CVE-2018-12689: phpLDAPadmin 1.2.2 allows LDAP injection via a crafted server_id parameter in a cmd.php?cmd=login_form request

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2018-12689 is a critical-severity flaw (CVSS 9.8) affecting phpldapadmin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

phpLDAPadmin 1.2.2 allows LDAP injection via a crafted server_id parameter in a cmd.php?cmd=login_form request, or a crafted username and password in the login panel.

Why this priority

Critical severity
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	1.7% (top 23%)
CISA exploited list	No
Published	2018-06-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: phpldapadmin project

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

Am I affected?

Timeline

2018-06-22 20:29 UTCPublished CVE record published
2026-06-17 01:38 UTCUpdated Record last modified

phpldapadmin project phpldapadmin DOWNGRADE

Affected: 1.2.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.2

1. Check installed version

apt-cache policy phpldapadmin || rpm -q phpldapadmin || phpldapadmin --version

2. No fixed release: DOWNGRADE to a release before 1.2.2 (Debian / Ubuntu)

apt-cache madison phpldapadmin sudo apt install phpldapadmin=<VERSION_BEFORE_1.2.2> sudo apt-mark hold phpldapadmin

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

dnf --showduplicates list phpldapadmin sudo dnf downgrade phpldapadmin-<VERSION_BEFORE_1.2.2> sudo dnf versionlock add phpldapadmin

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-2018-12689?

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

Is CVE-2018-12689 being exploited?

CVE-2018-12689 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-2018-12689 affect?

CVE-2018-12689 affects phpldapadmin. Severity is critical (CVSS 9.8). phpLDAPadmin 1.2.2 allows LDAP injection via a crafted server_id parameter in a cmd.php?cmd=login_form request, or a crafted username and password in the login panel.

How urgent is CVE-2018-12689?

Priority 64/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

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References

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