CVE-2023-46858 Cross-site scripting in n/a
Reflected XSS in Moodle grade report allows attackers to execute scripts in teacher sessions, potentially leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-46858?
CVE-2023-46858 is a medium-severity cross-site scripting vulnerability in Moodle Moodle, published on 29 Oct 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Moodle 4.3 allows /grade/report/grader/index.php?searchvalue= reflected XSS when logged in as a teacher. NOTE: the Moodle Security FAQ link states "Some forms of rich content [are] used by teachers to enhance their courses ... admins and teachers can post XSS-capable content, but students can not."
Weakness: CWE-79
Which versions are affected by CVE-2023-46858?
1 open source package ship an affected version, including moodle. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
moodle Bitnami | From 4.3.0 | 4.3.1 |
Products include Moodle Moodle.
How do I fix CVE-2023-46858?
Upgrade moodle to 4.3.1 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2023-46858 being exploited?
There is no known exploitation of CVE-2023-46858 in the wild and no public exploit code.
Other vulnerabilities in Moodle Moodle
- CVE-2006-4935 File upload in n/a
- CVE-2006-4936 Moodle does not properly validate module instance id
- CVE-2004-2233 Unknown "front page vulnerability with Moodle servers" for Moodle before 1.3.2 has unknown impact and attack vectors.
- CVE-2004-2235 Cross-site scripting in n/a
- CVE-2004-2236 Other in n/a
Sources
Also known as BIT-moodle-2023-46858, GHSA-fq3r-xmqf-p5w7.