Hermes WebUI < 0.51.270 Resource Exhaustion via passkey/options
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.6%
exploitation probability
0.6%top 55% of all CVEs
observed exploitation
nono source reports it
Hermes WebUI before version 0.51.270 contains a resource exhaustion vulnerability that allows unauthenticated remote attackers to degrade service availability by repeatedly calling the passkey options endpoint without completing assertion. Attackers can send unlimited POST requests to the authentication endpoint, causing unbounded growth of the challenge store file and excessive CPU and disk I/O through repeated JSON file rewrites.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Affected products
nesquena · hermes-webuiReferences
https://github.com/nesquena/hermes-webui/commit/58528a4d88b0fa4f7b822e31d6051c669769bd3bhttps://github.com/nesquena/hermes-webui/pull/3624https://github.com/nesquena/hermes-webui/pull/3674https://github.com/nesquena/hermes-webui/releases/tag/v0.51.270https://www.vulncheck.com/advisories/hermes-webui-resource-exhaustion-via-passkey-options