What is CVE-2023-4138?

CVE-2023-4138 is a medium-severity vulnerability in Ikus060 Ikus060/rdiffweb, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2023-08-03.

How severe is CVE-2023-4138?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Ikus060 Ikus060/rdiffweb

CVE-2023-4138

Allocation of Resources Without Limits or Throttling in GitHub repository ikus060/rdiffweb prior to 2.8.0.

Published 2023-08-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.004 (36.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Ikus060 Ikus060/rdiffweb — versions unspecified
Ikus-Soft Rdiffweb

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

huntr.dev/bounties/1b1fa915-d588-4bb1-9e82-6a6be79befed (Exploit, Third Party Advisory)
github.com/ikus060/rdiffweb/commit/feef0d7b11d86aed29bf98c21526088117964d85 (Patch)

Frequently asked questions

What is CVE-2023-4138?: CVE-2023-4138 is a medium-severity vulnerability in Ikus060 Ikus060/rdiffweb, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2023-08-03.
How severe is CVE-2023-4138?: Medium severity. CVSS v3 base score is 6.5 out of 10.