CVE-2026-34745

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Source
https://cve.org/CVERecord?id=CVE-2026-34745
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34745.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-34745
Aliases
  • GHSA-fvvp-rj8g-c7gc
Published
2026-04-02T18:38:17Z
Modified
2026-10-20T12:06:27Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
Summary
Unauthenticated Path Traversal Arbitrary File Write in /api/uploadChunked/public
Details

Fireshare facilitates self-hosted media and link sharing. Prior to version 1.5.3, the fix for CVE-2026-33645 was applied to the authenticated /api/uploadChunked endpoint but was not applied to the unauthenticated /api/uploadChunked/public endpoint in the same file (app/server/fireshare/api.py). An unauthenticated attacker can exploit the checkSum parameter to write arbitrary files with attacker-controlled content to any writable path on the server filesystem. This issue has been patched in version 1.5.3.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-22"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34745.json"
}
References

Affected packages

Git / github.com/fireshare-app/fireshare

Affected ranges

Type
GIT
Repo
https://github.com/fireshare-app/fireshare
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
b76915607924756e6fa1a5f6c8823c38d611fb24
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "1.5.3"
        },
        {
            "cpe":  "cpe:2.3:a:shaneisrael:fireshare:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.5.3"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "range":  [
                {
                    "fixed":  "b76915607924756e6fa1a5f6c8823c38d611fb24"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v1.5.3",
            "range":  [
                {
                    "fixed":  "b76915607924756e6fa1a5f6c8823c38d611fb24"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v1.*
v1.0.0
v1.1.1
v1.1.2
v1.2.0
v1.2.1
v1.2.10
v1.2.11
v1.2.12
v1.2.13
v1.2.14
v1.2.15
v1.2.16
v1.2.17
v1.2.18
v1.2.19
v1.2.2
v1.2.20
v1.2.21
v1.2.22
v1.2.23
v1.2.24
v1.2.25
v1.2.26
v1.2.27
v1.2.28
v1.2.3
v1.2.30
v1.2.4
v1.2.5
v1.2.6
v1.2.7
v1.2.8
v1.2.9
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.4.0
v1.4.1
v1.4.2
v1.5.0
v1.5.1
v1.5.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34745.json"