CVE-2018-15876: An issue was discovered in the ajax-bootmodal-login plugin 1.4.3 for WordPress

Routine

MEDIUM 5.3REMOTEDOWNGRADE

CVE-2018-15876 is a medium-severity flaw (CVSS 5.3) affecting ajax bootmodal login. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in the ajax-bootmodal-login plugin 1.4.3 for WordPress. The register form, login form, and password-recovery form require solving a CAPTCHA to perform actions. However, this is required only once per user session, and therefore one could send as many requests as one wished by automation.

Why this priority

Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 39%)
CISA exploited list	No
Weakness	CWE-20
Published	2018-08-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ajax bootmodal login project

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

Am I affected?

Timeline

2018-08-26 07:29 UTCPublished CVE record published
2026-06-17 01:43 UTCUpdated Record last modified

ajax bootmodal login project ajax bootmodal login DOWNGRADE

Affected: 1.4.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.4.3

1. Check installed version

apt-cache policy ajax-bootmodal-login || rpm -q ajax-bootmodal-login || ajax-bootmodal-login --version

2. No fixed release: DOWNGRADE to a release before 1.4.3 (Debian / Ubuntu)

apt-cache madison ajax-bootmodal-login sudo apt install ajax-bootmodal-login=<VERSION_BEFORE_1.4.3> sudo apt-mark hold ajax-bootmodal-login

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

dnf --showduplicates list ajax-bootmodal-login sudo dnf downgrade ajax-bootmodal-login-<VERSION_BEFORE_1.4.3> sudo dnf versionlock add ajax-bootmodal-login

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-2018-15876?

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

Is CVE-2018-15876 being exploited?

CVE-2018-15876 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-2018-15876 affect?

CVE-2018-15876 affects ajax bootmodal login. Severity is medium (CVSS 5.3). An issue was discovered in the ajax-bootmodal-login plugin 1.4.3 for WordPress. The register form, login form, and password-recovery form require solving a CAPTCHA to perform actions. However, this is required only once per user session, an

How urgent is CVE-2018-15876?

Priority 39/100. Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities

References

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