CVE-2021-31555
HIGHCVSS 7.5/10EPSS 0.80%
Last modified
CVE-2021-31555 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.80% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mediawiki | Mediawiki | <= 1.35.2 |
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
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-31555?
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.
How severe is CVE-2021-31555?
CVE-2021-31555 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.80% probability of exploitation in the next 30 days.
How do I fix CVE-2021-31555?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-31555?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST