CVE-2025-54796
published 2025-08-02CVE-2025-54796: Copyparty is a portable file server. Versions prior to 1.18.9, the filter parameter for the "Recent Uploads" page allows arbitrary RegExes. If this feature is…
PriorityP344high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.38%
29.9th percentile
Copyparty is a portable file server. Versions prior to 1.18.9, the filter parameter for the "Recent Uploads" page allows arbitrary RegExes. If this feature is enabled (which is the default), an attacker can craft a filter which deadlocks the server. This is fixed in version 1.18.9.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| 9001 | copyparty | < 1.18.9 | 1.18.9 |
| 9001 | copyparty | >= 0 < 1.18.9 | 1.18.9 |
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GHSA
copyparty allows Regex Denial of Service (ReDoS) in the upload listing
ghsa·2025-08-04
CVE-2025-54796 [HIGH] CWE-1333 copyparty allows Regex Denial of Service (ReDoS) in the upload listing
copyparty allows Regex Denial of Service (ReDoS) in the upload listing
### Summary
The `filter` parameter for the "Recent uploads" page allows arbitrary Regexes. If this feature is enabled (which is the default), an attacker can craft a filter which deadlocks the server.
### PoC
`https://127.0.0.1:3923/?ru&filter=(.+)+x`
### Impact
The server becomes fully inaccessible for a long time.
OSV
copyparty allows Regex Denial of Service (ReDoS) in the upload listing
osv·2025-08-04
CVE-2025-54796 [HIGH] copyparty allows Regex Denial of Service (ReDoS) in the upload listing
copyparty allows Regex Denial of Service (ReDoS) in the upload listing
### Summary
The `filter` parameter for the "Recent uploads" page allows arbitrary Regexes. If this feature is enabled (which is the default), an attacker can craft a filter which deadlocks the server.
### PoC
`https://127.0.0.1:3923/?ru&filter=(.+)+x`
### Impact
The server becomes fully inaccessible for a long time.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-08-02
Published