critical9.8
CVE-2026-111687
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 …
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| WeRSS (We-Mp-Rss) | through 1.5.3 |
Versions were read from the advisory text. No structured product data has been published for this record yet.
Weakness classification
References
- NVD record
- CVE.org record
- https://github.com/rachelos/we-mp-rss/blob/v1.5.3/apis/rss.py#L185-L198
- https://github.com/rachelos/we-mp-rss/blob/v1.5.3/core/lax/template_parser.py#L1150-L1166
- https://hackmd.io/@hieuPenguinnn/werss-rss-template-unauth-ssti-rce
- https://www.vulncheck.com/advisories/werss-we-mp-rss-through-1.5.3-rce-via-template-parameter-in-rss-endpoint