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Fencer Vulns
medium 5.4

CVE-2024-56313 json

A stored cross-site scripting (XSS) vulnerability in the Calendar feature of REDCap through 14.9.6 allows authenticated users to inject mal…

published 2024-12-22 22 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-53103

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits
0
none known

Summary

A stored cross-site scripting (XSS) vulnerability in the Calendar feature of REDCap through 14.9.6 allows authenticated users to inject malicious scripts into the Notes field of a calendar event. When the event is viewed, the crafted payload is executed, potentially enabling the execution of arbitrary web scripts.

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
22 mo ago

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/ping-oui-no/Vulnerability-Research-CVESS/tree/main/RedCap referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

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.