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Fencer Intel
medium 5.4

CVE-2025-66421 json

Tryton sao allows XSS because it does not escape completion values

published 11mo ago modified last mo. also GHSA-6qj9-2g9m-29x9 , EUVD-2025-199920

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 7%
public exploits
0
none known

Summary

Tryton sao (aka tryton-sao) before 7.6.11 allows XSS because it does not escape completion values. This is fixed in 7.6.11, 7.4.21, 7.0.40, and 6.0.69.

Patch / fix

  • npm tryton-sao 6.0.69, 7.0.40, 7.4.21, 7.6.11
  • Tryton sao 6.0.69, 7.0.40, 7.4.21, 7.6.11
  • tryton-sao Debian 12 6.0.28+ds1-2+deb12u2
  • tryton-sao Debian 13 7.0.28+ds1-1+deb13u2
  • tryton-sao Debian 14 7.0.40+ds1-1

debian advisories DEBIAN-CVE-2025-66421

Is CVE-2025-66421 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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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
11mo ago

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
GitHub 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
npm tryton-sao
>=7.5.0, <7.6.11
>=7.1.0, <7.4.21
>=7.0.0, <7.0.40
<6.0.69
7.6.11
7.4.21
7.0.40
6.0.69

Affected products

  • Tryton sao

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.