CVE-2017-15946: In the com_tag component 1.7.6 for Joomla!, a SQL injection vulnerability is located in the `tag` parameter to

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2017-15946 is a critical-severity flaw (CVSS 9.8) affecting tag meta. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In the com_tag component 1.7.6 for Joomla!, a SQL injection vulnerability is located in the `tag` parameter to index.php. The request method to execute is GET.

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	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-89
Published	2017-10-28
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: selfget

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

Am I affected?

Timeline

2017-10-28 00:29 UTCPublished CVE record published
2026-06-17 01:08 UTCUpdated Record last modified

selfget tag meta DOWNGRADE

Affected: 1.7.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.7.6

1. Check installed version

apt-cache policy tag-meta || rpm -q tag-meta || tag-meta --version

2. No fixed release: DOWNGRADE to a release before 1.7.6 (Debian / Ubuntu)

apt-cache madison tag-meta sudo apt install tag-meta=<VERSION_BEFORE_1.7.6> sudo apt-mark hold tag-meta

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

dnf --showduplicates list tag-meta sudo dnf downgrade tag-meta-<VERSION_BEFORE_1.7.6> sudo dnf versionlock add tag-meta

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-2017-15946?

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

Is CVE-2017-15946 being exploited?

CVE-2017-15946 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-2017-15946 affect?

CVE-2017-15946 affects tag meta. Severity is critical (CVSS 9.8). In the com_tag component 1.7.6 for Joomla!, a SQL injection vulnerability is located in the `tag` parameter to index.php. The request method to execute is GET.

How urgent is CVE-2017-15946?

Priority 61/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Joomla vulnerabilities · PHP vulnerabilities

References

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