01 Record
CVE-2026-34745
Unauthenticated Path Traversal Arbitrary File Write in /api/uploadChunked/public
CriticalPUBLISHEDCNA: GitHub_M
CNA base score9.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
02 Description
Unauthenticated Path Traversal Arbitrary File Write in /api/uploadChunked/public
03 Exploitation and scoring
- Exploitation
- Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
- SSVC decision
- ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.62% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 49.4% of scored records. A rank, not a probability.
- NVD base score
- 9.1 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-07-24.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-04-02 18:38Z6 MO AGO
- Last updated
- 2026-04-02 19:15Z6 MO AGO
- Reserved
- 2026-03-30
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.1)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
- Weaknesses
- CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
- Data version
- 5.2
- Document digest
- 99d19da614aa83bfcd3be8a65aa1ad04ad0877b92b79d28e87c11b40984e1369
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comhttps://github.com/ShaneIsrael/fireshare/security/advisories/GHSA-fvvp-rj8g-c7gc
- github.comhttps://github.com/ShaneIsrael/fireshare/pull/520
- github.comhttps://github.com/ShaneIsrael/fireshare/commit/b76915607924756e6fa1a5f6c8823c38d611fb24
- github.comhttps://github.com/ShaneIsrael/fireshare/releases/tag/v1.5.3