CVE-2021-28000: A persistent cross-site scripting vulnerability was discovered in Local Services Search Engine Management Syst

Routine

MEDIUM 4.8DOWNGRADE

CVE-2021-28000 is a medium-severity flaw (CVSS 4.8) affecting local services search engine management system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A persistent cross-site scripting vulnerability was discovered in Local Services Search Engine Management System Project 1.0 which allows remote attackers to execute arbitrary code via crafted payloads entered into the Name and Address fields.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.9% (top 39%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-08-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: local services search engine management system project

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

Am I affected?

Timeline

2021-08-19 14:39 UTCPublished CVE record published
2026-06-17 03:45 UTCUpdated Record last modified

local services search engine management system project local services search engine management system 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 local-services-search-engine-management-system || rpm -q local-services-search-engine-management-system || local-services-search-engine-management-system --version

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

apt-cache madison local-services-search-engine-management-system sudo apt install local-services-search-engine-management-system=<VERSION_BEFORE_1.0> sudo apt-mark hold local-services-search-engine-management-system

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

dnf --showduplicates list local-services-search-engine-management-system sudo dnf downgrade local-services-search-engine-management-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add local-services-search-engine-management-system

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-2021-28000?

local services search engine management system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-28000 being exploited?

CVE-2021-28000 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-2021-28000 affect?

CVE-2021-28000 affects local services search engine management system. Severity is medium (CVSS 4.8). A persistent cross-site scripting vulnerability was discovered in Local Services Search Engine Management System Project 1.0 which allows remote attackers to execute arbitrary code via crafted payloads entered into the Name and Address fiel

How urgent is CVE-2021-28000?

Priority 37/100. Public exploit reference

Related CVEs

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CVE-2025-2386 HIGH 7.3 DOWNGRADE A vulnerability was found in PHPGurukul Local Services Search Engine Management System 1.0 and classified as c
CVE-2021-3278 CRITICAL 9.8 DOWNGRADE Local Service Search Engine Management System 1.0 has a vulnerability through authentication bypass using SQL

References

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