CVE-2026-2241— janet-lang janet os.c os_strftime out-of-bounds
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I. Basic Information for CVE-2026-2241
Vulnerability Information
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Vulnerability Title
janet-lang janet os.c os_strftime out-of-bounds
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was found in janet-lang janet up to 1.40.1. This affects the function os_strftime of the file src/core/os.c. Performing a manipulation results in out-of-bounds read. The attack must be initiated from a local position. The exploit has been made public and could be used. The patch is named 0f285855f0e34f9183956be5f16e045f54626bff. To fix this issue, it is recommended to deploy a patch.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
Janet 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Janet是Janet Language开源的一种函数式和命令式编程语言和字节码解释器。 Janet 1.40.1及之前版本存在缓冲区错误漏洞，该漏洞源于函数os_strftime存在越界读取，可能导致信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| janet-lang | janet | 1.40.0 | - |
II. Public POCs for CVE-2026-2241
| # | POC Description | Source Link | Shenlong Link |
|---|
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- Submit #753156: janet-lang janet c43e066 Heap-based Buffer Overflowthird-party-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-2241
Same Patch Batch · janet-lang · 2026-02-09 · 3 CVEs total
| CVE-2026-2240 | 3.3 LOW | janet-lang janet compile.c janetc_pop_funcdef out-of-bounds |
| CVE-2026-2242 | 3.3 LOW | janet-lang janet specials.c janetc_if out-of-bounds |
IV. Related Vulnerabilities
Same weakness: CWE-125
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Out-of-bounds read in urldecode() on NetBSD - CVE-2026-8186
Open5GS NF client.c ogs_sbi_client_send_via_scp_or_sepp out- - CVE-2026-3508
ASUS System Control Interface 缓冲区错误漏洞
V. Comments for CVE-2026-2241
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