CVE-2026-111687
CVE-2026-111687 · WeRSS (we-mp-rss) through 1.5.3 RCE via template Parameter in /rss Endpoint
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 9.3 · Critical · EPSS 1.0%
- Published
- Updated
Affected products and versions
we-mp-rss
- Versions
- ≥ 0, ≤ 1.5.3: Affected (custom)
No fix published
Original sources
- https://hackmd.io/@hieuPenguinnn/werss-rss-template-unauth-ssti-rce
- https://github.com/rachelos/we-mp-rss/blob/v1.5.3/core/lax/template_parser.py#L1150-L1166
- https://github.com/rachelos/we-mp-rss/blob/v1.5.3/apis/rss.py#L185-L198
- https://www.vulncheck.com/advisories/werss-we-mp-rss-through-1.5.3-rce-via-template-parameter-in-rss-endpoint
- https://nvd.nist.gov/vuln/detail/CVE-2026-111687