REDCap 10.3.4 contains a XSS vulnerability in the ToDoList function with parameter sort.

published 2021-01-12 5y ago modified 2026-06-17 4mo ago also EUVD-2020-19251

cvss: 6.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits: 0; none known

REDCap 10.3.4 contains a XSS vulnerability in the ToDoList function with parameter sort. The information submitted by the user is immediately returned in the response and not escaped leading to the reflected XSS vulnerability. Attackers can exploit vulnerabilities to steal login session information or borrow user rights to perform unauthorized acts.

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Exploit prediction

1.19% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

github.com https://github.com/vuongdq54/RedCap referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /vuongdq54/RedCap
exploit, third-party-advisory
evms.edu /research/resources_services/redcap/redcap_change_log/
release-notes, vendor-advisory
project-redcap.org /
product, vendor-advisory

Sources

CVE List CVE-2020-26713
NVD CVE-2020-26713

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