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CVE-2015-8009

29
FAUCET Score

CVE-2015-8009 describes a critical vulnerability in the MWOAuthDataStore::lookup_token function of MediaWiki's OAuth extension, affecting versions 1.25.x before 1.25.3, 1.24.x before 1.24.4, and before 1.23.11. This flaw allows remote registered Consumers to impersonate other Consumers due to improper signature validation. With a CVSS score of 9.8 (CRITICAL), it presents a high-impact risk with network-based attack vector and low attack complexity, potentially leading to full compromise of confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.23.10CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
1.24.0CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:1.24.0:*:*:*:*:*:*:*
1.24.1CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:1.24.1:*:*:*:*:*:*:*
1.24.2CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:1.24.2:*:*:*:*:*:*:*
1.24.3CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:1.24.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.52%
Probability of exploitation in next 30 days
EPSS Percentile
83.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0252 is in the 73rd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

phabricator.wikimedia.org / T103023
ExploitThird Party Advisory
openwall.com / lists/oss-security/2015/10/29/14
Mailing ListVDB Entry
securitytracker.com / id/1034028