CVE-2020-5574 Cross-site scripting in Movable Type
Remote attackers can inject arbitrary HTML attributes in Movable Type, potentially leading to script execution or security bypasses.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-5574?
CVE-2020-5574 is a medium-severity cross-site scripting vulnerability in Six Apart Ltd. Movable Type, published on 14 May 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
HTML attribute value injection vulnerability in Movable Type series (Movable Type 7 r.4606 (7.2.1) and earlier (Movable Type 7), Movable Type Advanced 7 r.4606 (7.2.1) and earlier (Movable Type Advanced 7), Movable Type for AWS 7 r.4606 (7.2.1) and earlier (Movable Type for AWS 7), Movable Type 6.5.3 and earlier (Movable Type 6.5), Movable Type Advanced 6.5.3 and earlier (Movable Type Advanced 6.5), Movable Type 6.3.11 and earlier (Movable Type 6.3), Movable Type Advanced 6.3.11 and earlier (Movable Type 6.3), Movable Type Premium 1.29 and earlier, and Movable Type Premium Advanced 1.29 and earlier) allows remote attackers to inject arbitrary HTML attribute value via unspecified vectors.
Weakness: CWE-74
Which versions are affected by CVE-2020-5574?
It affects 1 product.
Products include Sixapart Movable Type.
How do I fix CVE-2020-5574?
No fix has been published for CVE-2020-5574 yet. Limit exposure of the affected software until one is available.
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-2020-5574 being exploited?
There is no known exploitation of CVE-2020-5574 in the wild and no public exploit code.
Other vulnerabilities in Six Apart Ltd. Movable Type
Sources
Also known as GHSA-34jf-34wf-852g.