CVE-2021-45904 Cross-site scripting in n/a
An attacker can inject malicious scripts via the Port Forwards Add Name screen in OpenWrt, potentially compromising user sessions.
- 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
- None listed
What is CVE-2021-45904?
CVE-2021-45904 is a medium-severity cross-site scripting vulnerability in Openwrt Openwrt, published on 27 Dec 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
OpenWrt 21.02.1 allows XSS via the Port Forwards Add Name screen.
Weakness: CWE-79
Which versions are affected by CVE-2021-45904?
It affects 1 product.
Products include Openwrt Openwrt.
How do I fix CVE-2021-45904?
No fix has been published for CVE-2021-45904 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-2021-45904 being exploited?
There is no known exploitation of CVE-2021-45904 in the wild and no public exploit code.
Other vulnerabilities in Openwrt Openwrt
- CVE-2020-28951 Use after free in n/a
- CVE-2026-62948 Cross-site scripting in openwrt
- CVE-2026-30871 OpenWrt Project has Stack-based Buffer Overflow in DNS PTR Query
- CVE-2026-30872 OpenWrt Project has a Stack-based Buffer Overflow vulnerability via IPv6 reverse DNS lookup
- CVE-2021-28961 Command injection in n/a
Sources
Also known as GHSA-phgx-qrq5-mx9m.