CVE-2026-103471
restbed through 5.0.0 Denial of Service via Unbounded Header Buffering
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
restbed through 5.0.0 buffers HTTP request headers without enforcing a maximum size limit, allowing remote unauthenticated attackers to exhaust server memory. Attackers can open TCP connections and stream bytes indefinitely without sending the header delimiter, forcing the server to allocate unbounded heap memory until the process is killed.
| CWE | CWE-770 |
| Vendor | corvusoft |
| Product | restbed |
| Published | Sep 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Corvusoft / restbed
0 ≤ 5.0.0
References
github.com: https://github.com/Corvusoft/restbed/issues/558 github.com: https://github.com/Corvusoft/restbed github.com: https://github.com/Corvusoft/restbed/blob/e1227a297ce6d4e9f78222456507b29bb8ab77e9/src/corvusoft/restbed/detail/service_impl.cpp#L554 github.com: https://github.com/Corvusoft/restbed/blob/e1227a297ce6d4e9f78222456507b29bb8ab77e9/src/corvusoft/restbed/session.cpp#L200 vulncheck.com: https://www.vulncheck.com/advisories/restbed-through-5.0.0-denial-of-service-via-unbounded-header-buffering
Credits
MJ DHURGESH