_comment.body directly inside a shell command, allowing potential command injection and arbitrary code execution on the runner. At time of publication, there are no publicly available patches. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-34243 since 03/26/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK. Applying a patch is able to eliminate this problem. Productinfo Vendor njzjz Name wenxian Version 0.3.0 0.3.1 Website Product: https://github.com/njzjz/wenxian/ CPE 2.3info 🔒 🔒 CPE 2.2info 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 8.5 VulDB Meta Temp Score: 8.4 VulDB Base Score: 7.3 VulDB Temp Score: 7.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 9.8 CNA Vector (GitHub_M): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Command injection CWE: CWE-77 / CWE-74 / CWE-707 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined 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: Patch Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/26/2026 CVE reserved 03/31/2026 +4 days Advisory disclosed 03/31/2026 +0 days VulDB entry created 03/31/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-r4fj-r33x-8v88 Status: Confirmed CVE: CVE-2026-34243 (🔒) GCVE (CVE): GCVE-0-2026-34243 GCVE (VulDB): GCVE-100-354459 Entryinfo Created: 03/31/2026 20:02 Changes: 03/31/2026 20:02 (65) Complete: 🔍 Cache ID: 99:ECB:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸