CVE-2026-2241
CVE-2026-2241 is a low-severity vulnerability in Janet-lang Janet with a CVSS 3.x base score of 3.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: Low (CVSS 3.x base score 3.3)
- CVSS v2: 1.7
- CVSS v4: 1.9
- EPSS exploit prediction: 0% (7th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-6895
- Weakness: CWE-125
- Affected product: Janet-lang Janet
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-2241?
- 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.
- How severe is CVE-2026-2241?
- CVE-2026-2241 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
- Is CVE-2026-2241 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-2241?
- CVE-2026-2241 affects Janet-lang Janet. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-2241?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-2241 have an EU (EUVD) identifier?
- Yes. CVE-2026-2241 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6895.
- When was CVE-2026-2241 published?
- CVE-2026-2241 was published on 2026-02-09 and last updated on 2026-06-17.
References
- https://github.com/janet-lang/janet/
- https://github.com/janet-lang/janet/commit/0f285855f0e34f9183956be5f16e045f54626bff
- https://github.com/janet-lang/janet/issues/1701
- https://github.com/janet-lang/janet/issues/1701#event-4446770461
- https://github.com/oneafter/0123/blob/main/ja3/repro
- https://vuldb.com/?ctiid.344980
- https://vuldb.com/?id.344980
- https://vuldb.com/?submit.753156
Affected products (1)
- cpe:2.3:a:janet-lang:janet:*:*:*:*:*:*:*:*
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