CVE-2022-28921: A Cross-Site Request Forgery (CSRF) vulnerability discovered in BlogEngine.Net v3.3.8.0 allows unauthenticated

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MEDIUM 6.5DOWNGRADE

CVE-2022-28921 is a medium-severity flaw (CVSS 6.5) affecting blogengine.net. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Cross-Site Request Forgery (CSRF) vulnerability discovered in BlogEngine.Net v3.3.8.0 allows unauthenticated attackers to read arbitrary files on the hosting web server.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.7% (top 45%)
CISA exploited list	No
Weakness	CWE-352
Published	2022-05-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: blogengine

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-05-18 18:15 UTCPublished CVE record published
2026-06-17 04:39 UTCUpdated Record last modified

blogengine blogengine.net DOWNGRADE

Affected: 3.3.8.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.3.8.0

1. Check installed version

apt-cache policy blogengine.net || rpm -q blogengine.net || blogengine.net --version

2. No fixed release: DOWNGRADE to a release before 3.3.8.0 (Debian / Ubuntu)

apt-cache madison blogengine.net sudo apt install blogengine.net=<VERSION_BEFORE_3.3.8.0> sudo apt-mark hold blogengine.net

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list blogengine.net sudo dnf downgrade blogengine.net-<VERSION_BEFORE_3.3.8.0> sudo dnf versionlock add blogengine.net

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-28921?

blogengine.net: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-28921 being exploited?

CVE-2022-28921 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-28921 affect?

CVE-2022-28921 affects blogengine.net. Severity is medium (CVSS 6.5). A Cross-Site Request Forgery (CSRF) vulnerability discovered in BlogEngine.Net v3.3.8.0 allows unauthenticated attackers to read arbitrary files on the hosting web server.

How urgent is CVE-2022-28921?

Priority 41/100. Public exploit reference

Related CVEs

CVE-2023-33405 MEDIUM 6.1 UPGRADE Blogengine.net 3.3.8.0 and earlier is vulnerable to Open Redirect.
CVE-2023-33404 CRITICAL 9.8 UPGRADE An Unrestricted Upload vulnerability, due to insufficient validation on UploadControlled.cs file, in BlogEngin
CVE-2023-22858 MEDIUM 5.3 DOWNGRADE An Improper Access Control vulnerability in BlogEngine.NET 3.3.8.0, allows unauthenticated visitors to access
CVE-2023-22857 HIGH 8.5 DOWNGRADE A stored Cross-site Scripting (XSS) vulnerability in BlogEngine.NET 3.3.8.0, allows injection of arbitrary Jav
CVE-2023-22856 HIGH 8.5 DOWNGRADE A stored Cross-site Scripting (XSS) vulnerability in BlogEngine.NET 3.3.8.0, allows injection of arbitrary Jav

References

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