CVE Explorer
CVE-2026-34745
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 versi
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"fireshare","vendor":"ShaneIsrael","versions":[{"status":"affected","version":"< 1.5.3"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:7e7dafefcd3e16f3f406845f793f597647b0877784f69a58a367a433dbfca560 · sha256:99d19da614aa83bf… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:7e7dafefcd3e16f3f406845f793f597647b0877784f69a58a367a433dbfca560 · sha256:99d19da614aa83bf… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:7e7dafefcd3e16f3f406845f793f597647b0877784f69a58a367a433dbfca560 · sha256:99d19da614aa83bf… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"name":"https://github.com/ShaneIsrael/fireshare/commit/b76915607924756e6fa1a5f6c8823c38d611fb24","tags":["x_refsource_MISC"],"url":"https://github.com/ShaneIsrael/fireshare/commit/b76915607924756e6fa1a5f6c8823c38d611fb24"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:7e7dafefcd3e16f3f406845f793f597647b0877784f69a58a367a433dbfca560 · sha256:99d19da614aa83bf… · /containers/cna/references/2
{"name":"https://github.com/ShaneIsrael/fireshare/pull/520","tags":["x_refsource_MISC"],"url":"https://github.com/ShaneIsrael/fireshare/pull/520"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:7e7dafefcd3e16f3f406845f793f597647b0877784f69a58a367a433dbfca560 · sha256:99d19da614aa83bf… · /containers/cna/references/1
{"name":"https://github.com/ShaneIsrael/fireshare/releases/tag/v1.5.3","tags":["x_refsource_MISC"],"url":"https://github.com/ShaneIsrael/fireshare/releases/tag/v1.5.3"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:7e7dafefcd3e16f3f406845f793f597647b0877784f69a58a367a433dbfca560 · sha256:99d19da614aa83bf… · /containers/cna/references/3
{"name":"https://github.com/ShaneIsrael/fireshare/security/advisories/GHSA-fvvp-rj8g-c7gc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/ShaneIsrael/fireshare/security/advisories/GHSA-fvvp-rj8g-c7gc"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:7e7dafefcd3e16f3f406845f793f597647b0877784f69a58a367a433dbfca560 · sha256:99d19da614aa83bf… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.