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CVE-2023-23611

19
FAUCET Score

CVE-2023-23611 is a Missing Authorization vulnerability affecting Open edX xblock_lti_consumer versions 7.0.0 through 7.2.1. Malicious LTI tools can exploit this by submitting arbitrary resource_link_id values, allowing them to post grades for any LTI XBlock on the platform. Rated Medium (CVSS 5.4), the vulnerability has a low attack complexity and requires low privileges, leading to a loss of integrity for LTI XBlock grades. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 7.0.0, < 7.2.2CPE matchmatch criteria
cpe:2.3:a:openedx:xblock-lti-consumer:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
31.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 40th percentile among its peer group of 21,977 CVEs.

Social Chatter

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 (1)

pippatch availablevia ghsa
Product: lti-consumer-xblockFixed in: 7.2.2

Vendor Advisories (1)

pipGHSA-7j9p-67mm-5g87low

LTI 1.3 Grade Pass Back Implementation has Missing Authorization Vulnerability

Aug 30, 2024

References

github.com / openedx/xblock-lti-consumer/security/advisories/GHSA-7j9p-67mm-5g87
Third Party Advisory