CVE-2026-111687 WeRSS (we-mp-rss) through 1.5.3 RCE via template Parameter in /rss Endpoint
Unauthenticated attackers can execute arbitrary code via the template parameter in the public RSS endpoint of WeRSS.
- 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-2026-111687?
CVE-2026-111687 is a critical code injection vulnerability in rachelos we-mp-rss, published on 16 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
WeRSS (we-mp-rss) through 1.5.3 contains a remote code execution vulnerability that allows unauthenticated attackers to run code via the template parameter of the public GET /rss/{feed_id} endpoint. Attackers can supply a non-built-in ext value and a {{=expression}} template whose object-subclass traversal bypasses the eval denylist to run OS commands as the service account.
Weakness: CWE-95
Which versions are affected by CVE-2026-111687?
How do I fix CVE-2026-111687?
No fix has been published for CVE-2026-111687 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-111687 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111687 exists.
Sources
Also known as GHSA-hp95-p2ww-6rvc.