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CVE-2015-2271

14
FAUCET Score

CVE-2015-2271 describes an access restriction bypass vulnerability in Moodle versions through 2.5.9, 2.6.x before 2.6.9, 2.7.x before 2.7.6, and 2.8.x before 2.8.4. Authenticated users can exploit this by using the "Flag as inappropriate" feature without the necessary moodle/tag:flag capability, allowing them to bypass intended access controls. This vulnerability has a CVSS score of 4.0, indicating a medium severity with low attack complexity, requiring authentication, and primarily impacting integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.5.9CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
2.5.0CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:2.5.0:*:*:*:*:*:*:*
2.5.1CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:2.5.1:*:*:*:*:*:*:*
2.5.2CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:2.5.2:*:*:*:*:*:*:*
2.5.3CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:2.5.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.0MEDIUM

AV:N/AC:L/Au:S/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
8.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.71%
Probability of exploitation in next 30 days
EPSS Percentile
75.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0171 is in the 88th percentile among its peer group of 21,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (3)

composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 2.6.9
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 2.7.6
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 2.8.4

Vendor Advisories (1)

composerGHSA-v3wp-35g3-m9mmmedium

Moodle does not consider the moodle/tag:flag capability

May 13, 2022

References

git.moodle.org / gw
openwall.com / lists/oss-security/2015/03/16/1
moodle.org / mod/forum/discuss.php
Vendor Advisory