CVE-2022-42985: The ScratchLogin extension through 1.1 for MediaWiki does not escape verification failure messages, which allo

Q: How do I fix CVE-2022-42985?

scratch login: upgrade to newer than 1.1. Exact commands for each OS are on this page.

Q: Is CVE-2022-42985 being exploited?

CVE-2022-42985 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-2022-42985 affect?

CVE-2022-42985 affects scratch login. Severity is medium (CVSS 4.8). The ScratchLogin extension through 1.1 for MediaWiki does not escape verification failure messages, which allows users with administrator privileges to perform cross-site scripting (XSS).

Q: How urgent is CVE-2022-42985?

Priority 26/100. No elevated risk signals yet.

Routine

MEDIUM 4.8UPGRADE

CVE-2022-42985 is a medium-severity flaw (CVSS 4.8) affecting scratch login. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The ScratchLogin extension through 1.1 for MediaWiki does not escape verification failure messages, which allows users with administrator privileges to perform cross-site scripting (XSS).

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-11-17
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: scratch-wiki

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

Am I affected?

Timeline

2022-11-17 05:15 UTCPublished CVE record published
2026-06-17 05:05 UTCUpdated Record last modified

scratch-wiki scratch login UPGRADE

Affected: <= 1.1

Fixed in: newer than 1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy scratch-login || rpm -q scratch-login || scratch-login --version

2. UPGRADE to newer than 1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade scratch-login

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade scratch-login

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-2022-42985?

scratch login: upgrade to newer than 1.1. Exact commands for each OS are on this page.

Is CVE-2022-42985 being exploited?

CVE-2022-42985 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-2022-42985 affect?

CVE-2022-42985 affects scratch login. Severity is medium (CVSS 4.8). The ScratchLogin extension through 1.1 for MediaWiki does not escape verification failure messages, which allows users with administrator privileges to perform cross-site scripting (XSS).

How urgent is CVE-2022-42985?

Priority 26/100. No elevated risk signals yet.

Related CVEs

CVE-2020-15164 CRITICAL 10.0 UPGRADE in Scratch Login (MediaWiki extension) before version 1.1, any account can be logged into by using the same us

References

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