CVE-2019-15150: In the OAuth2 Client extension before 0.4 for MediaWiki, a CSRF vulnerability exists due to the OAuth2 state p

Q: How do I fix CVE-2019-15150?

mw-oauth2client: upgrade to 0.4. Exact commands for each OS are on this page.

Q: Is CVE-2019-15150 being exploited?

CVE-2019-15150 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-2019-15150 affect?

CVE-2019-15150 affects mw-oauth2client. Severity is high (CVSS 8.8). In the OAuth2 Client extension before 0.4 for MediaWiki, a CSRF vulnerability exists due to the OAuth2 state parameter not being checked in the callback function.

This month

HIGH 8.8UPGRADE

CVE-2019-15150 is a high-severity flaw (CVSS 8.8) affecting mw-oauth2client. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In the OAuth2 Client extension before 0.4 for MediaWiki, a CSRF vulnerability exists due to the OAuth2 state parameter not being checked in the callback function.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.2% (top 33%)
CISA exploited list	No
Weakness	CWE-352
Published	2019-08-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: schine.games

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

Am I affected?

Timeline

2019-08-19 04:15 UTCPublished CVE record published
2026-06-17 02:19 UTCUpdated Record last modified

schine.games mw-oauth2client UPGRADE

Affected: < 0.4

Fixed in: 0.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mw-oauth2client || rpm -q mw-oauth2client || mw-oauth2client --version

2. UPGRADE to 0.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mw-oauth2client

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mw-oauth2client

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-2019-15150?

mw-oauth2client: upgrade to 0.4. Exact commands for each OS are on this page.

Is CVE-2019-15150 being exploited?

CVE-2019-15150 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-2019-15150 affect?

CVE-2019-15150 affects mw-oauth2client. Severity is high (CVSS 8.8). In the OAuth2 Client extension before 0.4 for MediaWiki, a CSRF vulnerability exists due to the OAuth2 state parameter not being checked in the callback function.

How urgent is CVE-2019-15150?

Priority 48/100. High severity

References

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