rachelos WeRSS we-mp-rss tools.py download_export_file path traversal

published 2026-02-09 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-6909

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 28%
public exploits: 0; none known

A flaw has been found in rachelos WeRSS we-mp-rss up to 1.4.8. Impacted is the function download_export_file of the file apis/tools.py. Executing a manipulation of the argument filename can lead to path traversal. The attack can be launched remotely. The exploit has been published and may be used.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 8 mo ago (2026-02-09)

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

notion.so https://www.notion.so/WeRSS-Path-Traversal-Vulnerability-Leads-to-Arbitrary-File-Read-2feea92a3c41804da1f1f5ddbf86e655 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
CNA	3.0	4.3	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
CNA	2.0	4.0	AV:N/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:ND/RC:UR
CNA	4.0	2.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CNA	2.0	4.0	AV:N/AC:L/Au:S/C:P/I:N/A:N

Affected products

rachelos WeRSS we-mp-rss

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

notion.so /WeRSS-Path-Traversal-Vulnerability-Leads-to-Arbitrary-File-Read-2feea92a3c41804da1f1f5ddbf86e655
exploit
vuldb.com /?id.344933
vdb-entry, technical-description
vuldb.com /?ctiid.344933
signature, permissions-required
vuldb.com /?submit.752763
third-party-advisory

Sources

CVE List CVE-2026-2216
NVD CVE-2026-2216

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary