CVE-2018-19509: wg7.php in Webgalamb 7.0 makes opportunistic calls to htmlspecialchars() instead of using a templating engine

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MEDIUM 6.1DOWNGRADE

CVE-2018-19509 is a medium-severity flaw (CVSS 6.1) affecting webgalamb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

wg7.php in Webgalamb 7.0 makes opportunistic calls to htmlspecialchars() instead of using a templating engine with proper contextual encoding. Because it is possible to insert arbitrary strings into the database, any JavaScript could be executed by the administrator, leading to XSS.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.1% (top 36%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-03-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ens

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

Am I affected?

Timeline

2019-03-21 16:00 UTCPublished CVE record published
2026-06-17 01:49 UTCUpdated Record last modified

ens webgalamb DOWNGRADE

Affected: 7.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 7.0 (Debian / Ubuntu)

apt-cache madison webgalamb sudo apt install webgalamb=<VERSION_BEFORE_7.0> sudo apt-mark hold webgalamb

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

dnf --showduplicates list webgalamb sudo dnf downgrade webgalamb-<VERSION_BEFORE_7.0> sudo dnf versionlock add webgalamb

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-2018-19509?

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

Is CVE-2018-19509 being exploited?

CVE-2018-19509 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-2018-19509 affect?

CVE-2018-19509 affects webgalamb. Severity is medium (CVSS 6.1). wg7.php in Webgalamb 7.0 makes opportunistic calls to htmlspecialchars() instead of using a templating engine with proper contextual encoding. Because it is possible to insert arbitrary strings into the database, any JavaScript could be exe

How urgent is CVE-2018-19509?

Priority 42/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2018-19515 CRITICAL 9.8 UPGRADE In Webgalamb through 7.0, system/ajax.php functionality is supposed to be available only to the administrator
CVE-2018-19514 CRITICAL 9.8 UPGRADE In Webgalamb through 7.0, an arbitrary code execution vulnerability could be exploited remotely without authen
CVE-2018-19513 HIGH 7.5 UPGRADE In Webgalamb through 7.0, log files are exposed to the internet with predictable files/logs/sql_error_log/YYYY
CVE-2018-19512 HIGH 7.2 UPGRADE In Webgalamb through 7.0, a system/ajax.php "wgmfile restore" directory traversal vulnerability could lead to
CVE-2018-19511 MEDIUM 6.5 DOWNGRADE wg7.php in Webgalamb 7.0 lacks security measures to prevent CSRF attacks, as demonstrated by wg7.php?options=1

References

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