CVE-2023-33405Public exploitNetwork attack vector

User redirection via unvalidated date parameters

Published Jun 21, 2023 · Updated Dec 6, 2024

Open redirect in BlogEngine.NET 3.3.8.0 and earlier allows remote attackers to redirect users to attacker-controlled sites. The default.aspx Redirect function accepts unvalidated year and month query values, builds the rewrite target, and places it in an HTTP redirect. Exploitation requires a user to follow a crafted link, after which the browser leaves the trusted site for an attacker-controlled URL.

CVSS severity6.1
Medium
EPSS probability31.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in BlogEngine.NET 3.3.8.0 and earlier allows remote attackers to redirect users to attacker-controlled sites. The default.aspx Redirect function accepts unvalidated year and month query values, builds the rewrite target, and places it in an HTTP redirect. Exploitation requires a user to follow a crafted link, after which the browser leaves the trusted site for an attacker-controlled URL.

The record

CVE
CVE-2023-33405
Published
Jun 21, 2023
Updated
Dec 6, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-601
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 6, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')

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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