VulnerabilityModified
CVE-2021-31555
An issue was discovered in the Oauth extension for MediaWiki through 1.35.2.
HIGH 7.5EPSS 0.80%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.80%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in the Oauth extension for MediaWiki through 1.35.2. It did not validate the oarc_version (aka oauth_registered_consumer.oarc_version) parameter's length.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.80% probability · 54th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- mediawiki/mediawiki
- Source
- cve@mitre.org
References
- https://gerrit.wikimedia.org/r/q/I222c053b4b14ac1ad0f5b3a51565b1b9cd4c139dIssue Tracking, Vendor Advisory
- https://phabricator.wikimedia.org/T277388Third Party Advisory
- https://gerrit.wikimedia.org/r/q/I222c053b4b14ac1ad0f5b3a51565b1b9cd4c139dIssue Tracking, Vendor Advisory
- https://phabricator.wikimedia.org/T277388Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.