CVE-2023-5289Public exploitNetwork attack vector

Service interruption via unlimited account-resource creation

Published Sep 29, 2023 · Updated Sep 23, 2024

Resource exhaustion in IKUS Software Rdiffweb before 2.8.4 allows remote authenticated users to interrupt service via repeated POST requests. The user, access-token, and SSH-key controllers accept repeated creation requests without applying the existing CherryPy rate-limit tool. A valid account is required; repeated creation consumes persistent resources and can impair service availability while altering account-related records.

CVSS severity8.8
High
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in IKUS Software Rdiffweb before 2.8.4 allows remote authenticated users to interrupt service via repeated POST requests. The user, access-token, and SSH-key controllers accept repeated creation requests without applying the existing CherryPy rate-limit tool. A valid account is required; repeated creation consumes persistent resources and can impair service availability while altering account-related records.

The record

CVE
CVE-2023-5289
Published
Sep 29, 2023
Updated
Sep 23, 2024
Vendor
IKUS Software
Product
Rdiffweb
Classifications
CWE-770, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <2.8.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IKUS Software · Rdiffwebversion=unspecified <2.8.4

Published CVSS scores

7.1huntr.devCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
8.8NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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