CVE-2019-9889: In Vanilla before 2.6.4, a flaw exists within the getSingleIndex function of the AddonManager class

Q: How do I fix CVE-2019-9889?

vanilla: upgrade to 2.6.4. Exact commands for each OS are on this page.

Q: Is CVE-2019-9889 being exploited?

CVE-2019-9889 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-9889 affect?

CVE-2019-9889 affects vanilla. Severity is low (CVSS 2.7). In Vanilla before 2.6.4, a flaw exists within the getSingleIndex function of the AddonManager class. The issue results in a require call using a crafted type value, leading to Directory Traversal with File Inclusion. An attacker can leverag

Q: How urgent is CVE-2019-9889?

Priority 35/100. Public exploit reference

Routine

LOW 2.7UPGRADE

CVE-2019-9889 is a low-severity flaw (CVSS 2.7) affecting vanilla. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Vanilla before 2.6.4, a flaw exists within the getSingleIndex function of the AddonManager class. The issue results in a require call using a crafted type value, leading to Directory Traversal with File Inclusion. An attacker can leverage this vulnerability to execute code under the context of the web server.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	2.7 (Low)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-22
Published	2019-03-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: vanillaforums

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 16:01 UTCPublished CVE record published
2026-06-17 02:44 UTCUpdated Record last modified

vanillaforums vanilla UPGRADE

Affected: < 2.6.4

Fixed in: 2.6.4

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.6.4 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade vanilla

Note

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

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-2019-9889?

vanilla: upgrade to 2.6.4. Exact commands for each OS are on this page.

Is CVE-2019-9889 being exploited?

CVE-2019-9889 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-2019-9889 affect?

CVE-2019-9889 affects vanilla. Severity is low (CVSS 2.7). In Vanilla before 2.6.4, a flaw exists within the getSingleIndex function of the AddonManager class. The issue results in a require call using a crafted type value, leading to Directory Traversal with File Inclusion. An attacker can leverag

How urgent is CVE-2019-9889?

Priority 35/100. Public exploit reference

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CVE-2018-19499 HIGH 7.2 UPGRADE Vanilla before 2.5.5 and 2.6.x before 2.6.2 allows Remote Code Execution because authenticated administrators
CVE-2018-18903 CRITICAL 9.8 UPGRADE Vanilla 2.6.x before 2.6.4 allows remote code execution.
CVE-2018-17571 MEDIUM 6.1 UPGRADE Vanilla before 2.6.1 allows XSS via the email field of a profile.
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References

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