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Fencer Intel
medium 5.4

CVE-2020-25797 json

LimeSurvey 3.21.1 is affected by cross-site scripting (XSS) in the Add Participants Function (First and last name parameters).

published 5y ago modified 4mo ago also BIT-limesurvey-2020-25797 , EUVD-2020-18441

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

LimeSurvey 3.21.1 is affected by cross-site scripting (XSS) in the Add Participants Function (First and last name parameters). When the survey participant being edited, e.g. by an administrative user, the JavaScript code will be executed in the browser.

Patch / fix

  • bitnami limesurvey 3.21.2

Is CVE-2020-25797 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugs.limesurvey.org https://bugs.limesurvey.org/view.php?id=15680 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N
OSV 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
bitnami limesurvey
>=3.21.1, <3.21.2
3.21.2

Classification

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

References

Sources

Fencer Intel 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.