CVE-2026-30579 json
File Thingie 2.5.7 is vulnerable to Cross Site Scripting (XSS).
published 7mo ago modified 4mo ago also EUVD-2026-13734
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 8%
- public exploits
- 0
- none known
Summary
File Thingie 2.5.7 is vulnerable to Cross Site Scripting (XSS). A malicious user can leverage the "upload file" functionality to upload a file with a crafted file name used to trigger a Javascript payload.
Is CVE-2026-30579 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7mo ago
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/leefish/filethingie
product
-
github.com
/SpeWnz/Vulnerability-Research/tree/main/CVE-2026-30579
third-party-advisory
Sources
- CVE List CVE-2026-30579
- NVD CVE-2026-30579
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.