TI-2024-24429 Aliases CVE-2024-36858 GHSA-qfjh-mvq6-c5p8

An arbitrary file upload vulnerability in the /v1/app/writeFileSync interface of Jan…

HIGH 82CWE-434Published 2024-06-04 · Updated 2025-02-13

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-434.

Summary

An arbitrary file upload vulnerability in the /v1/app/writeFileSync interface of Jan v0.4.12 allows attackers to execute arbitrary code via uploading a crafted file.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.03035 87th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA
—	@janhq/core (npm)	up to 0.1.11	—	No fix listed	GHSA-qfjh-mvq6-c5p8

— Vendor— Affected all versions Fixed in — No fix listed CNA
@janhq/core (npm) Vendor— Affected up to 0.1.11 Fixed in — No fix listed GHSA-qfjh-mvq6-c5p8

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:homebrew:jan:0.4.12:::::::*	0.4.12	Vulnerable	Homebrew

cpe:2.3:a:homebrew:jan:0.4.12:*:*:*:*:*:*:* Versions 0.4.12 Vulnerable ·Homebrew

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2024-36858
2026-10-03 Alias added: GHSA-qfjh-mvq6-c5p8

References

Exploit 1

https://github.com/HackAllSec/CVEs/tree/main/Jan%20Arbitrary%20File%20Upload%20vulnerability

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2024-36858

Other 2

TI-2024-24788 An arbitrary file upload vulnerability in the /v1/app/appendFileSync interface of Jan… CVSS 3.1CRITICAL 9.8
TI-2024-24428 Jan v0.4.12 was discovered to contain an arbitrary file read vulnerability via the /v1/app/readFileSync interface. CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences