Description
yt-dlp-web-ui through 4.0.0 contains a NULL pointer dereference vulnerability in the Service.Formats JSON-RPC method that allows remote unauthenticated attackers to crash the server. Attackers can send a single request with a url value like --version, causing invalid yt-dlp JSON output and an unrecovered panic that terminates the process.
References5
- github.com/marcopiovanello/yt-dlp-web-ui
- github.com/marcopiovanello/yt-dlp-web-ui/blob/v4.0.0/server/for…
- github.com/marcopiovanello/yt-dlp-web-ui/blob/v4.0.0/server/rpc…
- github.com/vazzzy071-crypto/security-advisories/blob/main/advis…
- www.vulncheck.com/advisories/yt-dlp-web-ui-through-4.0.0-null-p…
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 4.0
-
8.7
HIGH
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 1% percentile: 47 · as of 11 November 2026
- CWE
- CWE-476
Could this be exploited in your environment?
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