CVE-2019-19806: _account_forgot_password.ajax.php in MFScripts YetiShare 3.5.2 through 4.5.3 displays a message indicating whe

Routine

MEDIUM 5.3REMOTEUPGRADE

CVE-2019-19806 is a medium-severity flaw (CVSS 5.3) affecting yetishare. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

_account_forgot_password.ajax.php in MFScripts YetiShare 3.5.2 through 4.5.3 displays a message indicating whether an email address is configured for the account name provided. This can be used by an attacker to enumerate accounts by guessing email addresses.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-209
Published	2019-12-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mfscripts

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

Am I affected?

Timeline

2019-12-30 18:15 UTCPublished CVE record published
2026-06-17 02:27 UTCUpdated Record last modified

mfscripts yetishare UPGRADE

Affected: >= 3.5.2 and <= 4.5.3

Fixed in: newer than 4.5.3

Safe to downgrade to: a release before 3.5.2

1. Check installed version

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

2. UPGRADE to newer than 4.5.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade yetishare

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade yetishare

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 3.5.2 (Debian / Ubuntu)

apt-cache madison yetishare sudo apt install yetishare=<VERSION_BEFORE_3.5.2> sudo apt-mark hold yetishare

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list yetishare sudo dnf downgrade yetishare-<VERSION_BEFORE_3.5.2> sudo dnf versionlock add yetishare

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-2019-19806?

yetishare: upgrade to newer than 4.5.3. Exact commands for each OS are on this page.

Is CVE-2019-19806 being exploited?

CVE-2019-19806 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-2019-19806 affect?

CVE-2019-19806 affects yetishare. Severity is medium (CVSS 5.3). _account_forgot_password.ajax.php in MFScripts YetiShare 3.5.2 through 4.5.3 displays a message indicating whether an email address is configured for the account name provided. This can be used by an attacker to enumerate accounts by guessi

How urgent is CVE-2019-19806?

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

Software pages

PHP vulnerabilities

Related CVEs

CVE-2019-20062 CRITICAL 9.8 UPGRADE MFScripts YetiShare v3.5.2 through v4.5.4 might allow an attacker to reset a password by using a leaked hash (
CVE-2019-20061 HIGH 7.5 UPGRADE The user-introduction email in MFScripts YetiShare v3.5.2 through v4.5.4 may leak the (system-picked) password
CVE-2019-20060 HIGH 7.5 UPGRADE MFScripts YetiShare v3.5.2 through v4.5.4 places sensitive information in the Referer header
CVE-2019-20059 HIGH 8.8 UPGRADE payment_manage.ajax.php and various *_manage.ajax.php in MFScripts YetiShare 3.5.2 through 4.5.4 directly inse
CVE-2019-19805 MEDIUM 5.3 UPGRADE _account_forgot_password.ajax.php in MFScripts YetiShare 3.5.2 through 4.5.3 takes a different amount of time

References

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