CVE-2026-111687
CRITICAL
CVSS 9.8
Published: 2026-10-16
Modified: 2026-10-16
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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.
Quick Facts
| CVE ID | CVE-2026-111687 |
| CVSS Score | 9.8 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published | 2026-10-16 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://github.com/rachelos/we-mp-rss/blob/v1.5.3/apis/rss.p…
- https://github.com/rachelos/we-mp-rss/blob/v1.5.3/core/lax/t…
- https://hackmd.io/@hieuPenguinnn/werss-rss-template-unauth-s…
- https://www.vulncheck.com/advisories/werss-we-mp-rss-through…
- https://hackmd.io/@hieuPenguinnn/werss-rss-template-unauth-s…