CVE-2026-111687: critical vulnerability in rachelos we-mp-rss
WeRSS (we-mp-rss) through 1.5.3 RCE via template Parameter in /rss Endpoint
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.3epss 1.0%
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
rachelos · we-mp-rssRelated CVEs — rachelos we-mp-rss
In the same product, most dangerous first.
References
https://github.com/rachelos/we-mp-rss/blob/v1.5.3/apis/rss.py#L185-L198https://github.com/rachelos/we-mp-rss/blob/v1.5.3/core/lax/template_parser.py#L1150-L1166https://hackmd.io/@hieuPenguinnn/werss-rss-template-unauth-ssti-rcehttps://www.vulncheck.com/advisories/werss-we-mp-rss-through-1.5.3-rce-via-template-parameter-in-rss-endpoint