CVE-2021-3278: Local Service Search Engine Management System 1.0 has a vulnerability through authentication bypass using SQL

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2021-3278 is a critical-severity flaw (CVSS 9.8) 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.

Local Service Search Engine Management System 1.0 has a vulnerability through authentication bypass using SQL injection . Using this vulnerability, an attacker can bypass the login page.

Why this priority

Critical severity
EPSS top 2%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	25.3% (top 2%)
CISA exploited list	No
Weakness	CWE-89
Published	2021-01-26
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

2021-01-26 18:16 UTCPublished CVE record published
2026-06-17 04:04 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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Local Service Search Engine Management System 1.0 - SQLi Authentication Bypass

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-2021-3278?

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

Is CVE-2021-3278 being exploited?

CVE-2021-3278 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-2021-3278 affect?

CVE-2021-3278 affects local services search engine management system. Severity is critical (CVSS 9.8). Local Service Search Engine Management System 1.0 has a vulnerability through authentication bypass using SQL injection . Using this vulnerability, an attacker can bypass the login page.

How urgent is CVE-2021-3278?

Priority 69/100. Critical severity; EPSS top 2%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-8179 HIGH 7.3 DOWNGRADE A vulnerability classified as critical was found in PHPGurukul Local Services Search Engine Management System
CVE-2025-6863 HIGH 7.3 DOWNGRADE A vulnerability classified as critical was found in PHPGurukul Local Services Search Engine Management System
CVE-2025-5759 HIGH 7.3 DOWNGRADE A vulnerability classified as critical was found in PHPGurukul Local Services Search Engine Management System
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-2021-28000 MEDIUM 4.8 DOWNGRADE A persistent cross-site scripting vulnerability was discovered in Local Services Search Engine Management Syst

References

← Back to latest CVEs