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HIGH

CVE-2026-103471

CVSS v3

7.5

HIGH

EPSS Score

0.8 %

exploit probability, as of 2026-10-01

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

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.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-09-30
Last Modified
2026-09-30

Frequently asked questions

What is CVE-2026-103471?

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.

Is CVE-2026-103471 actively exploited?

Active exploitation of CVE-2026-103471 has not been confirmed. Its EPSS score was 0.8% on 2026-10-01, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-103471?

CVE-2026-103471 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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