CVE-2020-18998: Cross Site Scripting (XSS) in Blog_mini v1.0 allows remote attackers to execute arbitrary code via the compone

This month

MEDIUM 6.1DOWNGRADE

CVE-2020-18998 is a medium-severity flaw (CVSS 6.1) affecting blog mini. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Scripting (XSS) in Blog_mini v1.0 allows remote attackers to execute arbitrary code via the component '/admin/custom/blog-plugin/add'.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-08-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: blog mini project

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

Am I affected?

Timeline

2021-08-27 19:15 UTCPublished CVE record published
2026-06-17 02:59 UTCUpdated Record last modified

blog mini project blog mini DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy blog-mini || rpm -q blog-mini || blog-mini --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison blog-mini sudo apt install blog-mini=<VERSION_BEFORE_1.0> sudo apt-mark hold blog-mini

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

dnf --showduplicates list blog-mini sudo dnf downgrade blog-mini-<VERSION_BEFORE_1.0> sudo dnf versionlock add blog-mini

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-2020-18998?

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

Is CVE-2020-18998 being exploited?

CVE-2020-18998 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-2020-18998 affect?

CVE-2020-18998 affects blog mini. Severity is medium (CVSS 6.1). Cross Site Scripting (XSS) in Blog_mini v1.0 allows remote attackers to execute arbitrary code via the component '/admin/custom/blog-plugin/add'.

How urgent is CVE-2020-18998?

Priority 43/100. Public exploit reference

Related CVEs

CVE-2020-18999 MEDIUM 6.1 DOWNGRADE Cross Site Scripting (XSS) in Blog_mini v1.0 allows remote attackers to execute arbitrary code via the compone

References

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